Configuring Port Adapter Module Interfaces

Note For hardware installation and cabling instructions, refer to the LightStream 1010 ATM Switch PAM Installation Guide. For complete descriptions of the commands mentioned in this chapter, refer to the LightStream 1010 ATM Switch Command Reference publication.

Configuring 155-Mbps SM, MM, and UTP Interfaces

The 155-Mbps Synchronous Optical Network (SONET) Synchronous Transport Signal level 3/Synchronous Digital Hierarchy (STS3c/SDH) Synchronous Transport Module level 1 (STM1) PAM, used for intercampus or wide-area links, has four ports. The ports can be configured as redundant links using the switch routing protocols. The PAM supports SC-type and unshielded twisted-pair (UTP) connectors, while receive and transmit LEDs on each port give quick, visual indications of port status and operation. For detailed network management support, comprehensive statistics gathering and alarm monitoring capabilities are provided, building on the sophisticated manageability mechanisms of SONET/SDH.

Each port on the PAM can be configured to support the following clocking options:

Self-timing based on a Stratum 4 level clock
Loop timing from the received data stream---ideal for public network connections
Timing synchronized to a selected master clock port; required to distribute a single clock across a network

Traffic pacing allows the aggregate output traffic rate on any port to be set to a rate below the line rate. This feature is useful when communicating with a slow receiver or when connected to public networks with peak-rate tariffs.

The plug-and-play mechanisms of the LightStream 1010 ATM switch allow it to come up automatically. All configuration information for PAMs can be saved between hot swaps and switch reboots, while interface types are automatically discovered by the switch, eliminating mandatory manual configuration.

The LightStream 1010 ATM switch supports any combination of PAMs. You can configure your switch with only the number and type of interfaces required, with up to 32 155-Mbps interface ports.

Default 155-Mbps ATM Interface Configur ation Without Autoconfiguration

If Interim Local Management Interface (ILMI) has been disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all 155-Mbps interfaces:

ATM interface type = UNI
UNI version = 3.0
Maximum virtual path identifier (VPI) bits = 8
Maximum virtual channel identifier (VCI) bits = 14
ATM interface side = network
ATM UNI type = private
Framing = sts-3c
Clock source = network-derived
Synchronous Transfer Signal (STS) stream scrambling = on
Cell payload scrambling = on

Manual 155-Mbps Interface Configuration

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	atm uni [side {private \| public} type {network \| user} version {3.0 \| 3.1 \| 4.0}]	Modify the ATM interface side, type, or version.
3	atm maxvpi-bits 0-8	Modify the maximum VPI bits configuration.
4	atm maxvci-bits 0-14	Modify the maximum VCI bits configuration.
5	sonet {stm-1 \| sts-3c}	Modify the framing mode.
6	clock source {free-running \| loop-timed \| network-derived}	Modify the clock source.
7	scambling {cell-payload \| sts-stream}	Modify the scambling mode.

Examples

The following example shows how to change the default ATM interface type to private using the atm uni type private command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)#

The following example shows how to change the clock source using the clock source network-derived command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# clock source network-derived

Refer to the section "Troubleshooting the Interface Configuration," later in this chapter, to confirm your interface configuration.

Configuring 622-Mbps SM and MM Interfaces

The 622-Mbps SONET STS12/SDH STM4 PAM, used for intercampus or wide-area links, has one port. The port on the PAM can be configured as a redundant link using the switch routing protocols. The PAM supports an SC-type connector, and receive and transmit LEDs give quick, visual indications of port status and operation. For detailed network management support, comprehensive statistics gathering and alarm monitoring capabilities are provided, building on the sophisticated manageability mechanisms of SONET/SDH.

Each port on the PAM can be configured to support the following clocking options:

Self-timing based on a Stratum 4 level clock
Loop timing from the received data stream---ideal for public network connections
Timing synchronized to a selected master clock port; required to distribute a single clock across a network

The LightStream 1010 ATM switch supports any combination of PAMs. You can configure your switch with only the number and type of interfaces required, with up to 8 622-Mbps interface ports.

Default 622-Mbps ATM Interface Configuration W ithout Autoconfiguration

If ILMI has been disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all 622-Mbps interfaces:

ATM interface type = UNI
UNI version = 3.0
Maximum VPI bits = 8
Maximum VCI bits = 14
ATM interface side = network
ATM UNI type = private
Framing = sts-12c
Clock source = network-derived
STS stream scrambling = on
Cell payload scrambling = on

Manual 622-Mbps Interface Configuration

To manually change any of the default configuration values, perform the following steps, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Specify an ATM interface and enter interface configuration mode.

2
atm uni [side {private | public} type {network | user} version {3.0 | 3.1 | 4.0}]

Modify the ATM interface side, type, or version.

3
atm maxvpi-bits 0-8

Modify the maximum VPI bits configuration.

4
atm maxvci-bits 0-14

Modify the maximum VCI bits configuration.

5
sonet {stm-4 | sts-12}

Modify the framing mode.

6
clock source {free-running | loop-timed | network-derived}

Modify the clock source.

7
scrambling {cell-payload | sts-stream}

Modify the scrambling mode.

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	atm uni [side {private \| public} type {network \| user} version {3.0 \| 3.1 \| 4.0}]	Modify the ATM interface side, type, or version.
3	atm maxvpi-bits 0-8	Modify the maximum VPI bits configuration.
4	atm maxvci-bits 0-14	Modify the maximum VCI bits configuration.
5	sonet {stm-4 \| sts-12}	Modify the framing mode.
6	clock source {free-running \| loop-timed \| network-derived}	Modify the clock source.
7	scrambling {cell-payload \| sts-stream}	Modify the scrambling mode.

Examples

The following example shows how to change the default ATM interface type to private using the atm uni type private command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# atm uni type private

The following example shows how to change the clock source using the clock source network-derived command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# clock source network-derived

Refer to the section "Troubleshooting the Interface Configuration," later in this chapter, to confirm your interface configuration.

Configuring DS3 and E3 I nterfaces

The 45-Mbps DS3 and the 34-Mbps E3 PAMs are used for wide-area connections, to link multiple campuses, or to connect to public networks. The ports on the PAM can be set up as redundant links, for use by sophisticated switch routing protocols.

Each port on the PAM can be configured to support the following clocking options:

Self-timing based on a Stratum 4 level clock
Loop timing from the received data stream; ideal for public network connections
Timing synchronized to a selected master clock port; required to distribute a single clock across a network.

Note Network clocking configuration options are applicable only to DS3 quad interfaces.

Traffic-pacing allows the aggregate output traffic rate on any port to be set to a rate below the line rate. This feature is useful when communicating with a slow receiver or when connected to public networks with peak-rate tariffs.

The LightStream 1010 ATM switch supports any combination of PAMs. You can configure your switch with only the number and type of interfaces required, with up to 32 DS3 or E3 interface ports.

Default DS3 and E3 ATM Interface Configuration Witho ut Autoconfiguration

If ILMI has been disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all DS3 or E3 interfaces:

ATM interface type = UNI
UNI version = 3.0
Maximum VPI bits = 8
Maximum VCI bits = 14
ATM interface side = network
ATM UNI type = private

The following defaults are assigned to all DS3 PAM interfaces:

Framing = cbit-adm
Cell payload scrambling = off
Clock source = network-derived
LBO = short
Auto-ferf on loss of signal (LOS )= on
Auto-ferf on out of frame (OOF )= on
Auto-ferf on red = on
Auto-ferf on loss of cell delineation (LCD )= on
Auto-ferf on alarm indication signalling (AIS )= on

The following defaults are assigned to all E3 PAM interfaces:

Framing = g.832 adm

Cell payload scrambling = on

Clock source = network-derived

Auto-ferf on LOS = on

Auto-ferf on OOF = on

Auto-ferf on LCD = on (applicable to nonplcp mode only)

Auto-ferf on AIS = on

Manual DS3 and E3 Interface Configuration

To manually change any of the default configuration values, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Specify an ATM interface and enter interface configuration mode.

2
atm uni [side {private | public} type {network | user} version {3.0 | 3.1 | 4.0}]

Modify the ATM interface side, type, or version.

3
atm maxvpi-bits 0-8

Modify the maximum VPI bits configuration.

4
atm maxvci-bits 0-14

Modify the maximum VCI bits configuration.

5
framing {cbitadm | cbitplcp | m23adm | m23plcp}

Modify the framing mode.

6
scrambling {cell-payload | sts-stream}

Modify the scrambling mode.

7
clock source {free-running | loop-timed | network-derived}

Modify the clock source.

8
network-clock-select {1-4_priority} atm card/subcard/port

Configure the network-derived clock.

9
lbo {long | short}

Modify the line build-out.

10
auto-ferf {ais | lcd | los | oof | red}

Modify the auto-ferf configuration.

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	atm uni [side {private \| public} type {network \| user} version {3.0 \| 3.1 \| 4.0}]	Modify the ATM interface side, type, or version.
3	atm maxvpi-bits 0-8	Modify the maximum VPI bits configuration.
4	atm maxvci-bits 0-14	Modify the maximum VCI bits configuration.
5	framing {cbitadm \| cbitplcp \| m23adm \| m23plcp}	Modify the framing mode.
6	scrambling {cell-payload \| sts-stream}	Modify the scrambling mode.
7	clock source {free-running \| loop-timed \| network-derived}	Modify the clock source.
8	network-clock-select {1-4_priority} atm card/subcard/port	Configure the network-derived clock.
9	lbo {long \| short}	Modify the line build-out.
10	auto-ferf {ais \| lcd \| los \| oof \| red}	Modify the auto-ferf configuration.

Examples

The following example shows how to change the default ATM interface type to private using the atm uni type private command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# atm uni type private

The following example shows how to change the clock source using the clock source network-derived command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# clock source network-derived

Refer to the section "Troubleshooting the Interface Configuration," later in this chapter, to confirm your interface configuration.

Configuring T1/E1 Trunk Interfaces

The T1 and E1 trunk PAM, used for intercampus or wide-area links, has four ports that can be configured as redundant links using the switch routing protocols. The PAM supports SC-type and BNC connectors while receive and transmit LEDs on each port give quick, visual indications of port status and operation. For detailed network management support, comprehensive statistics gathering and alarm monitoring capabilities are provided, building on the sophisticated manageability mechanisms of SONET/SDH.

Each port on the PAM can be configured to support the following clocking options:

Self-timing based on a Stratum 4 level clock
Loop timing from the received data stream---ideal for public network connections
Timing synchronized to a selected master clock port, required in order to distribute a single clock across a network

Traffic-pacing allows the aggregate output traffic rate on any port to be set to a rate below the line rates. This feature is useful when communicating with a slow receiver or when connected to public networks with peak-rate tariffs.

The plug-and-play mechanisms of the LightStream 1010 ATM switch allow it to come up automatically. All configuration information for PAMs can be saved using hot swaps and switch reboots, while interface types are automatically discovered by the switch, eliminating mandatory manual configuration.

The LightStream 1010 ATM switch supports any combination of PAMs. You can configure your switch with only the number and type of interfaces required, with up to 32 T1 or E1 interface ports.

The T1 and E1 PAMs provide connectivity to a WAN through T1 or E1 trunk lines.

Default T1 and E1 ATM Interface Configuration Wi thout Autoconfiguration

If ILMI is disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all T1 and E1 interfaces:

ATM interface type = UNI
UNI version = 3.0
Maximum VPI bits = 8
Maximum VCI bits = 14
ATM interface side = network
ATM UNI type = private

The following PAM types have specific defaults assigned:

T1 PAM:

Framing = ESF
Line coding = B8ZS
Cell payload scrambling = off
Clock source = network-derived
LBO = 0 to 110 feet
Auto-ferf on LOS = on
Auto-ferf on OOF = on
Auto-ferf on red = on
Auto-ferf on LCD = on
Auto-ferf on AIS = on

E1 PAM:

Framing = g.832 adm

Line coding = HDB3

Cell payload scrambling = off

Clock source = network-derived

Auto-ferf on LOS = on

Auto-ferf on out of frame OOF = on

Auto-ferf on red = on

Auto-ferf on LCD = on

Auto-ferf on AIS = on

Manual T1 and E1 Interface Configuration

To manually change any of the default configuration values, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Specify an ATM interface and enter interface configuration mode.

2
atm uni [side {private | public} type {network | user} version {3.0 | 3.1 | 4.0}]

Modify the ATM interface side, type, or version.

3
atm maxvpi-bits 0-8

Modify the maximum VPI bits configuration.

4
atm maxvci-bits 0-14

Modify the maximum VCI bits configuration.

5
framing {esfadm | esfplcp | sfadm | sfplcp}

framing {crc4adm | crc4plcp | pcm30adm pcm30plcp}

Modify T1 the framing mode.

Modify E1 the framing mode.

6
linecode {ami | b8zs}

linecode {ami | hdb3}

Modify the T1 line coding.

Modify the E1 line coding.

7
scrambling {cell-payload | sts-stream}

Modify the scrambling mode.

8
clock source {free-running | loop-timed | network-derived}

Modify the clock source.

9
network-clock-select {1-4_priority} atm card/subcard/port

Configure the network-derived clock.

10
lbo {0_110 | 110_220 | 220_330 | 330_440 | 440_550 | 550_600 | gt_600}

Modify the line build-out.

11
auto-ferf {ais | lcd | los | oof | red}

Modify the auto-ferf configuration.

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	atm uni [side {private \| public} type {network \| user} version {3.0 \| 3.1 \| 4.0}]	Modify the ATM interface side, type, or version.
3	atm maxvpi-bits 0-8	Modify the maximum VPI bits configuration.
4	atm maxvci-bits 0-14	Modify the maximum VCI bits configuration.
5	framing {esfadm \| esfplcp \| sfadm \| sfplcp} framing {crc4adm \| crc4plcp \| pcm30adm pcm30plcp}	Modify T1 the framing mode. Modify E1 the framing mode.
6	linecode {ami \| b8zs} linecode {ami \| hdb3}	Modify the T1 line coding. Modify the E1 line coding.
7	scrambling {cell-payload \| sts-stream}	Modify the scrambling mode.
8	clock source {free-running \| loop-timed \| network-derived}	Modify the clock source.
9	network-clock-select {1-4_priority} atm card/subcard/port	Configure the network-derived clock.
10	lbo {0_110 \| 110_220 \| 220_330 \| 330_440 \| 440_550 \| 550_600 \| gt_600}	Modify the line build-out.
11	auto-ferf {ais \| lcd \| los \| oof \| red}	Modify the auto-ferf configuration.

Examples

The following example shows how to change the default ATM interface type to private using the atm uni type private command:

Switch# config term
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# atm uni type private

The following example shows how to change the clock source using the clock source network-derived command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface atm 0/0/0
Switch(config-if)# clock source network-derived

Refer to the section "Troubleshooting the Interface Configuration," later in this chapter, to confirm your interface configuration.

Configuring CES/T1 and E1 Interfaces

You can use the circuit emulation service (CES) T1 and E1 PAMs for links that require constant bit rate (CBR) services, such as interconnecting Private Branch Exchanges (PBXs), time-division multiplexers, and video conference equipment over campus, public, or private networks. You can configure the four ports on the PAM as redundant links using the switch's routing protocols. The T1 PAMs support UTP connectors and the E1 PAMs support either UTP, shielded twisted-pair (STP), or 75-ohm BNC connectors. Status and carrier-detect LEDs on each port give quick, visual indications of port status and operation. For detailed network management support, comprehensive statistics gathering and alarm monitoring capabilities are provided.

Each port on the PAM can be configured to support the following clocking options:

Self-timing based on a Stratum 4 level clock
Loop timing from the received data stream---ideal for public network connections
Timing synchronized to a selected master clock port; required to distribute a single clock across a network

The plug-and-play mechanisms of the LightStream 1010 ATM switch allow it to come up automatically. All configuration information for PAMs can be saved between hot swaps and switch reboots, while the switch automatically discovers the interface types, eliminating mandatory manual configuration.

The LightStream 1010 ATM switch supports any combination of PAMs. You can configure your switch with only the number and type of interfaces required, using up to 32 CES T1 or CES E1 interface ports.

The CES T1 or CES E1 PAM provides the following ATM connections:

Interconnecting PBXs
Time-division multiplexer connections
Video conference connections

Functionality Supported by CES Modules

The functionality supported by a CES module includes the following:

Circuit Emulation Services Interworking Function (CES-IWF), which enables communication between CBR and ATM UNI interfaces
T1/E1 CES unstructured services
T1/E1 CES structured services

Figure 19-1 shows how the CES modules might be used in a LightStream 1010 ATM switch network.

Figure 19-1: Circuit Emulation Services Supported by CES Modules

CES-IWF

CES-IWF is based on an ATM Forum standard that allows communication between CBR and ATM User-Network Interface (UNI) interfaces, that is, between non-ATM telephony devices (such as classic PBXs or TDMs) and ATM devices (such as LightStream 1010 ATM switches). For example, a LightStream 1010 ATM switch equipped with a CES module offers a migration path from classic T1/E1 CBR data communications services to emulated CES T1/E1 unstructured (clear channel) services or structured (N x 64) services in an ATM network.

For example, a LightStream 1010 ATM switch equipped with a CES module offers a migration path from classic T1/E1 CBR data communications services to emulated CES T1/E1 unstructured (clear channel) services or structured (N x 64) services in an ATM network.

Figure 19-2 shows the CES-IWF functions in a LightStream 1010 ATM switch network.

Figure 19-2: CES-IWF Functions in a LightStream 1010 ATM switch Network

Framing Formats and Line Coding Options for CES Modules

The CES modules support the framing formats and line coding options shown in Table 19-1.

Module	Framing Options/Description	Line Coding Options
CES T1 PAM	Super Frame (SF) Extended Super Frame (ESF)	ami or b8zs (b8zs is default)
CES E1 PAM (120-ohm)	E1 CRC multiframe (e1_crc_mf_lt). Configure the line type to e1_crc_mf, without CAS enabled. E1 CRC multiframe (e1_crc_mfCAS_lt). Configure the line type to e1_crc_mf, with CAS enabled. E1 (e1_lt). Configure the line type to e1_lt. E1 multiframe (e1_mfCAS_lt). Configure the line type to e1_mf, with CAS enabled.	ami or hdb3 (hdb3 is default)
CES E1 PAM (BNC)	E1 CRC multiframe (e1_crc_mf_lt). Configure the line type to e1_crc_mf, without CAS enabled. E1 CRC multiframe (e1_crc_mfCAS_lt). Configure the line type to e1_crc_mf, with CAS enabled. E1 (e1_lt). Configure the line type to e1_lt. E1 multiframe (e1_mfCAS_lt). Configure the line type to e1_mf with CAS enabled.	ami or hdb3 (hdb3 is default)

Table 19-1: CES Module Framing and Line Coding Options

Module Framing Options/Description Line Coding Options

CES T1 PAM

Super Frame (SF)

Extended Super Frame (ESF)

ami or b8zs (b8zs is default)

CES E1 PAM (120-ohm)

E1 CRC multiframe (e1_crc_mf_lt). Configure the line type to e1_crc_mf, without CAS enabled.

E1 CRC multiframe (e1_crc_mfCAS_lt). Configure the line type to e1_crc_mf, with CAS enabled.

E1 (e1_lt). Configure the line type to e1_lt.

E1 multiframe (e1_mfCAS_lt). Configure the line type to e1_mf, with CAS enabled.

ami or hdb3 (hdb3 is default)

CES E1 PAM (BNC)

E1 CRC multiframe (e1_crc_mf_lt). Configure the line type to e1_crc_mf, without CAS enabled.

E1 CRC multiframe (e1_crc_mfCAS_lt). Configure the line type to e1_crc_mf, with CAS enabled.

E1 (e1_lt). Configure the line type to e1_lt.

E1 multiframe (e1_mfCAS_lt). Configure the line type to e1_mf with CAS enabled.

ami or hdb3 (hdb3 is default)

Default CSE T1 and E1 ATM Interface Configuration Wit hout Autoconfiguration

If ILMI is disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all CES T1 and CES E1 interfaces:

ATM interface type = UNI
UNI version = 3.0
Maximum VPI bits = 8
Maximum VCI bits = 14
ATM interface side = network
ATM UNI type = private
Loopback = no loop
Signalling mode = no signalling
Transmit clock source = through timing
Data format = clear channel
Timing = synchronous
LBO = 0 to 110 feet
Cell delay variation = 2000 microseconds
Channel-associated signalling (CAS) = FALSE
Partial fill = 47

The following PAM types have specific defaults assigned:

CES T1 PAM:

Framing = ESF
Line coding = B8ZS
Line state = no alarm

CES E1 PAM:

Line type = E1
Line coding = HDB3
International bits = 0x3
National bits = 0x1f
Multiframe spare bits = 0xb

The following defaults apply for all versions of the CES modules, unless you change them manually using specific CLI commands during module configuration:

CES-IWF AAL1 service unstructured---This default setting automatically establishes unstructured (clear channel) CES services for a CES module.
CES-IWF AAL1 clock source synchronous---This default setting automatically establishes synchronous clocking for all CES-IWF operations.

Manual CES T1 and E1 Interface Configuration

To manually change any of the default configuration values, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Specify an ATM interface and enter interface configuration mode.

2
ces aal1 clock {adaptive | srts | synchronous}

Configure the type of clocking.

3
ces aal1 service {structured | unstructured}

Configure the service type.

4
ces dsx1 clock source {free-running | loop-timed | network-derived}

Configure the DSX-1 clock source.

5
ces dsx1 framing {e1_crc_mfCAS_lt | e1_crc_mf_lt | e1_lt | e1_mfCAS_lt}

Configure the DSX-1 framing type.

6
ces dsx1 lbo {0_110 | 110_220 | 220_330 | 330_440 | 440_550 | 550_660 | 660_above | square_pulse}

Configure the DSX-1 line build-out.

7
ces dsx1 linecode {ami | b8zs}

Configure the DSX-1 line code type.

8
ces dsx1 loopback {line | noloop | payload}

Configure the DSX-1 loopback test method.

9
ces circuit 0 cdv {1-65535 | circuit-name | shutdown}

Configure the circuit cell delay variation.

10
ces pvc 0 dest-address {interface atm card/subcard/port}

Configure the PVC.

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the type of clocking.
3	ces aal1 service {structured \| unstructured}	Configure the service type.
4	ces dsx1 clock source {free-running \| loop-timed \| network-derived}	Configure the DSX-1 clock source.
5	ces dsx1 framing {e1_crc_mfCAS_lt \| e1_crc_mf_lt \| e1_lt \| e1_mfCAS_lt}	Configure the DSX-1 framing type.
6	ces dsx1 lbo {0_110 \| 110_220 \| 220_330 \| 330_440 \| 440_550 \| 550_660 \| 660_above \| square_pulse}	Configure the DSX-1 line build-out.
7	ces dsx1 linecode {ami \| b8zs}	Configure the DSX-1 line code type.
8	ces dsx1 loopback {line \| noloop \| payload}	Configure the DSX-1 loopback test method.
9	ces circuit 0 cdv {1-65535 \| circuit-name \| shutdown}	Configure the circuit cell delay variation.
10	ces pvc 0 dest-address {interface atm card/subcard/port}	Configure the PVC.

Examples

The following example shows how to change the default CBR interface DSX-1 framing mode to super frame using the ces dsx1 framing sf command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface cbr 3/0/0
Switch(config-if)#  ces dsx1 framing sf

The following example shows how to change the default CBR interface DSX-1 line build out from 330 to 440 feet using the ces dsx1 lbo 330_440 command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface cbr 3/0/0
Switch(config-if)# ces dsx1 lbo 330_440

The following example shows how to change the default CBR interface from the DSX-1 linecode method to binary 8 zero suppression using the ces dsx1 linecode b8zs command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface cbr 3/0/0
Switch(config-if)# ces dsx1 linecode b8zs

The following example shows how to change the default CBR interface DSX-1 loopback method to use the payload using the ces dsx1 loopback payload command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface cbr 3/0/0
Switch(config-if)# ces dsx1 loopback payload

The following example shows how to change the default CBR interface circuit zero cell delay variation to 30,000 using the ces circuit 0 cdv 30000 command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface cbr 3/0/0
Switch(config-if)# ces circuit 0 cdv 30000

The following example shows how to change the default CBR interface PVC 0 to ATM interface 0/0/0 using the ces pvc 0 dest-address interface atm 0/0/0 command:

Switch# config term
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)# interface cbr 3/0/0
Switch(config-if)# ces pvc 0 dest-address interface atm 0/0/0

Refer to the section "Troubleshooting the Interface Configuration," later in this chapter, to confirm your interface configuration.

CES Services Configuration Tips

This section provides general information that may be helpful while configuring CES modules.

Guidelines for Creating Soft PVCs for CES Services

As a CES T1/E1 PAM user, you can create either hard private virtual circuits (PVCs) or soft PVCs, depending on your particular CES application requirements. The differences between these two types of CES circuits are described in the following sections:

The following steps must be performed in a prescribed order when you configure soft PVCs for either unstructured or structured CES services:

Step 1 Determine which two ports you want to define as participants in the soft PVC.

Step 2 Decide which of the two ports you want to designate as the destination (or passive) side of the soft PVC.

Note This is an arbitrary decision---you can choose either port as the destination end of the circuit. However, you must decide which port is to function in this capacity and proceed accordingly.

Step 3 Configure the destination (passive) side of the soft PVC.

You must configure the destination end of the soft PVC first, as this end defines an ATM Forum-compliant CES-IWF ATM address for that port.

Step 4 Retrieve the CES-IWF ATM address of the soft PVC's destination end using the show ces address command. The following example shows how to display the CES-IWF ATM address for a CES circuit:

CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20  CBR-PVC-AC
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10  CBR-PVC-CA

You must determine this address, as well as the VPI/VCI values for the circuit (see Step 5), and use these elements as part of the command string when you configure the source (active) end of the soft PVC (see Step 6).

Step 5 Retrieve the VPI/VCI values for the circuit using the show ces circuit command. The following example shows how to display the VPI/VCI values for a CES circuit:

CESwitch# show ces circuit interface cbr 0/1/1 1
Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / OPER_DOWN
Interface CBR0/1/1, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10-13
Channels used by this circuit: 10-13
Cell-Rate: 681, Bit-Rate 256000
cas OFF, cell_header 0x4100 (vci = 1040)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcInactive, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040
Dst: atm addr default vpi 0, vci 0

Step 6 Configure the source (active) end of the soft PVC last, using the information derived from Step 4 and Step 5.

You must configure the source end of the soft PVC last, because that end not only defines the configuration information for the source port, but also requires you to enter the CES-IWF ATM address and VPI/VCI values for the destination port.

Determine Currently Configured CES Interfaces in the LightStream 1010 ATM switch Chassis

Before configuring new interfaces for a CES module, it might be useful to determine which interfaces are already defined for CES modules in your LightStream 1010 ATM switch chassis. Use the show ces status command at the privileged EXEC mode prompt to determine the interfaces previously defined for CES modules:

CESwitch# show ces status
Interface      IF      Admin        Port  Channels in
Name       Status   Status        Type      use    
------------- -------- --------- ----------- -----------
	CBR0/1/0	UP	UP	T1 	1-24
	CBR0/1/1	UP	UP	T1	1-24
	CBR0/1/2	UP	UP	T1	1-24 
	CBR0/1/3	UP	UP	T1	1-24

This command displays key information about the currently configured CBR interfaces in your LightStream 1010 ATM switch chassis. In the show ces status command example, the output shows that the CES T1 module is installed in chassis slot 0, module slot 1, and that all four ports (0 to 3) of the module are configured for service.

Configure T1/E1 Unstructured CES Services

This section provides an overview of unstrctured (clear channel) CES services and describes the procedures you use to configure CES modules for unstructured CES services.

The circuit you set up on a CBR port for unstructured service is always identified as circuit 0, since you can establish only one unstructured circuit on any given CBR port. An unstructured circuit uses the entire bandwidth of a T1/E1 port, as indicated below:

A hard PVC on a T1/E1 port---The entire bandwidth of a T1 port (1.544 Mbps) or an E1 port (2.048 Mbps) is allocated manually when you set up the unstructured circuit and remains dedicated to that port, whether that port is actively transmitting CBR data or not.
A soft PVC on a T1/E1 port---The entire bandwidth of a T1 port (1.544 Mbps) or an E1 port (2.048 Mbps) is also allocated manually when you set up the circuit, but this bandwidth is only used by the unstructured circuit when it is active.

The procedures for configuring CES modules for unstrctured CES services are described in the following subsections:

Overview of Unstructured CES Services

Unstructured CES services in a LightStream 1010 ATM switch network emulate point-to-point connections over T1/E1 leased lines. This service maps the entire bandwidth necessary for a T1/E1 leased line connection across the ATM network, allowing users to interconnect PBXs, TDMs, and video conferencing equipment, as shown in Figure 19-4. Unstructured CES operations do not decode or alter the CBR data in any way.

A CES module provides the following unstructured CES services:

CES T1 PAM---Supports DSX-1 physical interfaces to provide T1 unstructured (clear channel) CBR data transmission services at 1.544 Mbps.

: Using a CES T1 PAM for unstructured CES services simulates a point-to-point T1 leased line across your ATM network.

CES E1 PAM (either 120-ohm or 75-ohm version)---Supports G.703 physical interfaces to provide E1 unstructured (clear channel) CBR data transmission services at 2.048 Mbps.

: Similarly, using a CES T1 PAM for unstructured CES services simulates a point-to-point E1 leased line across your ATM network.

Figure 19-3 shows how T1/E1 unstructured CES services execute with a LightStream 1010 ATM switch equipped with a CES T1/E1 PAM.

Figure 19-3: T/E1 Unstructured CES Services Across Leased Lines

Figure 19-4 provides an example of unstructured CES applications in a LightStream 1010 ATM switch network. During unstructured CES services, user CBR data received from an edge device on one side of the network segment into ATM cells and propagates through the ATM network. After traversing the network, the ATM cells are reassembled into a CBR bit stream that matches the original user data. This CBR data is then passed out of the network to the edge device at the destination endpoint.

Figure 19-4: T1/E1 Unstructured CES Applications in LightStream 1010 ATM switch Network

Configure a Hard PVC with Adaptive Clocking for Unstructured CES Service

A CES module converts CBR traffic into ATM cells for propagation through an ATM network. CBR traffic arriving on a given CES module port must first be segmented into ATM cells. This cell stream is then directed to an outgoing ATM port or CBR port. If the outgoing port is an ATM port on the same LightStream 1010 ATM switch chassis, then the PVC is called a hard PVC.

Note As a general rule when configuring a hard PVC, you must interconnect a CBR port and an ATM port in the same LightStream 1010 ATM switch chassis.

Figure 19-5 displays unstructured CES services configured on a LightStream 1010 ATM switch switch using ATM and CES interface modules to create a hard PVC. The hard PVC also uses adaptive clocking and this CES circuit enables bidirectional, unstructured CBR traffic to flow between these two modules.

Figure 19-5: Hard PVC Configured for Unstructured CES Services

To configure a hard PVC with adaptive clocking for unstructured CES service, perform the following tasks, beginning in global configuration mode.

Step Command Task

1
interface atm card/subcard/port

Select the physical interface to be configured.

2
no shutdown

Enable the CES interface.

3
ces aal1 service unstructured

Configure the CES interface AAL1 service as unstructured.

4
ces aal1 clock {adaptive | srts | synchronous}

Configure the CES interface AAL1 clock mode.

5
ces circuit 0 circuit-name name

Configure the CES interface circuit identifier and circuit name.

6
ces pvc 0 interface ATM card/subcard/port vpi 0-4095 vci 1-16383

Configure the hard PVC to the ATM interface and VPI/VCI.

Step	Command	Task
1	interface atm card/subcard/port	Select the physical interface to be configured.
2	no shutdown	Enable the CES interface.
3	ces aal1 service unstructured	Configure the CES interface AAL1 service as unstructured.
4	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the CES interface AAL1 clock mode.
5	ces circuit 0 circuit-name name	Configure the CES interface circuit identifier and circuit name.
6	ces pvc 0 interface ATM card/subcard/port vpi 0-4095 vci 1-16383	Configure the hard PVC to the ATM interface and VPI/VCI.

Example

The following example shows how to configure the hard PVC with adaptive clocking for unstructured CES service (shown in Figure 19-5):

CESwitch(config)# interface CBR0/1/0 
CESwitch(config-if)# no shutdown
CESwitch(config-if)# ces aal1 service unstructured
CESwitch(config-if)# ces aal1 clock adaptive 
CESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-A 
CESwitch(config-if)# ces pvc 0 interface ATM 0/0/0 vpi 0 vci 100

In order, the commands in this example do the following:

1. Set the chassis to the global configuration mode.

2. Identify interface CBR0/1/0 for configuration.

3. Enable all CES functions on the module.

4. Configure the module for unstructured CES services.

5. Configure the module to use adaptive clocking.

6. Identify the hard PVC as circuit 0 and assign it the logical circuit name CBR-PVC-A.

Note If you do not explicitly specify the circuit name and logical name parameters in the command line, the system automatically assigns a unique default name in the form CBRx/y/z:# for the circuit being configured. For example, the default name for this particular circuit is CBR0/1/0:1. For structured CES services, the circuit number sequence always begins at 1 for each port in a CES module.

7. Identify a particular ATM interface module, port, VPI, and VCI as the destination end of the hard PVC.

Note The VPI/VCI values shown in the example are for demonstration purposes only. Your service provider assigns you a virtual path for your data, but you must decide which VCI number to assign to the circuit.

8. Exit from interface configuration mode.

Verify the Hard PVC with Adaptive Clocking

To show the hard PVC configuration, use the following EXEC commands:

Command Task

show ces address

Show the CES address for the destination end of the circuit.

show ces circuit

Show the hard PVC configuration information.

show ces circuit interface card/subcard/port circuit_id

Show the detailed hard PVC interface configuration information.

Command	Task
show ces address	Show the CES address for the destination end of the circuit.
show ces circuit	Show the hard PVC configuration information.
show ces circuit interface card/subcard/port circuit_id	Show the detailed hard PVC interface configuration information.

Examples

The following example shows how to display the CES-IWF ATM address for the destination end of the circuit shown in Figure 19-5, using the show ces address command:

CESwitch# show ces address
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A

The following example shows how to display the basic information about the hard PVC shown in Figure 19-5, using the show ces circuit command:

CESwitch# show ces circuit
Interface	 Circuit 	Circuit-Type 	X-interface	 X-vpi	 X-vci	 Status	
 CBR0/1/0	 0HardPVC	ATM0/0/0	 0	 100	 UP

The show ces circuit command verifies the source and destination port IDs of the hard PVC and indicates that the circuit is UP, or fully operational.

The following example shows how to display detailed information about the hard PVC shown in Figure 19-5, using the show ces circuit interface command:

CESwitch# show ces circuit interface CBR0/1/0 0
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 0, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_ADAPT
Channel in use on this port: 1-24
Channels used by this circuit: 1-24
Cell-Rate: 4107, Bit-Rate 1544000
cas OFF, cell_header 0x100 (vci = 16)
cdv 2000 usecs, Measured cdv 350 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcAlarm, maxQueueDepth      883, startDequeueDepth      493
Partial Fill:       47, Structured Data Transfer 0
HardPVC       
src: CBR0/1/0 vpi 0, vci 16
Dst: ATM0/0/0 vpi 0, vci 100

The show ces circuit interface command displays all the configuration information relevant to the hard PVC that you set up in the preceding section. Note the following:

The Port-Type field, in the third line of the example, identifies the type of CES module you configured (in this case, a T1 interface).
Any hard PVC that you set up for unstructured CES services always carries the circuit identifier Circuit_id 0 since there is only one unstructured circuit in an unstructured hard PVC.

: In other words, a hard PVC that you set up for unstructured CES services on any CBR port is always labeled circuit 0, since the entire bandwidth of the T1/E1 port is dedicated to that circuit.

Configure a Hard PVC with Synchronous Clocking

This procedure refers to the same port IDs previously used in setting up a hard PVC in the section "Configure a Hard PVC with Adaptive Clocking for Unstructured CES Service" and shown in Figure 19-5. This procedure is used in most CES applications.

To configure a hard PVC with synchronous clocking for unstructured CES service, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Select the physical interface to be configured.

2
ces dsx1 clock source {loop-timed | network-derived}

Configure the CES interface clock source.

3
ces circuit 0 shutdown

Administratively shut down the CES interface circuit.

4
ces aal1 clock {adaptive | srts | synchronous}

Configure the CES interface AAL1 clock mode.

5
no ces circuit 0 shutdown

Reenable the CES interface circuit.

Step	Command	Task
1	interface atm card/subcard/port	Select the physical interface to be configured.
2	ces dsx1 clock source {loop-timed \| network-derived}	Configure the CES interface clock source.
3	ces circuit 0 shutdown	Administratively shut down the CES interface circuit.
4	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the CES interface AAL1 clock mode.
5	no ces circuit 0 shutdown	Reenable the CES interface circuit.

Example

The following example shows how to configure the hard PVC with synchronous clocking for unstructured CES service (see Figure 19-5):

CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces dsx1 clock source network-derived 
CESwitch(config-if)# ces circuit 0 shutdown
CESwitch(config-if)# ces aal1 clock synchronous
CESwitch(config-if)# no ces circuit 0 shutdown

In order, the commands in this example:

1. Set the chassis to the global configuration mode.

2. Identify interface CBR0/1/0 for configuration.

3. Configure interface CBR0/1/0 to use the network-derived clocking signal (PRS) for network clock synchronization services.

Note In the synchronous clocking mode, the primary reference source (PRS) is always derived from the networking environment. You must set the CBR port to use this clocking signal for synchronizing CBR data transport.

4. Temporarily disable all functions relating to circuit 0 on port CBR0/1/0.

5. Configure the synchronous clocking mode for use by port CBR0/1/0.

6. Enable all functions for circuit 0 on the CES module.

7. Exit from interface configuration mode.

Verify the Configured Hard PVC with Synchronous Clocking

To show the hard PVC configuration, use the following EXEC command:

Command Task

show ces circuit interface card/subcard/port circuit_id

Show the detailed hard PVC interface configuration information.

Command	Task
show ces circuit interface card/subcard/port circuit_id	Show the detailed hard PVC interface configuration information.

Examples

The following example displays configuration information for the hard PVC with synchronous clocking (shown in Figure 19-5), using the show ces circuit interface cbr command:

CESwitch# show ces circuit interface cbr 0/1/0 0
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 0, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-24
Channels used by this circuit: 1-24
Cell-Rate: 4107, Bit-Rate 1544000
cas OFF, cell_header 0x100 (vci = 16)
cdv 2000 usecs, Measured cdv 350 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcAlarm, maxQueueDepth      879, startDequeueDepth      491
Partial Fill:       47, Structured Data Transfer 0
HardPVC       
src: CBR0/1/0 vpi 0, vci 16
Dst: ATM0/0/0 vpi 0, vci 100

The output from this command verifies the following configuration information:

The circuit is UP
Synchronous clocking for the circuit named CBR-PVC-A
Source and destination ports for the hard PVC

Configure a Soft PVC with Synchronous Clocking

In a soft PVC, as well as a hard PVC, you configure both ends of the CES circuit. However, a soft PVC typically involves CES modules at opposite edges of an ATM network, so a soft PVC can be set up between any two CES modules anywhere in your network.

For detailed soft PVC requirements, see the section "Guidelines for Creating Soft PVCs for CES Services."

The destination address of a soft PVC can point to either of the following:

A port in the same LightStream 1010 ATM switch chassis
A port in any other CES module in the network

For example, to set up a soft PVC involving a local node and a destination node at the opposite edge of the network, you need to determine the CES-IWF ATM address of the port in the destination node in order to complete soft PVC setup.

To obtain the destination address (dest-address) for an already configured port in a CES module, log into the remote LightStream 1010 ATM switch chassis containing that module. Then use the show ces address command to display all the CES-IWF ATM addresses currently configured for that node. For an example of the show ces address command, see the section "Guidelines for Creating Soft PVCs for CES Services" earlier in this chapter.

For simplicity, the procedure in this section assumes that you are creating a soft PVC between interface modules in the same LightStream 1010 ATM switch chassis.

Figure 19-6 shows a logical representation of the soft PVC used in the following example procedure.

Figure 19-6: Soft PVC Configured for Unstructured CES Services

Configuring a soft PVC for unstructured CES services is a two-phase process:

Phase 1---Configure the Destination (Passive) Side of the Soft PVC

To configure the destination (passive) side of a soft PVC destination port with synchronous clocking, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Select the physical interface to be configured.

2
ces dsx1 clock source {loop-timed | network-derived}

Configure the CES interface clock source.

3
no shutdown

Enable the CES interface.

4
ces aal1 service unstructured

Configure the CES interface AAL1 service as unstructured.

5
ces circuit 0 circuit-name name

Configure the CES interface circuit identifier and circuit name.

6
ces aal1 clock {adaptive | srts | synchronous}

Configure the CES interface AAL1 clock mode.

7
ces circuit 0 circuit-name name

Configure the CES interface circuit identifier and circuit name.

Step	Command	Task
1	interface atm card/subcard/port	Select the physical interface to be configured.
2	ces dsx1 clock source {loop-timed \| network-derived}	Configure the CES interface clock source.
3	no shutdown	Enable the CES interface.
4	ces aal1 service unstructured	Configure the CES interface AAL1 service as unstructured.
5	ces circuit 0 circuit-name name	Configure the CES interface circuit identifier and circuit name.
6	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the CES interface AAL1 clock mode.
7	ces circuit 0 circuit-name name	Configure the CES interface circuit identifier and circuit name.

Example

The following example shows how to configure the destination (passive) side of a soft PVC with synchronous clocking, as shown in Figure 19-6:

CESwitch(config)# interface cbr 0/1/1
CESwitch(config-if)# ces dsx1 clock source network-derived
CESwitch(config-if)# no shutdown
CESwitch(config-if)# ces aal1 service unstructured
CESwitch(config-if)# ces aal1 clock synchronous
CESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-B

In order, the commands in this example:

1. Set the chassis to the global configuration mode.

2. Identify interface CBR0/1/1 for configuration.

3. Configure interface CBR0/1/1 to use the network-derived clocking signal for network clock synchronization services.

Note In the synchronous clocking mode, the PRS is always derived from the networking environment. You must set the CBR port to use this clocking signal for synchronizing CBR data transport.

4. Enable the CES module.

5. Set unstructured CES service for the soft PVC.

6. Set the synchronous clocking mode for the circuit.

7. Identify the soft PVC as circuit 0 and assign it the logical circuit name CBR-PVC-B.

8. Exit from interface configuration mode.

Phase 2---Configure the Source (Active) Side of the Soft PVC

To configure the source (active) side of a soft PVC for structured CES services, perform the following tasks, beginning in privileged EXEC mode:

Step Command Task

1
show ces address

Show the CES address for the destination end of the circuit.

2
configure terminal

At the privileged EXEC prompt, enter configuration mode from the terminal.

3
interface atm card/subcard/port

Select the physical interface to be configured.

4
ces circuit {1-24} shutdown

Disable the CES circuit.

5
ces pvc 0 dest-address remote_atm_address vpi 0-4095 vci 1-16383

Configure the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.

6
no ces circuit {1-24} shutdown

Enable the CES circuit.

Step	Command	Task
1	show ces address	Show the CES address for the destination end of the circuit.
2	configure terminal	At the privileged EXEC prompt, enter configuration mode from the terminal.
3	interface atm card/subcard/port	Select the physical interface to be configured.
4	ces circuit {1-24} shutdown	Disable the CES circuit.
5	ces pvc 0 dest-address remote_atm_address vpi 0-4095 vci 1-16383	Configure the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.
6	no ces circuit {1-24} shutdown	Enable the CES circuit.

Example

The following example shows how to configure the source (active) side of a soft PVC with synchronous clocking, as shown in Figure 19-6:

CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B
 
CESwitch# configure terminal
CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces circuit 0 shutdown
CESwitch(config-if)# ces pvc 0 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 1040
CESwitch(config-if)# no ces circuit 0 shutdown

In order, the commands in this example:

1. Display the CES-IWF ATM address for the circuit CBR-PVC-B; you need this information to assign the destination ATM address.

2. Set the chassis to the global configuration mode.

3. Identify interface CBR0/1/0 for configuration.

4. Administratively shut down circuit 0.

5. Assign the destination ATM address for circuit CBR-PVC B.

6. Reenable the circuit.

7. Exit from interface configuration mode.

Verify the Configured Soft PVC (with Synchronous Clocking)

To show the soft PVC configuration, use the following EXEC commands:

Command Task

show ces circuit

Show the hard PVC configuration information.

show ces circuit interface card/subcard/port circuit_id

Show the detailed hard PVC interface configuration information.

Command	Task
show ces circuit	Show the hard PVC configuration information.
show ces circuit interface card/subcard/port circuit_id	Show the detailed hard PVC interface configuration information.

Examples

The following example shows how to display the soft PVC configured in the previous section (shown in Figure 19-6), using the show ces circuit command:

CESwitch# show ces circuit
Interface	 Circuit	 Circuit-Type	 X-interface	 X-vpi	 X-vci	 Status
 CBR0/1/0	0Active SoftVC	UNKNOWN 	0	0	UP
 CBR0/1/1	0	Passive SoftVC	UNKNOWN 	0	0	UP

The following example shows how to display the detailed circuit information for port 1 (CBR0/1/1), the destination (passive) side of the soft PVC (shown in Figure 19-6), using the show ces circuit interface cbr 0/1/1 0 command:

CESwitch# show ces circuit interface cbr 0/1/1 0
Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / 
Interface CBR0/1/1, Circuit_id 0, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-24
Channels used by this circuit: 1-24
Cell-Rate: 4107, Bit-Rate 1544000
cas OFF, cell_header 0x4100 (vci = 1040)
cdv 2000 usecs, Measured cdv 316 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcAlarm, maxQueueDepth      879, startDequeueDepth      491
Partial Fill:       47, Structured Data Transfer 0
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040
Dst: atm addr default vpi 0, vci 0

The following example shows how to display the detailed circuit information for port 0 (CBR0/1/0), the source (active) side of the soft PVC (shown in Figure 19-6), using the show ces circuit interface cbr 0/1/0 0 command:

CESwitch# show ces circuit interface cbr 0/1/0 0
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 0, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-24
Channels used by this circuit: 1-24
Cell-Rate: 4107, Bit-Rate 1544000
cas OFF, cell_header 0x100 (vci = 16)
cdv 2000 usecs, Measured cdv 316 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcAlarm, maxQueueDepth      879, startDequeueDepth      491
Partial Fill:       47, Structured Data Transfer 0
Active SoftVC 
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10 vpi 0, vci 16
Dst: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040

Delete thePreviously Established PVC

This section describes deleting the hard PVCs that you configured in the section "Configure a Hard PVC with Adaptive Clocking for Unstructured CES Service" (see Figure 19-5).

To delete a previously established PVC, perform the following tasks, beginning in privileged EXEC mode:

Step Command Task

1
show ces circuit

Show the hard PVC configuration information.

2
configure terminal

At the privileged EXEC prompt, enter configuration mode from the terminal.

3
interface atm card/subcard/port

Select the physical interface where the PVC is to be deleted.

4
no ces circuit 0

Disable the CES circuit.

5
exit

Exit interface configuration mode.

6
interface atm card/subcard/port

Select the other physical interface where the PVC is to be deleted.

7
no ces circuit 0

Disable the other end of CES circuit.

Step	Command	Task
1	show ces circuit	Show the hard PVC configuration information.
2	configure terminal	At the privileged EXEC prompt, enter configuration mode from the terminal.
3	interface atm card/subcard/port	Select the physical interface where the PVC is to be deleted.
4	no ces circuit 0	Disable the CES circuit.
5	exit	Exit interface configuration mode.
6	interface atm card/subcard/port	Select the other physical interface where the PVC is to be deleted.
7	no ces circuit 0	Disable the other end of CES circuit.

Example

The following example describes the deletion of the CES service circuits configured in the section "Configure a Hard PVC with Adaptive Clocking for Unstructured CES Service," and shown in Figure 19-6:

CESwitch# show ces circuit               
Interface	Circuit	Circuit-Type 	X-interface 	X-vpi	 X-vci 	Status
CBR1/0	0	HardPVC	ATM0/0	0	100	UP
CBR1/1	0	HardPVC	ATM0/0	0	101	UP
CESwitch# configure terminal
CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# no ces circuit 0
CESwitch(config-if)# exit
CESwitch(config)# interface cbr 0/1/1
CESwitch(config-if)# no ces circuit 0
CESwitch(config-if)# ^Z

In order, the commands in this example:

1. Display the CES circuit configuration.

2. Set the chassis to the global configuration mode.

3. Identify interface CBR0/1/0 for configuration.

4. Delete the previously configured hard PVC on port 0.

5. Exit from interface configuration mode and return to global configuration mode.

6. Identify interface CBR0/1/1 for configuration.

7. Delete the previously configured hard PVC on port 1.

8. Exit from interface mode and return to the privileged EXEC mode prompt.

Verify Deletion of the Previously Established PVC

This procedure enables you to verify the deletion of a previously configured CES circuit. To do this, use the following commands:

Command Task

show ces circuit

Show the hard PVC configuration information.

show ces address

Show the CES address for the destination end of the circuit.

Command	Task
show ces circuit	Show the hard PVC configuration information.
show ces address	Show the CES address for the destination end of the circuit.

Examples

The following example displays the configuration of any CES service circuits:

CESwitch# show ces circuit

The absence of output verifies that all CES circuits are deleted.

The following example displays the configuration of any CES service addresses:

CESwitch# show ces address
 
CES-IWF ATM Address(es):

Configure T1/E1 Structured (N x 64) CES Services

This section provides the procedures you use when configuring CES modules for structured
(N x 64 Kbps) CES services.

An important distinction between structured and unstructured CES services is that structured CES services allow you to allocate T1/E1 bandwidth. Structured CES services only use the T1/E1 bandwidth actually required to support the active structured circuit(s) you configure.

For example, configuring a CES module for structured services allows you to define multiple hard PVCs or soft PVCs for any CES T1 or E1 PAM port.

In both module types, any bits not available for structured CES services are used for framing and out-of-band control.

Note Structured CES services require network clock synchronization. See the section "Configure Network Clock Priorities and Sources" in the chapter "Initially Configuring the LightStream 1010 ATM Switch."

The following procedures are described in this section:

Overview of Structured CES Services

N x 64 refers to a circuit bandwidth (data transmission speed) provided by the aggregation of N x 64-Kbps channels, where N is an integer greater than 1. The 64-Kbps data rate, or the DS0 channel, is the basic building block of the T carrier systems (T1, T2, and T3).

The T1/E1 structured (N x 64) CES services enable a CES module to function in the same way as a classic digital access and crossconnect system (DACS) switch. A CES T1/E1 module provides the following structured services to LightStream 1010 ATM switch users:

CES T1 PAM---Supports DSX-1 physical interfaces to provide T1 channelized data transmission services at a rate of 1.544 Mbps.

: Using a CES T1 PAM, you can map a single digital signal level 0 (DS0) channel or multiple DS0 channels across an ATM network. Each T1 port has up to 24 DS0 time slots per T1 port for allocation to structured CES circuits. Each time slot can transmit CBR data at a rate of 64 Kbps. This represents a total CBR data transmission capacity of 1.536 Mbps (24 x 64 Kbps).

CES E1 PAM (either the 120-ohm or 75-ohm version)---Supports G.703 physical interfaces to provide E1 channelized data transmission services at a rate of 2.048 Mbps.

: Using either the 120- or 75-ohm version of a CES E1 PAM, you can map a single DS0 channel (64 Kbps) or multiple DS0 channels across an ATM network. Each E1 port has up to 31 DS0 available time slots for allocation to structured CES circuits. Each time slot can transmit CBR data at a rate of 64 Kbps. This represents a total CBR data transmission capacity of 1.984 Mbps (31 x 64 Kbps).

Note that if you choose to use optional channel-associated signalling (CAS) with a structured CES circuit, the effective data transfer rate of the circuit is limited to 56 Kbps, since signalling requires 8 Kbps of the circuit's bandwidth. The later section "Channel-Associated Signalling for Structured CES Services Only," later in this chapter, describes the CAS mechanism.

Figure 19-7 illustrates the digital crossconnect and channelized mapping functions supported by a LightStream 1010 ATM switch equipped with a CES module.

Figure 19-7: DACS Functions of CES Modules

Note that single or multiple DS0 time slots can be mapped across the ATM network. Each time slot (or DS0 channel) represents a single N x 64 circuit that can transmit CBR data at a rate of 64 Kbps. Note also that multiple N x 64 circuits can be connected to a single port, using separate time slots.

With T1/E1 structured CES services, network designers can simplify networks by eliminating TDM devices, using LightStream 1010 ATM switch CES modules to allocate T1/E1 bandwidth to PBXs and teleconferencing equipment.

As Figure 19-8 demonstrates, structured services in a CES module can direct T1/E1-formatted CBR data into individual DS0 channels (PVCs) or groups of DS0 channels.

You can send data from these channels to multiple individual output ports on a CES module where the data can be combined with CBR data from other DS0 channels or groups of DS0 channels to form an outgoing T1/E1 bit stream. Thus, you can combine structured CBR data in a highly flexible way for transport across an ATM network.

Figure 19-8, for example, illustrates how 24 available N x 64 DS0 time slots in a CES T1 PAM can be combined in a number of ways to accomplish structured CBR data transport in an ATM network.

Figure 19-8: Time Slots for Structured Services in CES T1 PAM

Note that the ingress (source) DS0 channels at one end of the CES circuit can be mapped into different egress (destination) DS0 channels at the other end of the CES circuit. Mapping DS0 channels requires that the total number of time slots mapped at each end of the CES circuit match.

For example, Figure 19-8 shows DS0 time slots 7, 8, and 24 being bundled to form a single 192-Kbps circuit. At the other end of the connection, you can bundle any of three (available and different) DS0 time slots (such as 18, 19, and 20) to complete the CES circuit.

Note You can group DS0 channels as contiguous or noncontiguous time slots. In Figure 19-8, time slots DS0 7, DS0 8, and DS0 24 are configured to create one structured circuit.

Figure 19-9 illustrates how 31 available N x 64 DS0 time slots can be provided for structured CES services in a CES E1 PAM. The previous rule for DS0 time slot allocation with a CES T1 PAM also applies to the CES E1 PAM: the specific DS0 time slot numbers assigned at one end of the circuit in a CES E1 PAM do not need to map identically to the DS0 time slot numbers at the other end of the CES circuit. Only the aggregate number of DS0 time slots at each end of the circuit must agree.

Figure 19-9: Time Slots for Structured CES Services in CES E1 PAM

Channel-Associated Signalling for Structured CES Services Only

Since the CES T1/E1 PAM emulates CBR services over ATM networks, it must be able to support CAS information introduced into structured CES circuits by PBXs and TDMs. An optional CAS feature for the CES T1/E1 PAM meets this requirement.

CAS information carried in a CBR bit stream can be configured as follows with a CES module:

Case 1---The optional CAS feature is not enabled (the default state).

: In this case, the CES module does not sense the CAS information (carried as ABCD bits in the CBR bit stream) and does not provide support for CAS functions.

Case 2---The optional CAS feature is enabled, but without the optional, Cisco-proprietary on-hook detection feature enabled.

: In addition to packaging incoming CBR data into ATM adaption layer 1 (AAL1) cells in the usual manner for transport through the network, the CES module in the ingress LightStream 1010 ATM switch node (see Figure 19-10) senses the ABCD bit patterns in the incoming data, incorporates these patterns in the ATM cell stream, and propagates the cells to the next node in the network. The ATM cells flow across the network from link to link until reaching the egress LightStream 1010 ATM switch node (see Figure 19-10).
: At the egress node, the CES module strips off the ABCD bit patterns carried by the ATM cells, reassembles the CAS ABCD bits and the user's CBR data into their original form, and passes the frames out of the ATM network on the proper DS0 time slot.
: All these processes occur transparently.

Case 3---Both the optional CAS and on-hook detection features are enabled.

The CAS and on-hook detection features work together to allow an ingress node in an ATM network to monitor on-hook and off-hook conditions for a specified 1 x 64 structured CES circuit. As implied by 1 x 64, the on-hook detection (or bandwidth-release) feature is supported only in a structured CES circuit with a single DS0 time slot at each end of the connection, as shown in Figure 19-10.

For structured CES services, you can invoke CAS with the ability to detect on-hook or off-hook conditions for any given structured CES circuit. The hook state indicates the following:

On-hook---Circuit is idle or unconnected
Off-hook---Circuit is in use and connected

The CAS mechanism allows dynamically allocated T1/E1 bandwidth and is released by hard PVCs or soft PVCs configured for structured CES services.

When you configure CAS, the ingress CES module monitors the ABCD bits in the incoming CBR bit stream to detect on-hook and off-hook conditions in the circuit. In an off-hook condition, all the bandwidth provided for the specified CES circuit is used to transport ATM AAL1 cells across the network from the ingress node to the egress node.

Conversely, in an on-hook condition, the network periodically sends dummy ATM cells from the ingress node to the egress node to maintain the connection. However, these dummy cells consume only a fraction of the circuit's reserved bandwidth, leaving the rest of the bandwidth available for other network traffic. This bandwidth-release feature enables the network to make more efficient use of its resources.

Figure 19-10: CAS in a Structured CES Circuit

When you enable the CAS feature for a CES circuit, it limits the bandwidth of the DS0 channel to 56 Kbps for user data, since CAS functions consume 8 Kbps of channel bandwidth for transporting the ABCD signalling bits. These signalling bits are passed transparently from the ingress node to the egress node as part of the ATM AAL1 cell stream.

In summary, when you enable the optional CAS and on-hook detection features, the following conditions apply:

The PVC provided for the CES circuit always exists.
The bandwidth for the CES circuit is always reserved.
During an on-hook state, most of the bandwidth reserved for the CES circuit is not in use. (Dummy cells are sent from the ingress node to the egress node to maintain the connection.) This bandwidth becomes available for use by other network traffic, such as ABR traffic.
During an off-hook state, all the bandwidth reserved for the CES circuit is dedicated to that circuit.

Configure a Hard PVC for Structured CES Services without CAS

This section describes configuring a hard PVC for structured CES services without CAS.

Figure 19-11 shows that the hard PVC for structured CES services connection is configured with the following parameters:

Four time slots (DS0 channels 1 to 3, and 7) are configured for a circuit named CBR-PVC-A.
CAS is not used.
ATM port 0/0/0 in the LightStream 1010 ATM switch chassis is designated as the destination port of the hard PVC.

Figure 19-11: Hard PVC Configured for Structured CES Services

Configuring a hard PVC for structured CES services without CAS is a two-phase process:

Phase 1---Configure the CES Port for the Structured CES Circuit

To configure the CES port for structured CES services without CAS, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Select the physical interface to be configured.

2
ces dsx1 linecode {ami | b8zs}

Configure the DSX1 line coding.

3
ces dsx1 clock source {loop-timed | network-derived}

Configure the CES interface clock source.

4
ces dsx1 framing {esf | sf}

Configure the CES line type.

5
no shutdown

Configure the CES interface in an UP state.

6
ces aal1 service structured

Configure the CES interface AAL1 service type.

7
ces aal1 clock {adaptive | srts | synchronous}

Configure the CES interface AAL1 clock mode.

Step	Command	Task
1	interface atm card/subcard/port	Select the physical interface to be configured.
2	ces dsx1 linecode {ami \| b8zs}	Configure the DSX1 line coding.
3	ces dsx1 clock source {loop-timed \| network-derived}	Configure the CES interface clock source.
4	ces dsx1 framing {esf \| sf}	Configure the CES line type.
5	no shutdown	Configure the CES interface in an UP state.
6	ces aal1 service structured	Configure the CES interface AAL1 service type.
7	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the CES interface AAL1 clock mode.

Example

The following example shows how to configure the CES port for structured CES services without CAS, as shown in Figure 19-11:

CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces dsx1 clock source network-derived
CESwitch(config-if)# ces dsx1 line-coding b8zs
CESwitch(config-if)# ces dsx1 framing esf
CESwitch(config-if)# no shutdown
CESwitch(config-if)# ces aal1 service structured
CESwitch(config-if)# ces aal1 clock synchronous

In order, the commands in this example:

1. Set the chassis to the global configuration mode.

2. Identify interface CBR0/1/0 for configuration.

3. Configure port CBR0/1/0 to use the network-derived clocking signal for network clock synchronization services.

Note In the synchronous clocking mode, the PRS is always derived from the networking environment. You must set the CBR port to use this clocking signal for synchronizing CBR data transport.

4. Configure the port to support b8zs coding for the DSX-1 physical layer.

5. Configure the port to use the Extended Super Frame (ESF) framing format for the T1/E1 interface.

6. Enable the port.

7. Establish structured CES services for the port.

8. Establish the synchronous clocking mode for the port.

Phase 2---Configure the Hard PVC

To configure the hard PVC for structured CES services without CAS, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Specify an ATM interface and enter interface configuration mode.

2
ces circuit {1-24} timeslots {1-24}

Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.

3
ces circuit {1-24} circuit-name name

Configure the CES interface circuit identifier and circuit name.

4
no ces circuit {1-24} shutdown

Configure the CES circuit in an UP state.

5
ces pvc 0 interface ATM card/subcard/port vpi 0-4095 vci 1-16383

Configure the hard PVC to the ATM interface and VPI/VCI.

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	ces circuit {1-24} timeslots {1-24}	Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.
3	ces circuit {1-24} circuit-name name	Configure the CES interface circuit identifier and circuit name.
4	no ces circuit {1-24} shutdown	Configure the CES circuit in an UP state.
5	ces pvc 0 interface ATM card/subcard/port vpi 0-4095 vci 1-16383	Configure the hard PVC to the ATM interface and VPI/VCI.

Example

The following example shows how to configure a hard PVC for structured CES services without CAS, shown in Figure 19-11:

CESwitch(config-if)# ces circuit 1 timeslots 1-3,7
CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-A
CESwitch(config-if)# no ces circuit 1 shutdown
CESwitch(config-if)# ces pvc 1 interface atm 0/0/0 vpi 0 vci 100

In order, these commands:

1. Specify the four DS0 time slots 1 to 3, and 7 to be used by the hard PVC.

2. Configure the hard PVC with a logical name.

You do not need to specify individual circuit options on a separate command line, as shown in steps 1 and 2. You can specify all the desired circuit options on the same command line, provided that you observe the following rules:

Specify the DS0 time slots as the first option.
Specify each subsequent option in strict alphabetical order.
Separate each command-line option with a space.

3. Enable the hard PVC.

4. Define a particular ATM port as the destination end of the hard PVC.

Note The VPI/VCI values shown in the example (vpi 0 vci 100) are for demonstration purposes only. The service provider you select gives you a virtual path for your data, but you must decide which VCI number to assign to the circuit.

5. Return to the privileged EXEC mode prompt.

Verify the Hard PVC with Structured CES Services without CAS

To show the hard PVC configured with structured services and without CAS, use the following EXEC commands:

Command Task

show ces address

Show the CES address for the destination end of the circuit.

show ces circuit

Show the hard PVC configuration information.

show ces circuit interface card/subcard/port circuit_id

Show the detailed hard PVC interface configuration information.

Command	Task
show ces address	Show the CES address for the destination end of the circuit.
show ces circuit	Show the hard PVC configuration information.
show ces circuit interface card/subcard/port circuit_id	Show the detailed hard PVC interface configuration information.

Examples

The following example shows the 20-byte CES-IWF ATM address assigned to the source end of the hard PVC (shown in Figure 19-11), using the show ces address command:

CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A

This address is implicitly assigned by the CES hardware to identify the source end of the hard PVC.

The following example shows the details of the hard PVC, shown in Figure 19-11, using the show ces circuit command:

CESwitch# show ces circuit 
Interface	Circuit	Circuit-Type	 X-interface 	X-vpi 	X-vci	 Status
 CBR0/1/0	1	HardPVC	ATM0/0/0	0	100	UP

The following example shows the interface details for port CBR0/1/0 (shown in Figure 19-11), using the show ces circuit interface cbr 0/1/0 1 command:

CESwitch# show ces circuit interface cbr 0/1/0 1
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-3,7
Channels used by this circuit: 1-3,7
Cell-Rate: 681, Bit-Rate 256000
cas OFF, cell_header 0x100 (vci = 16)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcLoc, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
HardPVC       
src: CBR0/1/0 vpi 0, vci 16
Dst: ATM0/0/0 vpi 0, vci 100

Configure a Soft PVC for Structured CES Services without CAS

This section describes the procedures used to configure a soft PVC for structured service based on the following assumptions:

Four time slots (DS0 channels) are configured for the soft PVC, as follows:
- For circuit CBR-PVC-A: DS0 channels 1 to 3 and 7 are used on port CBR0/1/0
- For circuit CBR-PVC-B: DS0 channels 10--- to 13 are used on port CBR0/1/1
Channel-associated signalling (CAS) is not used.
The source (active) side of the soft PVC is named CBR-PVC-A.
The destination (passive) side of the soft PVC is named CBR-PVC-B.

Figure 19-12 shows an example of a soft PVC configured for structured CES services (without CAS).

Figure 19-12: Soft PVC Configured for Structured CES Services (without CAS)

Configuring a soft PVC for structured CES services is a two-phase process:

Phase 1---Configure the Destination (Passive) Side of a Soft PVC

To configure a destination (passive) side of a soft PVC for structured CES services, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Select the physical interface to be configured.

2
ces dsx1 clock source {loop-timed | network-derived}

Configure the CES interface clock source.

3
ces dsx1 linecode {ami | b8zs}

Configure the DSX1 line coding.

4
ces dsx1 framing {esf | sf}

Configure the CES line type.

5
no shutdown

Configure the CES interface in an UP state.

6
ces aal1 service structured

Configure the CES interface AAL1 service type.

7
ces aal1 clock {adaptive | srts | synchronous}

Configure the CES interface AAL1 clock mode.

Step	Command	Task
1	interface atm card/subcard/port	Select the physical interface to be configured.
2	ces dsx1 clock source {loop-timed \| network-derived}	Configure the CES interface clock source.
3	ces dsx1 linecode {ami \| b8zs}	Configure the DSX1 line coding.
4	ces dsx1 framing {esf \| sf}	Configure the CES line type.
5	no shutdown	Configure the CES interface in an UP state.
6	ces aal1 service structured	Configure the CES interface AAL1 service type.
7	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the CES interface AAL1 clock mode.

Example

The following example shows how to configure the destination (passive) side of a soft PVC for structured CES services without CAS, as shown in Figure 19-12:

CESwitch(config)# interface cbr 0/1/1
CESwitch(config-if)# ces dsx1 clock source network-derived
CESwitch(config-if)# ces dsx1 linecode b8zs
CESwitch(config-if)# ces dsx1 framing esf
CESwitch(config-if)# no shutdown
CESwitch(config-if)# ces aal1 service structured
CESwitch(config-if)# ces aal1 clock synchronous

In order, the commands in this example:

1. Set the chassis to the global configuration mode.

2. Identify interface CBR0/1/1 for configuration.

3. Configure port CBR0/1/1 to use the PRS for network clock synchronization services.

Note In the synchronous clocking mode, the PRS is always derived from the networking environment. You must set the CBR port to use this clocking signal for synchronizing CBR data transport.

4. Configure the port to support b8zs coding for the DSX-1 physical layer.

5. Configure the port to use the ESF framing format for the T1/E1 interface.

6. Enable the port.

7. Establish structured CES services for the port.

8. Establish the synchronous clocking mode for the port.

Phase 2---Configure the Source (Active) Soft PVC

To configure the source (active) side of a soft PVC for structured CES services, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface atm card/subcard/port

Select the physical interface to be configured.

2
ces circuit {1-24} timeslots {1-24}

Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.

3
ces circuit {1-24} circuit-name name

Configure the CES interface circuit identifier and circuit name.

4
ces circuit {1-24} shutdown

Disable the CES circuit.

5
^Z

Exit interface configuration mode.

6
show ces address

Show the CES address for the destination end of the circuit.

7
show ces circuit interface card/subcard/port circuit_id

Show the detailed soft PVC interface configuration information.

8
configure terminal

At the privileged EXEC prompt, enter configuration mode from the terminal.

9
interface atm card/subcard/port

Select the physical interface to be configured.

10
ces circuit {1-24} shutdown

Disable the CES circuit.

11
ces pvc 0 interface ATM card/subcard/port vpi 0-4095 vci 1-16383

Configure the soft PVC to the ATM interface and VPI/VCI.

12
no ces circuit {1-24} shutdown

Enable the CES circuit.

Step	Command	Task
1	interface atm card/subcard/port	Select the physical interface to be configured.
2	ces circuit {1-24} timeslots {1-24}	Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.
3	ces circuit {1-24} circuit-name name	Configure the CES interface circuit identifier and circuit name.
4	ces circuit {1-24} shutdown	Disable the CES circuit.
5	^Z	Exit interface configuration mode.
6	show ces address	Show the CES address for the destination end of the circuit.
7	show ces circuit interface card/subcard/port circuit_id	Show the detailed soft PVC interface configuration information.
8	configure terminal	At the privileged EXEC prompt, enter configuration mode from the terminal.
9	interface atm card/subcard/port	Select the physical interface to be configured.
10	ces circuit {1-24} shutdown	Disable the CES circuit.
11	ces pvc 0 interface ATM card/subcard/port vpi 0-4095 vci 1-16383	Configure the soft PVC to the ATM interface and VPI/VCI.
12	no ces circuit {1-24} shutdown	Enable the CES circuit.

Example

The following example shows how to configure the source (active) side of a soft PVC for structured CES services without CAS, as shown in Figure 19-12:

CESwitch(config-if)# ces circuit 1 timeslots 10-13 
CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-B
CESwitch(config-if)# no ces circuit 1 shutdown
CESwitch(config-if)# end
CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B
 
CESwitch# show ces circuit interface cbr 0/1/1 1
Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / OPER_DOWN
Interface CBR0/1/1, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10-13
Channels used by this circuit: 10-13
Cell-Rate: 681, Bit-Rate 256000
cas OFF, cell_header 0x4100 (vci = 1040)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcInactive, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040
Dst: atm addr default vpi 0, vci 0
 
CESwitch# configure terminal
CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces circuit 1 shutdown
CESwitch(config-if)# ces pvc 1 dest-address \
 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 1040
CESwitch(config-if)# no ces circuit 1 shutdown

In order, the commands in this example:

1. Specify the four DS0 time slots 10, 11, 12, and 13 to be used by the soft PVC.

2. Identify the destination (passive) end of the soft PVC.

You do not need to specify individual circuit options on a separate command line, as shown in steps 1 and 2. If you wish, you can specify all the desired circuit options on the same command line, provided that you observe the following rules:

Specify the DS0 time slots as the first option.
Specify each subsequent option in strict alphabetical order .
Separate each command-line option with a space.

3. Enable the soft PVC.

4. Return to the privileged EXEC mode prompt.

5. Display the ATM address for the destination (passive) end of the soft PVC (CBR-PVC-B).

The second line of the show ces address command display is the CES-IWF ATM address for circuit CBR-PVC-B, that is, the destination end of the soft PVC. Use this address in Step 8.

6. Display the VCI number for circuit CBR-PVC-B.

The show ces circuit interface cbr command displays the interface details for circuit CBR-PVC-B, including the vpi 0 vci 1040 field near the end of the output example. You need this value in configuring the destination ATM address and defining the source end of the soft PVC on CBR0/1/0 (see Step 8).

7. Set the chassis to global configuration mode.

8. Set the chassis to interface configuration mode and identify the source (active) side of the soft PVC.

9. Temporarily disable interface CBR0/1/0.

10. Establish the destination CES-IWF ATM address to be used by CBR port 0/1/0 in completing the soft PVC.

11. Reenable the source port (CBR0/1/0).

12. Exit from interface configuration mode and return to privileged EXEC mode.

Verify the Soft PVC with Structured CES Services without CAS

To show the soft PVC configured with structured services and without CAS, use the following EXEC commands:

Command Task

show ces address

Show the CES address for the destination end of the circuit.

show ces circuit

Show the hard PVC configuration information.

show ces circuit interface card/subcard/port circuit_id

Show the detailed soft PVC interface configuration information.

Command	Task
show ces address	Show the CES address for the destination end of the circuit.
show ces circuit	Show the hard PVC configuration information.
show ces circuit interface card/subcard/port circuit_id	Show the detailed soft PVC interface configuration information.

Examples

The following example shows the CES-IWF ATM addresses for the soft PVC (shown in Figure 19-12), using the show ces address command at the privileged EXEC mode prompt:

CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B

The following example shows the details of the CES circuit (shown in Figure 19-12), using the show ces circuit command:

CESwitch# show ces circuit 
Interface	Circuit	Circuit-Type	X-interface	X-vpi	X-vci	Status
 CBR0/1/0	1	Active SoftVCUNKNOWN	0	0UP
 CBR0/1/1	1	Passive SoftVC	UNKNOWN	0	0	UP

The following example shows the interface details for the source port CBR0/1/0 (shown in Figure 19-12), using the show ces circuit interface cbr 0/1/0 1 command:

CESwitch# show ces circuit interface cbr 0/1/0 1
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-3,7
Channels used by this circuit: 1-3,7
Cell-Rate: 681, Bit-Rate 256000
cas OFF, cell_header 0x100 (vci = 16)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
Active SoftVC 
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10 vpi 0, vci 16
Dst: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040

The following example shows the interface details for the destination port (CBR0/1/1) (shown in Figure 19-12), using the show ces circuit interface cbr 0/1/1 1 command:

CESwitch# show ces circuit interface cbr 0/1/1 1
Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / 
Interface CBR0/1/1, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10-13
Channels used by this circuit: 10-13
Cell-Rate: 681, Bit-Rate 256000
cas OFF, cell_header 0x4100 (vci = 1040)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040
Dst: atm addr default vpi 0, vci 0

Configure a Soft PVC for Structured CES Services with CAS

The procedures in this section build on the configuration information in the earlier section "Configure a Soft PVC for Structured CES Services without CAS" (see Figure 19-13). However, this procedure enables channel association signalling (CAS) for the soft PVC.

The following procedure is based on the following assumptions:

Four time slots (DS0 channels) remain as previously configured for the soft PVC:
- For circuit CBR-PVC-A: DS0 channels 1 to 3 and 7 on port CBR0/1/0
- For circuit CBR-PVC-B: DS0 channels 10 to 13 on port CBR0/1/1
CAS will be enabled for the circuit.
The signalling mode for the CBR ports will be set to "robbedbit."
The source (active) side of the soft PVC (CBR-PVC-A) remains as previously configured.
The destination (passive) side of the soft PVC (CBR-PVC-B) remains as previously configured.

Figure 19-13 shows a soft PVC configured for structured CES services with CAS.

Figure 19-13: Soft PVC Configured for Structured CES Services with CAS

To configure a soft PVC for structured CES services with CAS, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface cbr card/subcard/port

Select the physical interface to be configured.

2
ces dsx1 signalmode robbedbit

Configure the signal mode to robbedbit.

3
ces circuit {1-24} shutdown

Disable the CES circuit.

4
ces circuit {1-24} cas [cdv 1-65535 | circuit-name name | on-hook-detect 0-F | partial-fill 20-47 | shutdown]

Configure channel-associated signalling.

5
no ces circuit {1-24} shutdown

Enable the CES circuit.

Step	Command	Task
1	interface cbr card/subcard/port	Select the physical interface to be configured.
2	ces dsx1 signalmode robbedbit	Configure the signal mode to robbedbit.
3	ces circuit {1-24} shutdown	Disable the CES circuit.
4	ces circuit {1-24} cas [cdv 1-65535 \| circuit-name name \| on-hook-detect 0-F \| partial-fill 20-47 \| shutdown]	Configure channel-associated signalling.
5	no ces circuit {1-24} shutdown	Enable the CES circuit.

Example

The following example shows how to enable channel-associated signalling on the soft PVC configured (see Figure 19-13) in the previous section, "Configure a Soft PVC for Structured CES Services without CAS":

CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces dsx1 signalmode robbedbit 
CESwitch(config-if)# ces circuit 1 shutdown 
CESwitch(config-if)# ces circuit 1 cas
CESwitch(config-if)# no ces circuit 1 shutdown 
CESwitch(config-if)# exit
CESwitch(config)# interface cbr 0/1/1
CESwitch(config-if)# ces dsx1 signalmode robbedbit 
CESwitch(config-if)# ces circuit 1 shutdown 
CESwitch(config-if)# ces circuit 1 cas
CESwitch(config-if)# no ces circuit 1 shutdown

In order, the commands in this example:

1. Identify interface CBR0/1/0 for configuration.

2. Configure the DSX1 signal mode to robbedbit.

3. Temporarily disable circuit 1.

4. Configure CAS on circuit 1.

5. Reenable circuit 1.

6. Exit interface configuration mode.

7. Identify interface CBR0/1/1 for configuration.

8. Configure the DSX1 signal mode to robbedbit.

9. Temporarily disable circuit 1.

10. Configure CAS on circuit 1.

11. Reenable circuit 1.

Verify the Soft PVC with Structured CES Services with CAS

To show the soft PVC with structured services and CAS configured in the previous section, use the following EXEC commands:

Command Task

show ces address

Show the CES address for the destination end of the circuit.

show ces circuit

Show the hard PVC configuration information.

show ces circuit interface card/subcard/port circuit_id

Show the detailed soft PVC interface configuration information.

Command	Task
show ces address	Show the CES address for the destination end of the circuit.
show ces circuit	Show the hard PVC configuration information.
show ces circuit interface card/subcard/port circuit_id	Show the detailed soft PVC interface configuration information.

Examples

The following example displays the details of the CES circuit (shown in Figure 19-13), using the show ces circuit command at the privileged EXEC mode prompt:

CESwitch# show ces circuit 
Interface	Circuit	Circuit-Type	X-interface	X-vpi	X-vci	Status
 CBR0/1/0	1	Active SoftVC	UNKNOWN	0	0	UP
 CBR0/1/1	1	Passive SoftVC	UNKNOWN	0	0	UP

The following example displays the CES-IWF ATM addresses for the soft PVC (shown in Figure 19-13), using the show ces address command:

CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B

The following example displays the interface details for the source port CBR0/1/0 (shown in Figure 19-13), using the show ces circuit interface cbr 0/1/0 1 command:

CESwitch# show ces circuit interface cbr 0/1/0 1
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-3,7
Channels used by this circuit: 1-3,7
Cell-Rate: 697, Bit-Rate 256000
cas ON, cell_header 0x100 (vci = 16)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
Active SoftVC 
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10 vpi 0, vci 16
Dst: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040

The following example displays the interface details for the destination port (CBR0/1/1) (shown in Figure 19-13), using the show ces circuit interface cbr 0/1/1 1 command:

CESwitch# show ces circuit interface cbr 0/1/1 1
Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / 
Interface CBR0/1/1, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10-13
Channels used by this circuit: 10-13
Cell-Rate: 697, Bit-Rate 256000
cas ON, cell_header 0x4100 (vci = 1040)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth       57, startDequeueDepth       40
Partial Fill:       47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0, vci 1040
Dst: atm addr default vpi 0, vci 0

Create Multiple Soft PVCs on the Same CES Port

The procedures in this section describe creating more than one structured service PVC on the same T1/E1 port. Figure 19-14 illustrates how you can configure multiple CES circuits on a single T1/E1 port.

Assume that certain configuration information has already been established for a soft PVC (see Figure 19-13) and that you are to create an additional soft PVC involving the same CES module.

The following assumptions apply to creating multiple soft PVCs on the same T1/E1 port (see Figure 19-14):

The source (active) side of a soft PVC named CBR-PVC-A is already created on port CBR0/1/0.
The destination (passive) side of a soft PVC named CBR-PVC-B is already created on port CBR0/1/1.
A new source (active) side of a soft PVC named CBR-PVC-AC will be created on port CBR0/1/0 of the CES module, thereby creating a multiple CES circuit on this particular port.
A new destination (passive) side of a soft PVC named CBR-PVC-CA will be created on port CBR0/1/2 of the CES module.

Figure 19-14: Configuring Multiple Soft PVCs on the Same T1/E1 Port

Configuring multiple soft PVC for structured CES services with CAS is a two-phase process:

Phase 1---Configure the Destination (Passive) Side of Multiple Soft PVCs

To configure multiple soft PVCs on the destination (passive) side of the same port, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface cbr card/subcard/port

Select the physical interface to be configured.

2
ces dsx1 clock source {free-running | loop-timed | network-derived}

Configure the DSX-1 clock source.

3
ces dsx1 framing {esf | sf}

Configure the DSX-1 framing type.

4
ces dsx1 linecode {ami | b8zs}

Configure the DSX-1 line code type.

5
ces circuit {1-24} shutdown

Aministratively shut down the CES circuit.

6
ces aal1 service structured

Configure the CES interface AAL1 service type.

7
ces aal1 clock {adaptive | srts | synchronous}

Configure the CES interface AAL1 clock mode.

8
ces circuit {1-24} timeslots {1-24}

Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.

9
ces circuit {1-24} circuit-name name

Configure the CES interface circuit identifier and circuit name.

10
no ces circuit {1-24} shutdown

Configure the CES crickets in an UP state.

11
exit

Exit interface configuration mode.

Step	Command	Task
1	interface cbr card/subcard/port	Select the physical interface to be configured.
2	ces dsx1 clock source {free-running \| loop-timed \| network-derived}	Configure the DSX-1 clock source.
3	ces dsx1 framing {esf \| sf}	Configure the DSX-1 framing type.
4	ces dsx1 linecode {ami \| b8zs}	Configure the DSX-1 line code type.
5	ces circuit {1-24} shutdown	Aministratively shut down the CES circuit.
6	ces aal1 service structured	Configure the CES interface AAL1 service type.
7	ces aal1 clock {adaptive \| srts \| synchronous}	Configure the CES interface AAL1 clock mode.
8	ces circuit {1-24} timeslots {1-24}	Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.
9	ces circuit {1-24} circuit-name name	Configure the CES interface circuit identifier and circuit name.
10	no ces circuit {1-24} shutdown	Configure the CES crickets in an UP state.
11	exit	Exit interface configuration mode.

Example

The following example shows how to configure multiple soft PVCs on the destination (passive) side of the same port (shown in Figure 19-14):

CESwitch(config)# interface cbr 0/1/2
CESwitch(config-if)# ces dsx1 clock source network-derived 
CESwitch(config-if)# ces dsx1 linecode b8zs
CESwitch(config-if)# ces dsx1 framing esf
CESwitch(config-if)# shutdown
CESwitch(config-if)# ces aal1 service structured
CESwitch(config-if)# ces aal1 clock synchronous
CESwitch(config-if)# ces circuit 1 timeslots 10 circuit-name CBR-PVC-CA
CESwitch(config-if)# no ces circuit 1 shutdown

In order, the commands in this example:

1. Identify interface CBR0/1/2 for configuration.

2. Configure interface CBR0/1/0 to use the network-derived clocking signal for network clock synchronization services.

Note In the synchronous clocking mode, the PRS is always derived from the networking environment. You must set the CBR port to use this clocking signal for synchronizing CBR data transport.

3. Configure the port to support b8zs coding for the DSX-1 physical layer.

4. Configure the port to use the ESF framing format for the T1/E1 interface.

5. Enable the port.

6. Establish structured CES services for the port.

7. Establish the synchronous clocking mode for the port.

8. Specify the 10 DS0 time slots to be used by the soft PVC and assign the circuit name CBR-PVC-CA.

Specify the DS0 time slots as the first option.
Specify each subsequent option in strict alphabetical order .
Separate each command-line option with a space.

Phase 2---Configure the Source (Active) Side of Multiple Soft PVCs

To configure multiple soft PVCs on the source (active) side of the same port, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface cbr card/subcard/port

Select the physical interface to be configured.

2
ces circuit {1-24} timeslots {1-24}

Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.

3
ces circuit {1-24} circuit-name name

Configure the CES interface circuit identifier and circuit name.

4
no ces circuit {1-24} shutdown

Enable the CES circuit.

5
end

Exit interface configuration mode.

6
show ces address

Show the CES address for the destination end of the circuit.

7
show ces circuit interface card/subcard/port circuit_id

Show the detailed soft PVC interface configuration information.

8
configure terminal

At the privileged EXEC prompt, enter configuration mode from the terminal.

9
interface atm card/subcard/port

Select the physical interface to be configured.

10
ces circuit {1-24} shutdown

Disable the CES circuit.

11
ces pvc 0 dest-address remote_atm_address vpi 0-4095 vci 1-16383

Configure the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.

12
no ces circuit {1-24} shutdown

Enable the CES circuit.

Step	Command	Task
1	interface cbr card/subcard/port	Select the physical interface to be configured.
2	ces circuit {1-24} timeslots {1-24}	Configure the CES interface circuit identifier and list of T1 time slot number(s) that comprise the CES-IWF circuit.
3	ces circuit {1-24} circuit-name name	Configure the CES interface circuit identifier and circuit name.
4	no ces circuit {1-24} shutdown	Enable the CES circuit.
5	end	Exit interface configuration mode.
6	show ces address	Show the CES address for the destination end of the circuit.
7	show ces circuit interface card/subcard/port circuit_id	Show the detailed soft PVC interface configuration information.
8	configure terminal	At the privileged EXEC prompt, enter configuration mode from the terminal.
9	interface atm card/subcard/port	Select the physical interface to be configured.
10	ces circuit {1-24} shutdown	Disable the CES circuit.
11	ces pvc 0 dest-address remote_atm_address vpi 0-4095 vci 1-16383	Configure the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit.
12	no ces circuit {1-24} shutdown	Enable the CES circuit.

Example

The following example shows how to configure multiple soft PVCs on the source (active) side of the same port (shown in Figure 19-14):

CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces circuit 2 timeslots 24
CESwitch(config-if)# ces circuit 2 circuit-name CBR-PVC-AC
CESwitch(config-if)# no ces circuit 1 shutdown
CESwitch(config-if)# ^Z
CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20  CBR-PVC-AC
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10  CBR-PVC-CA
 
CESwitch# show ces circuit interface cbr 0/1/2 1
Circuit: Name CBR-PVC-CA, Circuit-state ADMIN_UP / 
Interface CBR0/1/2, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10
Channels used by this circuit: 10
Cell-Rate: 171, Bit-Rate 64000
cas OFF, cell_header 0x8100 (vci = 2064)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcInactive, maxQueueDepth        0, startDequeueDepth        0
Partial Fill:       47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 vpi 0, vci 2064
Dst: atm addr default vpi 0, vci 0
 
CESwitch# configure terminal 
CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces pvc 2 dest-address \
 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10  vpi 0 vci 2064
CESwitch(config-if)# no ces circuit 2 shutdown

In order, the commands in this example:

1. Identify interface CBR0/1/0 for configuration.

2. Configure CES circuit 2 on port CBR0/1/0 and use all 24 DS0 time slots for the new PVC.

3. Assign circuit 2 the logical name CBR-PVC-AC.

4. Enable the source port for the new soft PVC.

5. Exit from interface configuration mode and return to the privileged EXEC mode prompt.

6. Display the CES-IWF ATM addresses assigned by the PAM hardware using the interface cbr 0/1/0 command.

Note The interface cbr 0/1/0 command displays, in the last line of the example output, the CES-IWF ATM address of the destination (passive) side of the new soft PVC that you are creating. Use this address in Step 10.

7. Retrieve the VPI/VCI values of the destination port (CBR-PVC-CA), using the show ces circuit interface cbr command.

Note The VPI/VCI values appear in the last line of the show ces circuit interface cbr command output example. These are the VPI/VCI values you must enter in Step 6, together with the CES-IWF ATM address of the destination port of the new soft PVC (CBR-PVC-CA) you obtained in Step 10.

8. Set the chassis to global configuration mode.

9. Identify interface CBR0/1/0 for configuration.

10. Assign the CES-IWF ATM address to the destination port (CBR0/1/2) of the new soft PVC named CBR-PVC-CA (see Figure 19-14).

11. Enable the circuit to make the new soft PVC operational.

Verify the Creation of Multiple Soft PVCs on the Same CES Port

To show the multiple soft PVCs configured with structured services and CAS in the previous section, use the following EXEC commands:

Command Task

show ces address

Show the CES address for the destination end of the circuit.

show ces circuit

Show the hard PVC configuration information.

show ces circuit interface card/subcard/port circuit_id

Show the detailed soft PVC interface configuration information.

Examples

The following example displays the circuit details for the soft PVCs that you created in the previous procedure (shown in Figure 19-14) using the show ces circuit command in privileged EXEC mode:

CESwitch# show ces circuit 
Interface	Circuit	Circuit-Type	 X-interface	 X-vpi	 X-vci 	Status
 CBR0/1/0	1	Active SoftVC	UNKNOWN	0	0	UP
 CBR0/1/0	2	Active SoftVC		UNKNOWN		0		0		UP
 CBR0/1/1	1	Passive SoftVC		UNKNOWN		0		0		UP
 CBR0/1/2	1	Passive SoftVC		UNKNOWN		0		0		UP

The following example displays the CES-IWF addresses of the soft PVCs that you configured (shown in Figure 19-14) using the show ces address command in privileged EXEC mode:

CESwitch# show ces address 
 
CES-IWF ATM Address(es):
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.10  CBR-PVC-A
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20  CBR-PVC-AC
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10  CBR-PVC-B
47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10  CBR-PVC-CA

The following example displays the interface details for the new circuit 2 soft PVC that you set up on port CBR0/1/0 (shown in Figure 19-14) using the show ces circuit interface cbr command:

CESwitch# show ces circuit interface cbr 0/1/0 2
Circuit: Name CBR-PVC-AC, Circuit-state ADMIN_UP / 
Interface CBR0/1/0, Circuit_id 2, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-3,7,24
Channels used by this circuit: 24
Cell-Rate: 171, Bit-Rate 64000
cas OFF, cell_header 0x200 (vci = 32)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth      128, startDequeueDepth      111
Partial Fill:       47, Structured Data Transfer 1
Active SoftVC 
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20 vpi 0, vci 32
Dst: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 vpi 0, vci 2064

The show ces circuit interface cbr command displays the interface details pertaining to circuit 2 of the multiple CES soft PVC previously set up on port 0 of the CES module.

The following example displays the interface details for the new circuit 1 soft PVC that you configured on port CBR0/1/2 (shown in Figure 19-14) using the show ces circuit interface cbr command:

CESwitch# show ces circuit interface cbr 0/1/2 1
Circuit: Name CBR-PVC-CA, Circuit-state ADMIN_UP / 
Interface CBR0/1/2, Circuit_id 1, Port-Type T1, Port-State UP 
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10
Channels used by this circuit: 10
Cell-Rate: 171, Bit-Rate 64000
cas OFF, cell_header 0x8100 (vci = 2064)
cdv 2000 usecs, Measured cdv -1 usecs
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcActive, maxQueueDepth      128, startDequeueDepth      111
Partial Fill:       47, Structured Data Transfer 1
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 vpi 0, vci 2064
Dst: atm addr default vpi 0, vci 0

Configure Structured CES Services with CAS and On-Hook Detection Enabled

This section outlines the additional steps that you must take to activate the on-hook detection (bandwidth-release) feature in a 1 x 64 structured CES circuit.

To configure on-hook detection on a soft PVC for structured CES services with CAS, perform the following tasks, beginning in global configuration mode:

Step Command Task

1
interface cbr card/subcard/port

Select the physical interface to be configured.

2
ces circuit {1-24} shutdown

Disable the CES circuit.

3
ces circuit {1-24} cas [cdv 1-65535 | circuit-name name | on-hook-detect 0-F | partial-fill 20-47 | shutdown]

Configure on-hook detection on the CES circuit.

4
no ces circuit {1-24} shutdown

Enable the CES circuit.

Example

The following example shows how to configure on-hook detection on the soft PVC with structured CES services and CAS configured in the previous section "Configure a Soft PVC for Structured CES Services with CAS" (shown in Figure 19-13):

CESwitch(config)# interface cbr 0/1/0
CESwitch(config-if)# ces circuit 1 shutdown
CESwitch(config-if)# ces circuit 1 cas on-hook-detect 2
CESwitch(config-if)# no ces circuit 1 shutdown

In order, the commands in this example:

1. Identify interface CBR0/1/0 for configuration.

2. Configure CES circuit 1 on port CBR0/1/0 and use one DS0 time slot at each end of the connection for the new PVC.

3. Configure CES circuit 1 for channel-associated signalling to allow on-hook detection with the hexadecimal number 2.

Note The four ABCD bits in the CAS mechanism are device-specific, depending on the manufacturer of the voice/video telephony device that generates the CBR traffic. The ABCD bits of the CAS mechanism are user-configurable.

Verify the On-Hook Detection

To show the on-hook detection configuration of a soft PVC configured with structured services and CAS in the previous section, use the following EXEC command:

Command Task

show ces circuit interface card/subcard/port circuit_id

Show the detailed soft PVC interface configuration information.

Example

The following example shows the soft PVC with CAS and on-hook detection enabled as hexadecimal number 2 (shown in Figure 19-13):

CESwitch# show ces circuit interface CBR0/1/0 1
Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / Interface CBR4/0/1, Circuit_id
 1, Port-Type T1, Port-State UP
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 10-13
Channels used by this circuit: 10-13
Cell-Rate: 697, Bit-Rate 256000
cas ON, cell_header 0x4100 (vci = 1040)
Configured CDV 2000 usecs, Measured CDV unavailable
De-jitter: UnderFlow unavailable, OverFlow unavaliable
ErrTolerance 8, idleCircuitdetect ON, onHookIdleCode 0x2
state: VcInactive, maxQueueDepth        0, startDequeueDepth        0
Partial Fill:       47, Structured Data Transfer 98
Passive SoftVC
Src: atm addr 47.0091.8100.0000.0040.0b0a.2b81.4000.0c82.0034.10 vpi 0, vci 1040
Dst: atm addr default

Config uring 25-Mbps Interfaces

The 25-Mbps PAM has twelve 25.6-Mbps ATM ports used for workgroup links. Each port complies with the ATM Forum PHY standard for 25.6 Mbps over twisted-pair cable. You can configure any of the 12 ports on the PAM as a redundant link using the switch's routing protocols. The PAM has a 96-pin Molex connector and a multileg 12 RJ-45 cable assembly.

The plug-and-play mechanisms of the LightStream 1010 ATM switch allow the switches to come up automatically. All configuration information for the PAMs can be saved between hot swaps and switch reboots, while interface types are automatically discovered by the switch, thereby eliminating mandatory manual configuration.

The LightStream 1010 ATM switch supports any combination of PAMs. You can configure your switch with only the number and type of interfaces required, with up to 96 25-Mbps interface ports.

Default 25-Mbps ATM Interface Confi guration Without Autoconfiguration

If ILMI is disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all twelve 25-Mbps interfaces:

ATM interface type = UNI
UNI version = 3.0
Maximum VPI bits = 8
Maximum VCI bits = 14
ATM interface side = network
ATM UNI type = private

The following parameters can be configured on physical ports 0 or 6 of the 25-Mbps PAM. Parameters configured on port 0 apply to ports 0 to 5, and parameters configured on port 6 apply to ports 6 to 11:

Output-queue
Output-threshold
CAC link sharing

Note Pacing might not be configured on any physical port of the 25-Mbps PAM.

Manual 25-Mbps Interface Configuration

Example

The following example shows how to change the default ATM interface type to private, using the atm uni type private command:

Switch(config)# interface atm 0/0/0
Switch(config-if)# atm uni type private

Refer to the section "Troubleshooting the Interface Configuration" to confirm your interface configuration.

T roubleshooting the Interface Conf iguration

Table 19-2 describes commands that you can use to confirm that the hardware, software, and interfaces for the LightStream 1010 ATM switch are configured as intended:

Table 19-2:

Command Description

show version

Confirm the correct version and type of software is installed.

show hardware

Confirm the type of hardware installed in the system.

show interface ethernet

Confirm the type of hardware installed in the system.

show atm addresses

Confirm the ATM address is configured correctly.

ping atm

Test for connectivity between the switch and a host.

show {atm | ces} interface

Confirm the ATM interfaces are configured correctly.

show atm status

Confirm the status of the ATM interfaces.

show atm vc

Confirm the status of ATM virtual interfaces.

show running-config

Confirm the configuration being used is configured correctly.

show startup-config

Confirm the configuration saved in NVRAM is configured correctly.

show controller {atm | ethernet}

Confirm interface controller memory addressing.

Configuration Testing Commands

Step	Command	Task
1	interface cbr card/subcard/port	Select the physical interface to be configured.
2	ces circuit {1-24} shutdown	Disable the CES circuit.
3	ces circuit {1-24} cas [cdv 1-65535 \| circuit-name name \| on-hook-detect 0-F \| partial-fill 20-47 \| shutdown]	Configure on-hook detection on the CES circuit.
4	no ces circuit {1-24} shutdown	Enable the CES circuit.

Step	Command	Task
1	interface atm card/subcard/port	Specify an ATM interface and enter interface configuration mode.
2	atm uni [side {private \| public} type {network \| user} version {3.0 \| 3.1 \| 4.0}]	Modify the ATM interface side, type, or version.
3	atm uni version {3.0 \| 3.1\| 4.0}	Modify the UNI version.
4	atm maxvpi-bits 0-8	Modify the maximum VPI bits configuration.
5	atm maxvci-bits 0-14	Modify the maximum VCI bits configuration.
6	atm uni type {network \| user}	Modify the ATM interface side.

Command	Description
show version	Confirm the correct version and type of software is installed.
show hardware	Confirm the type of hardware installed in the system.
show interface ethernet	Confirm the type of hardware installed in the system.
show atm addresses	Confirm the ATM address is configured correctly.
ping atm	Test for connectivity between the switch and a host.
show {atm \| ces} interface	Confirm the ATM interfaces are configured correctly.
show atm status	Confirm the status of the ATM interfaces.
show atm vc	Confirm the status of ATM virtual interfaces.
show running-config	Confirm the configuration being used is configured correctly.
show startup-config	Confirm the configuration saved in NVRAM is configured correctly.
show controller {atm \| ethernet}	Confirm interface controller memory addressing.

Table of Contents

Configuring Port Adapter Module Interfaces

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Phase 2---Configure the Source (Active) Soft PVC

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