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This chapter describes circuit emulation services (CES) and how to configure the CES T1/E1 port adapters in the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. You can use CES T1/E1 port adapters for links that require constant bit rate (CBR) services.
This chapter includes the following sections:
You can use CES T1/E1 port adapters for links that require CBR services, such as interconnecting Private Branch Exchanges (PBXs), time-division multiplexers (TDMs), and video conference equipment over campus, public, or private networks.
This section provides an overview of the hardware features and functions supported on the CES T1/E1 port adapters.
You can configure each interface on the port adapter to support the following clocking options:
The number of CES T1/E1 interfaces you can configure is platform dependent:
The CES T1 port adapters support UTP connectors and the CES E1 port adapters support UTP, foil twisted-pair (FTP), 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.
The functions supported by a CES module include the following:
The CES modules support the framing formats and line coding options shown in Table 18-1.
| Module | Framing Options/Description | Line Coding Options |
|---|---|---|
CES T1 port adapter |
| ami or b8zs |
CES E1 port adapter (120-ohm) |
| ami or hdb3 |
The following defaults are assigned to all CES T1/E1 interfaces:
The following defaults are assigned to CES T1 port adapters:
The following defaults are assigned to CES E1 port adapters:
To manually change any of the CES T1/E1 default configuration values, enter the interface cbr global configuration command to specify a CBR interface, as follows:
interface cbr card/subcard/portTo configure the CES T1/E1 interfaces perform the following command, beginning in global configuration mode:
| Command | Purpose |
|---|---|
ces aal1 clock {adaptive | srts | synchronous} | Configures the type of clocking. Note For structured CES, the default is synchronous. |
ces aal1 service {structured | unstructured} | Configures the service type. The default is unstructured. |
ces circuit circuit-id [cas] [cdv max-req] | Configures the following CES connection attributes for the circuit:
|
ces dsx1 clock source {loop-timed | network-derived} | Configures the clock source. The default is network-derived. |
| Configures the framing type.
|
ces dsx1 lbo {0_110 | 110_220 | 220_330 | 330_440 | 440_550 | 550_660 | 660_above | square_pulse} | Configures the line build-out. The default is 0_110. |
ces dsx1 linecode {ami | b8zs | hdb3} | Configures the line code type.
|
ces dsx1 loopback {line | noloop | payload} | Configures the loopback test method. The default is noloop. |
Configures the signal mode to robbedbit. The default is no. | |
| Configures the destination port for the circuit and configures a hard PVC, as follows:
Configures the destination port for the circuit and configures the soft PVC, as follows:
|
The following example shows how to change the default cell delay variation for circuit 0 to 30,000, using the ces circuit command:
Switch# configure terminal Switch(config)# interface cbr 3/0/0 Switch(config-if)# shutdown Switch(config-if)# ces circuit 0 cdv 3000 Switch(config-if)# no shutdown
The following example shows how to change the default CBR interface framing mode to super frame, using the ces dsx1 framing command:
Switch# configure terminal 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 line build-out to 330 to 440 feet, using the ces dsx1 lbo command:
Switch# configure terminal 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 line code method to binary 8 zero suppression, using the ces dsx1 linecode command:
Switch# configure terminal 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 loopback method to payload, using the ces dsx1 loopback command:
Switch# configure terminal Switch(config)# interface cbr 3/0/0 Switch(config-if)# ces dsx1 loopback payload
See the section "Troubleshooting the Interface Configuration" in the chapter "Configuring Interfaces" to confirm your interface configuration.
You can create either hard private virtual circuits (PVCs) or soft PVCs for unstructured or structured CES, depending on your particular CES application requirements. The main difference between hard and soft PVCs is rerouting in case of failure, as follows:
This section provides general guidelines for configuring soft PVCs for CES modules. For specific instructions for configuring both hard and soft PVCs, see the following sections:
To configure soft PVCs for either unstructured or structured circuit emulation services, follow these steps:
Step 1 Determine which CES interfaces are currently configured in your ATM switch router chassis, using the show ces status command in privileged EXEC mode.
CESwitch# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR3/0/0 UP UP T1
CBR3/0/1 DOWN UP T1
CBR3/0/2 DOWN UP T1
CBR3/0/3 UP UP T1
Step 2 Determine which two ports you want to define as participants in the soft PVC.
Step 3 Decide which of the two ports you want to designate as the destination (or passive) side of the soft PVC.
Step 4 Configure the destination (passive) side of the soft PVC. You must configure the destination end of the soft PVC first, as this end defines a CES-IWF ATM address for that circuit.
CESwitch# configure terminal CESwitch(config)# interface cbr 3/0/1 CESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-B
Step 5 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 and VPI/VCI 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 vpi 0 vci 16 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20 CBR-PVC-AC vpi 0 vci 1056 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 CBR-PVC-B vpi 0 vci 1040 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 CBR-PVC-CA vp1 0 vci 3088
Step 6 Configure the source (active) end of the soft PVC last, using the information derived from 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 circuit.
CESwitch(config)#interface cbr 3/0/0CESwitch(config)#ces circuit 0 CESwitch(config-if)# ces pvc 0 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 1040
Step 7 To verify that the CES circuits are up on both sides (source and destination), run the show ces interface command. To verify that the soft PVC was established between two switches, run the show atm vc interface command.
This section provides an overview of unstructured (clear channel) circuit emulation services and describes how to configure CES modules for unstructured circuit emulation services.
Unstructured circuit emulation services in an ATM switch router 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.
For a detailed description of unstructured circuit emulation services, refer to the Guide to ATM Technology.
The circuit you set up on a CBR port for unstructured service is always identified as circuit 0, because you can establish only one unstructured circuit on any given CBR port. An unstructured circuit uses the entire bandwidth of a T1 port (1.544 Mbps) or an E1 port (2.048 Mbps).
The procedures for configuring CES modules for unstructured circuit emulation services are described in the following subsections:
Circuit emulation services require that the network clock be configured properly. Unstructured services can use synchronous, Synchronous Residual Time Stamp (SRTS), or adaptive clocking mode. For instructions on configuring network clocking, see the section "Configuring Network Clocking" in the chapter "Initially Configuring the ATM Switch Router." For a discussion of clocking issues and network examples, refer to the network clock synchronization and network clocking for CES topics in the Guide to ATM Technology.
When synchronous clocking is being used and propagated via an OC-12c interface module, be sure to use the following configurations:
A CES module converts CBR traffic into ATM cells for propagation through an ATM network. CBR traffic arriving on a CES module port must first be segmented into ATM cells. This cell stream is then directed to an outgoing ATM or CBR port.
Figure 18-1 displays unstructured circuit emulation services configured on an ATM switch router, using ATM and CES interface modules to create a hard PVC. In this example, the hard PVC also uses adaptive clocking, and this CES circuit enables bidirectional, unstructured CBR traffic to flow between these two modules.
To configure a hard PVC for unstructured CES, follow these steps, beginning in privileged EXEC mode.
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces status | Displays information about the current CBR interfaces. Use this command to choose the source CBR port. | ||
| show atm status | Displays information about the current ATM interfaces. Use this command to choose the destination ATM port. Note The interface must be up. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces aal1 clock {adaptive | srts | synchronous} | Configures the AAL1 clock mode. | ||
| ces aal1 service {structured | unstructured} | Configures the CES interface AAL1 service type. | ||
| ces circuit circuit-id circuit-name name | Configures the CES interface circuit identifier and circuit name. Note For unstructured service, use 0 for the circuit identifier. | ||
| ces pvc circuit-id interface atm card/subcard/port vpi vpi vci vci | Configures the hard PVC to the ATM interface and VPI/VCI. Note The VPI/VCI are arbitrary here. They are not fixed, whereas the VPI/VCI described in the "General Guidelines for Creating Soft PVCs for Circuit Emulation Services" section are fixed. |
The following example shows how to configure the hard PVC for unstructured CES (shown in Figure 18-1):
CESwitch# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR3/0/0 UP UP T1
CBR3/0/1 DOWN UP T1
CBR3/0/2 DOWN UP T1
CBR3/0/3 UP UP T1
CESwitch# show atm status
NUMBER OF INSTALLED CONNECTIONS: (P2P=Point to Point, P2MP=Point to MultiPoint,
MP2P=Multipoint to Point)
Type PVCs SoftPVCs SVCs TVCs PVPs SoftPVPs SVPs Total
P2P 27 2 13 0 0 0 0 42
P2MP 0 0 2 0 0 0 0 2
MP2P 0 0 0 0 0 0 0 0
TOTAL INSTALLED CONNECTIONS = 44
PER-INTERFACE STATUS SUMMARY AT 18:12:45 UTC Thu Jul 22 1999:
Interface IF Admin Auto-Cfg ILMI Addr SSCOP Hello
Name Status Status Status Reg State State State
------------- -------- ------------ -------- ------------ --------- --------
ATM0/0/1 DOWN down waiting n/a Idle n/a
ATM0/0/5 DOWN shutdown waiting n/a Idle n/a
ATM0/0/6 DOWN shutdown waiting n/a Idle n/a
ATM0/0/7 DOWN shutdown waiting n/a Idle n/a
ATM0/0/ima1 UP up done UpAndNormal Active 2way_in
ATM0/1/0 DOWN shutdown waiting n/a Idle n/a
ATM0/1/1 DOWN shutdown waiting n/a Idle n/a
ATM0/1/2 DOWN shutdown waiting n/a Idle n/a
ATM0/1/3 DOWN shutdown waiting n/a Idle n/a
ATM0/1/7 DOWN down waiting n/a Idle n/a
ATM0/1/ima2 UP up done UpAndNormal Active 2way_in
ATM1/0/0 DOWN down waiting n/a Idle n/a
ATM1/0/1 DOWN down waiting n/a Idle n/a
ATM1/0/2 DOWN down waiting n/a Idle n/a
ATM1/0/3 UP up done UpAndNormal Active n/a
ATM1/1/0 UP up done UpAndNormal Active n/a
ATM1/1/1 DOWN down waiting n/a Idle n/a
ATM1/1/2 DOWN down waiting n/a Idle n/a
ATM1/1/3 DOWN down waiting n/a Idle n/a
ATM2/0/0 UP up n/a UpAndNormal Idle n/a
ATM-P3/0/3 UP up waiting n/a Idle n/a
ATM3/1/0 DOWN down waiting n/a Idle n/a
ATM3/1/1 UP up done UpAndNormal Active 2way_in
ATM3/1/1.99 UP up done UpAndNormal Active 2way_in
ATM3/1/2 DOWN down waiting n/a Idle n/a
ATM3/1/3 DOWN down waiting n/a Idle n/a
ATM-P4/0/0 UP up waiting n/a Idle n/a
CESwitch# configure terminal
CESwitch(config)# interface cbr 3/0/0
CESwitch(config-if)# ces aal1 clock adaptive
CESwitch(config-if)# ces aal1 service unstructured
CESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-A
CESwitch(config-if)# ces pvc 0 interface atm 0/1/3 vpi 0 vci 100
To verify the hard PVC configuration, use the following privileged EXEC commands:
| Command | Purpose |
|---|---|
Shows configuration information for the hard PVC. | |
show ces circuit interface cbr card/subcard/port circuit-id | Shows detailed interface configuration information for the hard PVC. |
The following example shows how to display the basic information about the hard PVC shown in Figure 18-1, using the show ces circuit command:
CESwitch# show ces circuit Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/0/0 0 HardPVC ATM0/1/3 0 100 UP
The output from this command verifies the source (CBR 3/0/0) and destination (ATM 0/1/3) port IDs of the hard PVC and indicates that the circuit is up.
The following example shows how to display detailed information about the hard PVC shown in Figure 18-1, using the show ces circuit interface command:
CESwitch# show ces circuit interface cbr 3/0/0 0 Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/0, 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) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow 903952, OverFlow 0 ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcAlarm, maxQueueDepth 827, startDequeueDepth 437 Partial Fill: 47, Structured Data Transfer 0 HardPVC src: CBR3/0/0 vpi 0, vci 16 Dst: ATM0/1/3 vpi 0, vci 100
The output from this command verifies the following configuration information:
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.
The destination address of a soft PVC can point to either of the following:
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 to complete soft PVC setup.
To obtain the destination address (dest-address) for a port already configured in a CES port adapter, log into the remote ATM switch router containing that module. Then use the show ces address command to display all the CES-IWF ATM addresses currently configured for that node.
Figure 18-2 displays a soft PVC configured for unstructured CES. The soft PVC uses adaptive clocking and the source clock is network-derived.
Configuring a soft PVC for unstructured CES is a two-phase process:
To configure the destination (passive) side of a soft PVC destination port, follow these steps, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces status | Displays information about current CBR interfaces. Use this command to choose the destination port. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces aal1 clock {adaptive | srts | synchronous} | Configures the CES interface AAL1 clock mode. | ||
| ces aal1 service {structured | unstructured} | Configures the CES interface AAL1 service type. | ||
| ces dsx1 clock source {loop-timed | network-derived} | Configures the CES interface clock source. | ||
| ces circuit circuit-id circuit-name name | Configures the CES interface circuit identifier and circuit name. Note For unstructured service, use 0 for the circuit identifier. |
The following example shows how to configure the destination (passive) side of a soft PVC, as shown in Figure 18-2:
CESwitch# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR3/0/0 UP UP T1
CBR3/0/1 UP UP T1
CBR3/0/2 UP UP T1
CBR3/0/3 UP UP T1
CESwitch# configure terminal
CESwitch(config)# interface cbr 3/0/1
CESwitch(config-if)# ces aal1 clock synchronous
CESwitch(config-if)# ces aal1 service unstructured
CESwitch(config-if)# ces dsx1 clock source network-derived
CESwitch(config-if)# ces circuit 0 circuit-name CBR-PVC-B
To configure the source (active) side of a soft PVC destination port, follow these tasks, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces address | Shows the CES address and VPI/VCI for the destination end of the circuit. Use this command to retrieve the destination's VPI/VCI. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces circuit circuit-id circuit-name name | Configures the CES interface circuit identifier and circuit name. Note For unstructured service, use 0 for the circuit identifier. | ||
| ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci | Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit. Note Use the destination's VPI/VCI, which you retrieved in Step 1. |
The following example shows how to configure the source (active) side of a soft PVC, as shown in Figure 18-2:
CESwitch# show ces address CES-IWF ATM Address(es): 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 CBR-PVC-BCESwitch#configure terminalCESwitch(config)#interface cbr 3/0/0CESwitch(config)#ces circuit 0 circuit-name CBR-PVC-A CESwitch(config-if)# ces pvc 0 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 1040
To verify the soft PVC configuration, use the following privileged EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows the soft PVC configuration information. |
show ces circuit interface cbr card/subcard/port circuit-id | Shows the detailed soft PVC interface configuration information. |
The following example shows how to display the soft PVC configured in the previous section (shown in Figure 18-2), using the show ces circuit command:
CESwitch# show ces circuit Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/0/0 0 Active SoftVC ATM-P3/0/3 0 16 UP CBR3/0/1 0 Passive SoftVC ATM-P3/0/3 0 1040 UP
The following example shows how to display the detailed circuit information for CBR 3/0/1, the destination (passive) side of the soft PVC (shown in Figure 18-2), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/1 0 Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/1, 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 0xC100 (vci = 3088) Configured CDV 2000 usecs, Measured CDV 2378 usecs De-jitter: UnderFlow 137, OverFlow 0 ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 823, startDequeueDepth 435 Partial Fill: 47, Structured Data Transfer 0 Passive SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 1040 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
The following example shows how to display the detailed circuit information for CBR 3/0/0, the source (active) side of the soft PVC (shown in Figure 18-2), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 0 Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/0, 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) Configured CDV 2000 usecs, Measured CDV 326 usecs De-jitter: UnderFlow 1, OverFlow 0 ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcAlarm, maxQueueDepth 823, startDequeueDepth 435 Partial Fill: 47, Structured Data Transfer 0 Active SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10
This section provides an overview of structured (n x 64 Kbps) circuit emulation services and describes how to configure CES modules for structured circuit emulation services.
An important distinction between structured and unstructured circuit emulation services is that structured circuit emulation services allow you to allocate T1/E1 bandwidth. Structured circuit emulation 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 port. In both module types, any bits not available for structured circuit emulation services are used for framing and out-of-band control.
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 or equal to 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) circuit emulation services enable a CES module to function in the same way as a classic digital access and crossconnect system (DACS) switch.
The Simple Gateway Control Protocol (SGCP) provides similar functionality by controlling structured CES circuits for voice over ATM. For additional information see the section "Configuring SGCP" later in this chapter.
For a detailed description of structured circuit emulation services, refer to the Guide to ATM Technology.
Circuit emulation services require that the network clock be configured properly. For structured services, synchronous clocking is required. For instructions on configuring network clocking, see the section "Configuring Network Clocking" in the chapter "Initially Configuring the ATM Switch Router." For a discussion of clocking issues and network examples, refer to the network clock synchronization and network clocking for CES topics in the Guide to ATM Technology.
When synchronous clocking is being used and propagated via an OC-12c interface module, be sure to use the following configurations:
This section describes how to configure a hard PVC for structured circuit emulation services.
Figure 18-3 shows that the hard PVC for structured CES connection is configured with the following parameters:
To configure the CES port for structured CES, follow these steps, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces status | Displays information about current CBR interfaces. Use this command to choose the source port. | ||
| show atm status | Displays information about current ATM interfaces. Use this command to choose the destination port. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces aal1 service {structured | unstructured} | Configures the CES interface AAL1 service type. | ||
| ces dsx1 clock source {loop-timed | network-derived} | Configures the CES interface clock source. | ||
|
| Configures the CES line type. | ||
|
| Configures the line coding. | ||
| ces circuit circuit-id timeslots number | Configures the following CES connection attributes for the circuit:
| ||
| ces circuit circuit-id circuit-name name | Configures the CES circuit name. | ||
| ces pvc circuit-id interface atm card/subcard/port vpi vpi vci vci | Configures the hard PVC to the ATM interface and VPI/VCI. |
The following example shows how to configure the hard PVC for structured T1 CES, as shown in Figure 18-3:
CESwitch# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR3/0/0 UP UP T1
CBR3/0/1 UP UP T1
CBR3/0/2 UP UP T1
CBR3/0/3 UP UP T1
CESwitch# show atm status
NUMBER OF INSTALLED CONNECTIONS: (P2P=Point to Point, P2MP=Point to MultiPoint,
MP2P=Multipoint to Point)
Type PVCs SoftPVCs SVCs TVCs PVPs SoftPVPs SVPs Total
P2P 27 2 13 0 0 0 0 42
P2MP 0 0 2 0 0 0 0 2
MP2P 0 0 0 0 0 0 0 0
TOTAL INSTALLED CONNECTIONS = 44
PER-INTERFACE STATUS SUMMARY AT 18:12:45 UTC Thu Jul 22 1999:
Interface IF Admin Auto-Cfg ILMI Addr SSCOP Hello
Name Status Status Status Reg State State State
------------- -------- ------------ -------- ------------ --------- --------
ATM0/0/1 DOWN down waiting n/a Idle n/a
ATM0/0/5 DOWN shutdown waiting n/a Idle n/a
ATM0/0/6 DOWN shutdown waiting n/a Idle n/a
ATM0/0/7 DOWN shutdown waiting n/a Idle n/a
ATM0/0/ima1 UP up done UpAndNormal Active 2way_in
ATM0/1/0 DOWN shutdown waiting n/a Idle n/a
ATM0/1/1 DOWN shutdown waiting n/a Idle n/a
ATM0/1/2 DOWN shutdown waiting n/a Idle n/a
ATM0/1/3 UP up done UpAndNormal Active n/a
ATM0/1/7 DOWN down waiting n/a Idle n/a
ATM0/1/ima2 UP up done UpAndNormal Active 2way_in
ATM1/0/0 DOWN down waiting n/a Idle n/a
ATM1/0/1 DOWN down waiting n/a Idle n/a
ATM1/0/2 DOWN down waiting n/a Idle n/a
ATM1/0/3 UP up done UpAndNormal Active n/a
ATM1/1/0 UP up done UpAndNormal Active n/a
ATM1/1/1 DOWN down waiting n/a Idle n/a
ATM1/1/2 DOWN down waiting n/a Idle n/a
ATM1/1/3 DOWN down waiting n/a Idle n/a
ATM2/0/0 UP up n/a UpAndNormal Idle n/a
ATM-P3/0/3 UP up waiting n/a Idle n/a
ATM3/1/0 DOWN down waiting n/a Idle n/a
ATM3/1/1 UP up done UpAndNormal Active 2way_in
ATM3/1/1.99 UP up done UpAndNormal Active 2way_in
ATM3/1/2 DOWN down waiting n/a Idle n/a
ATM3/1/3 DOWN down waiting n/a Idle n/a
ATM-P4/0/0 UP up waiting n/a Idle n/a
CESwitch# configure terminal
CESwitch(config)# interface cbr 3/0/0
CESwitch(config-if)# ces aal1 service structured
CESwitch(config-if)# ces dsx1 clock source network-derived
CESwitch(config-if)# ces dsx1 framing esf
CESwitch(config-if)# ces dsx1 linecode b8zs
CESwitch(config-if)# ces circuit 1 timeslots 1-3,7
CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-A
CESwitch(config-if)# ces pvc 1 interface atm 0/1/3 vpi 0 vci 100
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.
To verify the hard PVC configured with structured services, use the following privileged EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows the configuration information for the hard PVC. |
show ces circuit interface cbr card/subcard/port circuit-id | Shows the detailed interface configuration information for the hard PVC. |
The following example shows the details of the hard PVC, shown in Figure 18-3, using the show ces circuit command:
CESwitch# show ces circuit Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/0/0 1 HardPVC ATM0/1/3 0 100 UP
The output from this command verifies the source (CBR 3/0/0) and destination (ATM 0/1/3) port IDs of the hard PVC and indicates that the circuit is up.
The following example shows the interface details for port CBR 3/0/0 (shown in Figure 18-3), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 1 Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/0, 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: 4107, Bit-Rate 1544000 cas OFF, cell_header 0x100 (vci = 16) Configured CDV 2000 usecs, Measured CDV 326 usecs De-jitter: UnderFlow 1, OverFlow 0 ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcAlarm, maxQueueDepth 823, startDequeueDepth 435 Partial Fill: 47, Structured Data Transfer 1 HardPVC Src: CBR3/0/0 vpi 0, vci 16 Dst: ATM0/1/3 vpi 0, vci 100
The output from this command verifies the following configuration information:
This section describes how to configure a hard PVC for structured CES with a shaped VP tunnel, which is a two-phase process, as follows:
For more information about configuring shaped VP tunnels, refer to the section "Configuring VP Tunnels" in the chapter "Configuring Virtual Connections."
Figure 18-4 shows an example of a how a structured CES circuit can be configured with a shaped VP tunnel.
To configure a shaped VP tunnel, follow these steps:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface atm card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| atm connection-traffic-table-row [index row-index] cbr pcr rate | Configures the connection-traffic-table-row for the desired PVP CBR cell rate. | ||
| atm pvp vpi [hierarchical | shaped] | Configures a shaped VP tunnel, as follows:
| ||
| interface atm card/subcard/port.subinterface# | Configures a subinterface. Note You cannot create a subinterface on the route processor interface ATM 0. | ||
| exit | Exits subinterface mode. |
The following example shows how to configure a shaped VP tunnel.
CESwitch#configure terminalCESwitch(config)#interface atm 0/0/0CESwitch(config)#atm connection-traffic-table-row index 10 cbr pcr 4000CESwitch(config-if)#atm pvp 1 shaped rx-cttr 10 tx-cttr 10CESwitch(config-if)#interface atm 0/0/0.1CESwitch(config-subif)#exit
To configure a hard PVC, follow these steps:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces status | Displays information about the current CBR interfaces. Use this command to choose the source CBR port. | ||
| show atm status | Displays information about the current ATM interfaces. Use this command to choose the destination ATM port. Note The interface must be up. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces aal1 service {structured | unstructured} | Configures the CES interface AAL1 service type. | ||
| ces circuit circuit-id [timeslots number] | Configures the following CES connection attributes for the circuit:
| ||
| ces pvc circuit-id interface atm card/subcard/port vpi vpi vci vci | Configures the destination port for the circuit and configures a hard PVC, as follows:
|
The following example shows how to configure hard PVCs for the shaped VP tunnel.
CESwitch# show ces status CESwitch# show atm status CESwitch(config)# interface cbr 3/1/0 CESwitch(config-if)# ces aal1 service structured CESwitch(config-if)# ces circuit 1 timeslots 1 CESwitch(config-if)# ces pvc 1 interface atm 0/0/0.1 vpi 1 vci 101 CESwitch(config-if)# ces circuit 2 timeslots 2 CESwitch(config-if)# ces pvc 2 interface atm 0/0/0.1 vpi 1 vci 102 CESwitch(config-if)# ces circuit 3 timeslots 3 CESwitch(config-if)# ces pvc 3 interface atm 0/0/0.1 vpi 1 vci 103
To verify the hard PVC configuration, use the following privileged EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows configuration information for the hard PVC. |
show ces circuit interface cbr card/subcard/port circuit-id | Shows detailed interface configuration information for the hard PVC. |
The following example shows how to display the basic information about the hard PVC shown in Figure 18-4, using the show ces circuit command:
CESwitch# show ces circuit Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/1/0 1 HardPVC ATM0/0/0.1 1 101 DOWN CBR3/1/0 2 HardPVC ATM0/0/0.1 1 102 DOWN CBR3/1/0 3 HardPVC ATM0/0/0.1 1 103 DOWN CBR3/1/3 0 Active SoftVC UNKNOWN 0 0 DOWN
The following example shows how to display detailed information about the hard PVC shown in Figure 18-4, using the show ces circuit interface cbr 3/1/0 command:
CESwitch# show ces circuit interface cbr 3/1/0 Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/1/0 1 HardPVC ATM0/0/0.1 1 101 DOWN CBR3/1/0 2 HardPVC ATM0/0/0.1 1 102 DOWN CBR3/1/0 3 HardPVC ATM0/0/0.1 1 103 DOWN
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.
The destination address of a soft PVC can point to either of the following:
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 to complete a soft PVC setup.
To obtain the destination address for an already configured port in a CES module, log into the remote ATM switch router containing that module. Then use the show ces address command to display all the CES-IWF ATM addresses currently configured for that node.
This section describes how to configure a soft PVC for structured service based on the following assumptions:
Figure 18-5 shows an example of a soft PVC configured for structured CES.
Configuring a soft PVC for structured CES is a two-phase process:
To configure a destination (passive) side of a soft PVC for structured CES, follow these steps, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces status | Displays information about the current CBR interfaces Use this command to choose the destination port. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces aal1 service {structured | unstructured} | Configures the CES interface AAL1 service type. | ||
| ces dsx1 clock source {loop-timed | network-derived} | Configures the clock source. | ||
|
| Configures the framing type.
| ||
| ces dsx1 linecode {ami | b8zs | hdb3} | Configures the line code type.
| ||
| ces circuit circuit-id timeslots number | Configures the following CES connection attributes for the circuit:
| ||
| ces circuit circuit-id circuit-name name | Configures the CES interface circuit name. |
The following example shows how to configure the destination (passive) side of a soft PVC for structured T1 CES, as shown in Figure 18-5:
CESwitch# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR3/0/0 UP UP T1
CBR3/0/1 UP UP T1
CBR3/0/2 UP UP T1
CBR3/0/3 UP UP T1
CESwitch# configure terminal
CESwitch(config)# interface cbr 3/0/3
CESwitch(config-if)# ces aal1 service structured
CESwitch(config-if)# ces dsx1 clock source network-derived
CESwitch(config-if)# ces dsx1 framing esf
CESwitch(config-if)# ces dsx1 linecode b8zs
CESwitch(config-if)# ces circuit 1 timeslots 10-13
CESwitch(config-if)# ces circuit 1 circuit-name CBR-PVC-B
To configure the source (active) side of a soft PVC for structured CES, follow these steps, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces address | Shows the CES address for the destination end of the circuit. Use this command to retrieve the VPI/VCI of the destination port. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces circuit circuit-id timeslots number | Configures the following CES connection attributes for the circuit:
| ||
| ces circuit circuit-id circuit-name name | Configures the CES interface circuit name. | ||
| ces pvc circuit-id dest-address remote_atm_address vpi vpi vci vci | Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit. Use the VPI/VCI of the destination port that was retrieved in Step 1. |
The following example shows how to configure the source (active) side of a soft PVC for structured CES, as shown in Figure 18-5:
CESwitch#show ces address CES-IWF ATM Address(es): 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 CBR3/0/3:1 vpi 0 vci 3088CESwitch#configure terminalCESwitch(config)#interface cbr 3/0/0CESwitch(config-if)#ces circuit 1 timeslots 1-3, 7CESwitch(config-if)#ces circuit 1 circuit-name CBR-PVC-A CESwitch(config-if)# ces pvc 1 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1034.10 vpi 0 vci 16
If you do not 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 CBR3/0/0:1. For structured circuit emulation services, the circuit number sequence always begins at 1 for each port in a CES module.
To verify the soft PVC configured with structured CES, use the following EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows the configuration information for the soft PVC. |
show ces circuit interface cbr card/subcard/port circuit-id | Shows the detailed interface configuration information for the soft PVC. |
The following example shows the details of the CES circuit (shown in Figure 18-5), using the show ces circuit command:
CESwitch# show ces circuit Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/0/0 1 Active SoftVC ATM-P3/0/3 0 3088 UP CBR3/0/3 1 Passive SoftVC ATM-P3/0/3 0 16 UP
The following example shows the interface details for the source port (CBR 3/0/0) (shown in Figure 18-5), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 1 Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/0, 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: 698, Bit-Rate 256000 cas OFF, cell_header 0x100 (vci = 16) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 45, startDequeueDepth 28 Partial Fill: 47, Structured Data Transfer 98 Active SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10
The following example shows the interface details for the destination port (CBR 3/0/3) (shown in Figure 18-5), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/3 1 Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/3, 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: 698, Bit-Rate 256000 cas OFF, cell_header 0xC100 (vci = 3088) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 45, startDequeueDepth 28 Partial Fill: 47, Structured Data Transfer 98 Passive SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 3088 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
Since the CES T1/E1 port adapter emulates CBR services over ATM networks, it must be able to support channel-associated signalling (CAS) information that is introduced into structured CES circuits by PBXs and TDMs. An optional CAS feature for the CES T1/E1 port adapter meets this requirement.
CAS information carried in a CBR bit stream can be configured with a CES module, as follows:
This section describes how to configure a soft PVC for structured CES with channel-associated signalling (CAS) enabled.
The following procedure is based on the following assumptions:
Figure 18-6 shows a soft PVC configured for structured CES with CAS enabled.
To configure a soft PVC for structured CES with CAS enabled, follow these steps, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces status | Displays information about the current CBR interfaces. Use this command to choose the ports to be configured with CAS enabled. | ||
| configure terminal | At the privileged EXEC mode prompt, enters global configuration mode. | ||
| interface cbr card/subcard/port | Selects the source interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces dsx1 signalmode robbedbit | Configures the signal mode to robbedbit. | ||
| ces circuit circuit-id cas | Enables channel-associated signalling. | ||
| exit | Returns to global configuration mode. | ||
| interface cbr card/subcard/port | Selects the destination interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces dsx1 signalmode robbedbit | Configures the signal mode to robbedbit. | ||
| ces circuit circuit-id cas | Enables channel-associated signalling. |
The following example shows how to enable channel-associated signalling on the soft PVC configured (see Figure 18-6):
CESwitch# show ces status
Interface IF Admin Port Channels in
Name Status Status Type use
------------- -------- --------- ----------- -----------
CBR3/0/0 UP UP T1 1-3,7
CBR3/0/1 DOWN UP T1
CBR3/0/2 DOWN UP T1
CBR3/0/3 UP UP T1 10-13
CESwitch# configure terminal
CESwitch(config)# interface cbr 3/0/0
CESwitch(config-if)# ces dsx1 signalmode robbedbit
CESwitch(config-if)# ces circuit 1 cas
CESwitch(config-if)# exit
CESwitch(config)# interface cbr 3/0/3
CESwitch(config-if)# ces dsx1 signalmode robbedbit
CESwitch(config-if)# ces circuit 1 cas
To verify the soft PVC with structured CES and CAS enabled, use the following EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows the configuration information for the soft PVC. |
show ces circuit interface cbr card/subcard/port circuit-id | Shows the detailed interface configuration information for the soft PVC. |
The following example displays the details of the CES circuit (shown in Figure 18-6), 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 CBR3/0/0 0 Active SoftVC ATM-P3/0/3 0 16 UP CBR3/0/1 0 Passive SoftVC ATM-P3/0/3 0 1040 UP
The following example displays the CAS status for the source port CBR 3/0/0 (shown in Figure 18-6):
CESwitch# show ces circuit interface cbr 3/0/0 1 Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/0, 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: 698, Bit-Rate 256000
cas ON, cell_header 0x100 (vci = 16) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 45, startDequeueDepth 28 Partial Fill: 47, Structured Data Transfer 98 Active SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10
The following example displays the CAS status for the destination port CBR 3/0/3 (shown in Figure 18-6):
CESwitch# show ces circuit interface cbr 3/0/3 1 Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/3, 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: 698, Bit-Rate 256000
cas ON, cell_header 0xC100 (vci = 3088) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 45, startDequeueDepth 28 Partial Fill: 47, Structured Data Transfer 98 Passive SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 3088 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
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 a soft PVC for structured CES with CAS and on-hook detection enabled, follow these steps, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces circuit circuit-id [cas] | Configures channel-associated signalling and on-hook detection on the CES circuit. |
The following example shows how to configure on-hook detection on the soft PVC with structured CES and CAS enabled in the previous section "Configuring a Soft PVC for Structured CES with CAS Enabled" (shown in Figure 18-6):
CESwitch(config)# interface cbr 3/0/0 CESwitch(config-if)# ces circuit 1 cas on-hook-detect 2
To show the on-hook detection configuration of a soft PVC configured with structured CES and CAS enabled, use the following EXEC command:
| Command | Purpose |
|---|---|
show ces circuit interface cbr card/subcard/port circuit-id | Shows the detailed interface configuration information for the soft PVC. |
The following example shows the soft PVC with CAS and on-hook detection enabled as hexadecimal number 2 (shown in Figure 18-6):
CESwitch# show ces circuit interface cbr 3/0/3 1 Circuit: Name CBR-PVC-B, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/3, 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: 698, Bit-Rate 256000
cas ON, cell_header 0xC100 (vci = 3088) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x2 state: VcActive, maxQueueDepth 45, startDequeueDepth 28 Partial Fill: 47, Structured Data Transfer 98 Passive SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 vpi 0, vci 3088 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
This section describes how to create more than one structured soft PVC on the same CES T1/E1 port. Figure 18-7 shows 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 18-6) 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 18-7):
Configuring multiple soft PVCs for structured CES is a two-phase process:
To configure multiple soft PVCs on the destination (passive) side of the same port, follow these steps, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| interface cbr card/subcard/port | Selects the physical interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces aal1 service {structured | unstructured} | Configures the CES interface AAL1 service type. | ||
| ces dsx1 clock source {loop-timed | network-derived} | Configures the clock source. | ||
|
| Configures the framing type.
| ||
| ces dsx1 linecode {ami | b8zs | hdb3} | Configures the line code type.
| ||
| ces circuit circuit-id [circuit-name name] [timeslots number] | Configures the following CES connection attributes for the circuit:
|
The following example shows how to configure multiple soft PVCs on the destination (passive) side of the same port (shown in Figure 18-7):
CESwitch(config)# interface cbr 3/0/2 CESwitch(config-if)# ces aal1 service structured CESwitch(config-if)# ces dsx1 clock source network-derived CESwitch(config-if)# ces dsx1 framing esf CESwitch(config-if)# ces dsx1 linecode b8zs CESwitch(config-if)# ces circuit 2 timeslots 24 circuit-name CBR-PVC-CA
To configure multiple soft PVCs on the source (active) side of the same port, follow these steps, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| interface cbr card/subcard/port | Selects the source interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces circuit circuit-id [circuit-name name] [timeslots number] | Configures the following CES connection attributes for the circuit:
| ||
| end | Exits interface configuration mode. | ||
| show ces address | Shows the CES address for the destination end of the circuit. Use this command to retrieve the VPI/VCI of the destination port. | ||
| configure terminal | At the privileged EXEC prompt, enters configuration mode. | ||
| interface cbr card/subcard/port | Selects the destination interface to be configured. Note If the interface is up, you might have to disable it (using the shutdown command) before you can configure the circuit. After you configure the circuit, run the no shutdown command to reenable the interface. | ||
| ces pvc circuit-id dest-address remote_atm_address | Configures the soft PVC to the destination CES-IWF ATM addresses and VPI/VCI of the circuit. Use the VPI/VCI of the destination port that was retrieved in Step 4. |
The following example shows how to configure multiple soft PVCs on the source (active) side of the same port (shown in Figure 18-7):
CESwitch(config)# interface cbr 3/0/0 CESwitch(config-if)# ces circuit 2 timeslots 24 CESwitch(config-if)# ces circuit 2 circuit-name CBR-PVC-AC 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 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1030.20 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# configure terminal CESwitch(config)# interface cbr 3/0/2 CESwitch(config-if)# ces pvc 2 dest-address 47.0091.8100.0000.0060.5c71.1f01.4000.0c80.1038.10 vpi 0 vci 2064
If you do not 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 CBR3/0/2:1. For structured circuit emulation services, the circuit number sequence always begins at 1 for each port in a CES module.
To verify multiple structured soft PVCs with CAS enabled, use the following EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows the configuration information for the soft PVC. |
show ces address | Shows the CES address for the destination end of the circuit. |
show ces circuit interface cbr card/subcard/port circuit-id | Shows the detailed interface configuration information for the soft PVC. |
The following example displays the circuit details for the soft PVCs that you created in the previous procedure (shown in Figure 18-7) 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 CBR3/0/0 1 Active SoftVC ATM-P3/0/3 0 3088 UP CBR3/0/0 2 Active SoftVC ATM-P3/0/3 0 2080 UP CBR3/0/2 2 Passive SoftVC ATM-P3/0/3 0 32 UP CBR3/0/3 1 Passive SoftVC ATM-P3/0/3 0 16 UP
The following example displays the CES-IWF addresses of the soft PVCs that you configured (shown in Figure 18-7), using the show ces address command in privileged EXEC mode:
CESwitch# show ces address CES-IWF ATM Address(es): 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 CBR3/0/0:1 vpi 0 vci 16 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.20 CBR3/0/0:2 vpi 0 vci 32 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20 CBR3/0/2:2 vpi 0 vci 2080 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10 CBR3/0/3:1 vpi 0 vci 3088
The following example displays the interface details for the new circuit 2 soft PVC that you set up on port CBR 3/0/0 (shown in Figure 18-7), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 2 Circuit: Name CBR-PVC-AC, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/0, 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: 24 Channels used by this circuit: 24 Cell-Rate: 172, Bit-Rate 64000 cas OFF, cell_header 0x200 (vci = 32) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 81, startDequeueDepth 64 Partial Fill: 47, Structured Data Transfer 1 Active SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.20 vpi 0, vci 32 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20
The following example displays the interface details for the new circuit 1 soft PVC that you configured on port CBR3/0/2 (shown in Figure 18-7), using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/2 2 Circuit: Name CBR-PVC-CA, Circuit-state ADMIN_UP / oper-state UP Interface CBR3/0/2, 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: 24 Channels used by this circuit: 24 Cell-Rate: 172, Bit-Rate 64000 cas OFF, cell_header 0x8200 (vci = 2080) Configured CDV 2000 usecs, Measured CDV unavailable De-jitter: UnderFlow unavailable, OverFlow unavailable ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0 state: VcActive, maxQueueDepth 81, startDequeueDepth 64 Partial Fill: 47, Structured Data Transfer 1 Passive SoftVC Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8038.20 vpi 0, vci 2080 Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
Once you have configured a circuit, you cannot change the circuit's configuration while the circuit is up. You must first bring the interface down. Then you can change the circuit's configuration. After entering these configuration changes, you must bring the interface back up. To change an enabled circuit's configuration, follow these steps:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| interface cbr card/subcard/port | Selects the physical interface to be configured. | ||
| shutdown | Disables the CES interface. | ||
| Enter the command for the configuration parameter to be changed. For example, to specify the clock source as network-derived and to change the AAL1 clocking mode from adaptive to synchronous, enter: ces dsx1 clock source network-derived ces aal1 clock synchronous | Configures the clock source as network-derived and reconfigures the AAL1 clock mode to synchronous. | ||
| no shutdown | Enables the CES interface. | ||
| show ces circuit interface cbr card/subcard/port circuit-id | Shows detailed interface configuration information for the circuit. Use this command to verify your configuration changes. |
The following example disables interface cbr 3/0/0, specifies the clock source as network-derived, changes the AAL1 clocking method to synchronous, and reenables the interface.
CESwitch# interface cbr 3/0/0 CESwitch#(config-if)# shutdown CESwitch#(config-if)# ces dsx1 clock source network-derived CESwitch#(config-if)# ces aal1 clock synchronous CESwitch#(config-if)# no shutdown
The following example displays the changed configuration information for the circuit, using the show ces circuit interface cbr command:
CESwitch# show ces circuit interface cbr 3/0/0 0 Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / Interface CBR3/0/0, 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: CBR3/0/0 vpi 0, vci 16 Dst: ATM0/1/3 vpi 0, vci 100
The output from this command verifies the following configuration information:
This section describes how to delete a previously established circuit.
To delete a previously established circuit, follow these steps, beginning in privileged EXEC mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| show ces circuit | Shows the configuration information for the circuit. | ||
| configure terminal | At the privileged EXEC prompt, enters global configuration mode from the terminal. | ||
| interface cbr card/subcard/port | Selects the physical interface where the circuit is to be deleted. | ||
| no ces circuit circuit-id | Deletes the CES circuit. | ||
| interface cbr card/subcard/port | Selects the other physical interface where the circuit is to be deleted. | ||
| no ces circuit circuit-id | Deletes the other end of CES circuit. |
The following example shows how to delete a previously established circuit:
CESwitch# show ces circuit Interface Circuit Circuit-Type X-interface X-vpi X-vci Status CBR3/0/0 0 HardPVC ATM0/0 0 100 UP CBR3/0/3 0 HardPVC ATM0/0 0 101 UP CESwitch# configure terminal CESwitch(config)# interface cbr 3/0/0 CESwitch(config-if)# no ces circuit 0 CESwitch(config-if)# exit CESwitch(config)# interface cbr 3/0/3 CESwitch(config-if)# no ces circuit 0
To verify the deletion of a previously configured circuit, use the following privileged EXEC commands:
| Command | Purpose |
|---|---|
show ces circuit | Shows the configuration information for the circuit. |
show ces address | Shows the configuration information for any CES addresses. |
The following example displays the configuration of any CES 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 addresses:
CESwitch# show ces address CES-IWF ATM Address(es):
The absence of output verifies that all CES circuits are deleted.
For overview information about configuring the SCGP feature, refer to the Guide to ATM Technology.
The network operator can globally enable or disable SGCP operation for the switch. By default, SGCP is disabled. When SGCP is enabled, the ATM switch router begins listening on the well-known User Datagram Protocol (UDP) port for SGCP packets. The endpoint ID in an SGCP packet identifies the CES circuit. The CES circuit endpoint can be used by SGCP if the following conditions exist:
The following sections describe SGCP configuration tasks:
To enable SGCP operations for the entire switch, use the following global configuration command:
| Command | Purpose |
|---|---|
Enables or disables SGCP operations for the entire switch. |
The following example shows how to enable SGCP for the entire switch:
Switch(config)# sgcp
To display SGCP configuration, operational state, and a summary of connection activity, use the following privileged EXEC command:
| Command | Purpose |
|---|---|
Displays the global SGCP configuration. |
The following example displays the SGCP configuration:
Switch# show sgcp SGCP Admin State ACTIVE, Oper State ACTIVE SGCP call-agent:none , SGCP graceful-shutdown enabled? FALSE SGCP request timeout 2000, SGCP request retries 6 74 CES endpoint connections created 74 CES endpoints in active connections
Any single time slot (64 Kbps) allocated to a circuit on a CES T1/E1 interface can be configured for SGCP with these restrictions:
When you configure a CES circuit for SGCP, signalling should be given the proper time slot. For T1 CES circuits, a time slot can be given a number from 1 to 24; for E1 CES, a number from 1 to 31.
Although no keyword identifies a CES circuit as allocatable by SGCP, there is normally a simple configuration rule to ensure that signalling allocates the proper time slot:
To configure SGCP operation on a CES circuit interface, follow these steps, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| interface cbr card/subcard/port | Selects the physical interface to be configured. | ||
| ces aal1 service structured | Configures the AAL1 service type. | ||
| ces circuit circuit-id timeslot number | Allocates a time slot number to the circuit identifier. |
The following example shows how to configure the CES port for structured CES with all time slots available for SGCP. CES circuit 16 is configured for common channel signalling and specified as a soft PVC to a circuit on the CES port adapter connected to the call-agent.
Switch(config)# interface cbr 1/1/2 Switch(config-if)# ces aal1 service structured Switch(config-if)# ces circuit 1 timeslot 1 Switch(config-if)# ces circuit 2 timeslot 2 Switch(config-if)# ces circuit 3 timeslot 3 Switch(config-if)# ces circuit 4 timeslot 4 Switch(config-if)# ces circuit 5 timeslot 5 Switch(config-if)# ces circuit 6 timeslot 6 Switch(config-if)# ces circuit 7 timeslot 7 Switch(config-if)# ces circuit 8 timeslot 8 Switch(config-if)# ces circuit 9 timeslot 9 Switch(config-if)# ces circuit 10 timeslot 10 Switch(config-if)# ces circuit 11 timeslot 11 Switch(config-if)# ces circuit 12 timeslot 12 Switch(config-if)# ces circuit 13 timeslot 13 Switch(config-if)# ces circuit 14 timeslot 14 Switch(config-if)# ces circuit 15 timeslot 15 Switch(config-if)# ces circuit 16 timeslot 16 Switch(config-if)# ces pvc 16 dest-address 47.0091.8100.0000.0060.3e64.fd01.4000.0c80.1038.10 vpi 0 vci 2064 Switch(config-if)# ces circuit 17 timeslot 17 Switch(config-if)# ces circuit 18 timeslot 18 Switch(config-if)# ces circuit 19 timeslot 19 Switch(config-if)# ces circuit 20 timeslot 20 Switch(config-if)# ces circuit 21 timeslot 21 Switch(config-if)# ces circuit 22 timeslot 22 Switch(config-if)# ces circuit 23 timeslot 23 Switch(config-if)# ces circuit 24 timeslot 24 Switch(config-if)# end
SGCP endpoints are all the CES circuits that might be eligible for SGCP connections. To display SGCP endpoints, use the following EXEC command:
| Command | Purpose |
|---|---|
show sgcp endpoint [interface cbr card/subcard/port [circuit-id]] | Displays the SGCP endpoints. |
The following example displays the possible SGCP endpoints on CES interface CBR 1/1/0:
Switch> show sgcp endpoint interface cbr 1/1/0 Endpt Timeslots Conn State Call ID CBR1.1.0/1 1 no connection CBR1.1.0/2 1 no connection CBR1.1.0/3 1 no connection CBR1.1.0/4 1 no connection CBR1.1.0/5 1 no connection CBR1.1.0/6 1 no connection CBR1.1.0/7 1 no connection CBR1.1.0/8 1 no connection CBR1.1.0/9 1 no connection CBR1.1.0/10 1 no connection CBR1.1.0/11 1 active CBR1.1.0/12 1 no connection CBR1.1.0/14 1 active 1234abc CBR1.1.0/15 1 active 2234abc CBR1.1.0/16 1 active 3234abc CBR1.1.0/17 1 active 4234abc CBR1.1.0/18 1 active 5234abc CBR1.1.0/19 1 active 6234abc CBR1.1.0/20 1 active 7234abc CBR1.1.0/21 1 active 8234abc CBR1.1.0/22 1 active 9234abc CBR1.1.0/23 1 active a234abc CBR1.1.0/24 1 active b234abc
To display SGCP connections (either globally or per single interface), use the following EXEC command:
| Command | Purpose |
|---|---|
show sgcp connection [interface cbr card/subcard/port] | Displays the SGCP connections. |
The following example displays all SGCP connections created on the ATM switch router:
Switch> show sgcp connection Conn Endpt Soft VC State Call Id CBR0.0.0/1 Dest- active VC d234ab CBR0.0.0/2 Dest- active VC 12345bc CBR0.0.0/3 Dest- active VC 1284ab CBR0.0.0/4 Dest- active VC 9234abc
When the ATM switch router initiates an SGCP request (for example, to disconnect the circuit), default request timer and request retry values are in operation. To change the default value of SGCP requests, use the global configuration commands, as shown in the following table:
| Command | Purpose |
|---|---|
sgcp request timeout msecs | Configures the SGCP request timeout value. |
sgcp request retries number | Configures the SGCP request retry value. |
The following example shows how to change the request timeout to 2000 milliseconds:
Switch(config)# sgcp request timeout 2000
The following example shows how to change the request retry value to 5:
Switch(config)# sgcp request retries 5
By default the SGCP call agents perform the following tasks:
To alter this behavior, and send responses and requests to a specific IP address and UDP port, use the following global configuration command:
| Command | Purpose |
|---|---|
sgcp call-agent ip-address udp-port | Configures the call-agent IP address and UDP port. |
The following example shows how to set the call-agent with IP address 133.20.5.122 and
UDP port 12000:
Switch(config)# sgcp call-agent 133.20.5.122 12000
When SGCP is disabled with the no sgcp command, active SGCP connections are terminated; however DeleteConnection requests are not sent to the call-agent for these active connections.
To notify call-agent and perform a graceful SGCP shutdown, use the following global configuration command:
| Command | Purpose |
|---|---|
Shuts down SGCP and notifies call-agent. |
The following example shows how to perform a graceful shutdown:
Switch(config)# sgcp graceful-shutdown
Posted: Mon May 8 18:18:30 PDT 2000
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