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This chapter explains the function and syntax of the ATM commands: atm txbuff through network-clock-select. For more information about defaults and usage guidelines, see the corresponding chapter of the Cisco IOS Wide-Area Networking Command Reference, Release 12.1.
To set the maximum number of transmit buffers for simultaneous packet fragmentation, use the atm txbuff interface configuration command. To restore the default value, use the no form of this command.
atm txbuff number
Syntax Description
number Maximum number of packet fragmentations that the AIP can perform simultaneously, from 0 to 512.
To specify the User-Network Interface (UNI) version (3.0 or 3.1) the router should use when Interim Local Management Interface (ILMI) link autodetermination is unsuccessful or ILMI is disabled, use the atm uni-version interface configuration command. To restore the default value to 3.0, use the no form of this command.
atm uni-version version-number
Syntax Description
version-number UNI version selected on an interface. Valid values are 3.0 and 3.1.
To set the maximum number of virtual channel identifier (VCIs) to support per virtual path identifier (VPI), use the atm vc-per-vp interface configuration command. To restore the default value, use the no form of this command.
atm vc-per-vp number
Syntax Description
number Maximum number of VCIs to support per VPI. On the AIP for Cisco 7500 series routers, valid values are: 16, 32, 64, 128, 256, 512, or 1024. On the ATM port adapter for Cisco 7200 series and Cisco 7500 series routers, valid values are: 16, 32, 64, 128, 256, 512, 1024, or 2048. On the NPM for Cisco 4500 and Cisco 4700 routers, valid values are: 32, 64, 128, 256, 512, 1024, 2048, 4096, or 8192.
To set the ATM Interface Processor (AIP) filter register, use the atm vp-filter interface configuration command. To restore the default value, use the no form of this command.
atm vp-filter hexvalue
Syntax Description
hexvalue Value in hexadecimal format.
To configure broadcast packet duplication and transmission for an ATM virtual circuit (VC) class, permanent virtual circuit (PVC), switched virtual circuit (SVC), or VC bundle, use the broadcast command in the appropriate command mode. To disable transmission of broadcast packets for your ATM VC class, PVC, SVC, or VC bundle, use the no form of this command. To restore the default behavior, use the default form of this command.
broadcastSyntax Description
This command has no arguments or keywords.
To configure the ATM adaptation layer 1 (AAL1) timing recovery clock for the constant bit rate (CBR) interface, use the ces aal1 clock interface configuration command. To return the clock to the default, use the no form of this command.
ces aal1 clock {adaptive | srts | synchronous}
Syntax Description
adaptive Adjusts output clock on a received AAL1 on first-in, first-out basis. Use in unstructured mode. srts Sets the clocking mode to synchronous residual time stamp. synchronous Configures the timing recovery to synchronous for structured mode.
To configure the type of circuit emulation service used on the constant bit rate (CBR) interface, use the ces aal1 service interface configuration command. To return the type of service to unstructured, use the no form of the command.
ces aal1 service {structured | unstructured}
Syntax Description
structured Sets the type of service to structured (cross-connect). unstructured Sets the type of service to unstructured (clear-channel).
To configure the connection attributes for the constant bit rate (CBR) interface, use the ces circuit interface configuration command. To return the connection attributes to the default or to enable the circuit, use the no form of this command.
ces circuit circuit-number [cas] [cdv range] [circuit-name name] [on-hook-detection hex-number] [partial-fill range] [shutdown] [timeslots range]
Syntax Description
circuit-number Selects the circuit identification. For unstructured service, use 0. For T1 structured service, the range is 1 through 24. For E1 structure service, the range is 1 through 31. cas (Optional) Enables channel-associated signalling for structured service only. The default is no cas. cdv range (Optional) Enables the peak-to-peak cell delay variation requirement. The range for CDV is 1 through 65535 milliseconds. The default is 2000 milliseconds. circuit-name name (Optional) Sets the ASCII name for the CES-IWF circuit. The string for the circuit name is 0 through 255. The default is CBRx/x:0. on-hook-detection hex-number (Optional) Enables detection of whether the circuit is on-hook. Hex values are 0 through F to indicate a 2- or 4-bit AB[CD] pattern to detect on-hook. The AB[CD] bits are determined by the manufacturer of the voice/video telephony device that is generating the CBR traffic. partial-fill range (Optional) Enables the partial AAL1 cell fill service for structured service only. The range is 0 through 47. The default is 47. shutdown (Optional) Marks the CES-IWF circuit administratively down. The default is no shutdown. timeslots range (Optional) Configures the time slots for the CES-IWF circuit for structured service only. The range is 1 through 24 for T1. The range is 1 through 31 for E1.
To configure a transmit clock source for the constant bit rate (CBR) interface, use the ces dsx1 clock source interface configuration command. To return the clock source to the default, use the no form of this command.
ces dsx1 clock source {loop-timed | network-derived}
Syntax Description
loop-timed Configures the transmit clock to loop (RX-clock to TX-clock). network-derived Configures the transmit clock to be derived from the network.
To select the frame type for the data line on the constant bit rate (CBR) interface, use the ces dsx1 framing interface configuration command. To return the frame type to the default, use the no form of this command.
T1
ces dsx1 framing {esf | sf}
no ces dsx1 framing
E1
ces dsx1 framing {e1_crc_mfCASlt | e1_crc_mf_lt | e1_lt | e1_mfCAS_lt}
no ces dsx1 framing
Syntax Description
esf Configures the line type to extended super frame for T1. sf Configures the line type to super frame for T1. e1_crc_mfCASlt Configures the line type to E1 CRC with channel-associated signalling (CAS) enabled. e1_crc_mf_lt Configures the line type to E1 CRC with CAS disabled. e1_lt Configures the line type to E1 with CAS disabled. e1_mfCAS_lt Configures the line type to E1 with CAS enabled.
To configure cable length for the constant bit rate (CBR) interface, use the ces dsx1 lbo interface configuration command. To return the cable length to the default, use the no form of this command.
ces dsx1 lbo length
Syntax Description
length Sets the cable length. Values are (in feet): 0_110, 110_200, 220_330, 330_440, 440_550, 550_660, 660_above, and square_pulse.
To select the line code type for the constant bit rate (CBR) interface, use the ces dsx1 linecode interface configuration command. To return the line code to the default, use the no form of this command.
T1
ces dsx1 linecode {ami | b8zs}
no ces dsx1 linecode
E1
ces dsx1 linecode {ami | hdb3}
no ces dsx1 linecode
Syntax Description
ami Specifies the alternate mark inversion (AMI) as the line code type. Valid for T1 and E1 interfaces. b8zs Specifies B8ZS as the line code type. Valid for T1 interfaces. This is the default for T1. hdb3 Specifies HDB3 as the line code type. Valid for E1 interfaces. This is the default for E1.
To enable a loopback for the constant bit rate (CBR) interface, use the ces dsx1 loopback interface configuration command. To disable the loopback, use the no form of this command.
ces dsx1 loopback {line | noloop | payload}
Syntax Description
line Sets the received signal to be looped at the line (does not penetrate the line). noloop Sets the interface to no loop. payload Sets the received signal to be looped through the device and returned.
To enable the signal mode as robbed bit on a constant bit rate (CBR) interface, use the ces dsx1 signalmode robbedbit interface configuration command. To return the signal mode to the default, use the no form of this command.
ces dsx1 signalmode robbedbitSyntax Description
This command has no arguments or keywords.
To configure the destination port for the circuit on the constant bit rate (CBR) interface, use the ces pvc interface configuration command. To remove the destination port on the circuit, use the no form of this command.
ces pvc circuit-number interface atm slot/port vpi number vci number
Syntax Description
circuit-number Selects the circuit identification. The range is 0 to 24. For unstructured service, use 0. For T1 structure service, the range is 1 through 24. For E1 structure service, the range is 1 through 31. interface atm slot/port Slot and port number of the ATM interface. Used to create a hard PVC. Only a hard PVC can be configured for the CBR interfaces on the ATM-CES port adapter. vpi number Virtual path identifier of the destination PVC. Range is 0 through 255. vci number Virtual channel identifier of the destination PVC. Range is 1 through 16383.
Syntax Description
vc-class-name Name of the VC class that you are assigning to your ATM main interface or subinterface.
To assign a virtual circuit (VC) class to an ATM permanent virtual circuit (PVC), switched virtual circuit (SVC), or VC bundle member, use the class-vc command in the appropriate configuration mode. To remove a VC class, use the no form of this command.
class-vc vc-class-name
Syntax Description
vc-class-name Name of the VC class that you are assigning to your ATM PVC, SVC, or VC bundle member.
To map a protocol address to a given virtual path identifier (VPI) and virtual channel identifier (VCI), use the dxi map interface configuration command. To remove the mapping for that protocol and protocol address, use the no form of this command.
dxi map protocol protocol-address vpi vci [broadcast]
Syntax Description
To configure multiprotocol or single protocol ATM-Data Exchange Interface (DXI) encapsulation, use the dxi pvc interface configuration command. To disable multiprotocol ATM-DXI encapsulation, use the no form of this command.
dxi pvc vpi vci [snap | nlpid | mux]
Syntax Description
vpi ATM network virtual path identifier (VPI) of this PVC, in the range from 0 through 255. The VPI is an 8-bit field in the header of the ATM cell. The VPI value is unique only on a single interface, not throughout the ATM network, because it has local significance only. Both vpi and vci cannot be specified as 0; if one is 0, the other cannot be 0. vci ATM network virtual channel identifier (VCI) of this PVC, in the range of 0 through 65535. The VCI is a 16-bit field in the header of the ATM cell. The VCI value is unique only on a single interface, not throughout the ATM network, because it has local significance only. Both vpi and vci cannot be specified as 0; if one is 0, the other cannot be 0. snap (Optional) LLC/SNAP encapsulation based on the protocol used in the packet. This keyword defines a PVC that can carry multiple network protocols. This is the default. nlpid (Optional) RFC 1294/1490 encapsulation. This option is provided for backward compatibility with the default encapsulation in earlier versions of the Cisco IOS software. mux (Optional) MUX encapsulation; the carried protocol is defined by the dxi map command when the PVC is set up. This keyword defines a PVC that carries only one network protocol.
To configure the ATM adaptation layer (AAL) and encapsulation type for an ATM permanent virtual circuit (PVC), switched virtual circuit (SVC), virtual circuit (VC) class, or VC bundle, use the encapsulation aal5 command in the appropriate command mode. To remove an encapsulation from a PVC, SVC, VC class, or VC bundle, use the no form of this command.
encapsulation aal5encap [virtual-template number]
Syntax Description
encap AAL and encapsulation type. When mux is specified, a protocol is required. Possible values for the aal-encap argument are as follows: ciscoppp---For Cisco Point-to-Point Protocol (PPP) over ATM. Supported on ATM PVCs only. mux apollo---For a multiplex (MUX)-type VC using the Apollo protocol. mux appletalk---For a MUX-type VC using the AppleTalk mux decnet---For a MUX-type VC using the DECnet protocol. mux frame---For a MUX-type VC for Frame Relay-ATM Internetworking on the Cisco MC3810 router. mux frame-relay---For a MUX-type virtual circuit for Frame Relay-ATM Network Interworking (FRF.5) on the Cisco MC3810. mux fr-atm-srv---For a MUX-type virtual circuit for Frame Relay-ATM Service Interworking (FRF.8) on the Cisco MC3810. mux ip---For a MUX-type VC using the IP protocol. mux ipx---For a MUX-type VC using the IPX mux ppp---For a MUX-type virtual circuit running IETF-Compliant PPP over ATM. You must use the virtual-template number argument to identify the virtual template. (If you need to establish a virtual template, use the interface virtual-template command.) mux vines---For a MUX-type VC using the VINES protocol. mux voice---For a MUX-type VC for Voice over ATM on the Cisco MC3810 router.
protocol.
protocol.
To enable ATM-Data Exchange Interface (DXI) encapsulation, use the encapsulation atm-dxi interface configuration command. To disable ATM-DXI, use the no form of this command.
encapsulation atm-dxiSyntax Description
This command has no arguments or keywords.
To configure the idle timeout parameter for tearing down an ATM switched virtual circuit (SVC) connection, use the idle-timeout command in the appropriate command mode. To disable the timeout parameter, use the no form of this command.
idle-timeout seconds [minimum-rate]
Syntax Description
seconds Number of seconds that the SVC is idle, after which the ATM SVC is disconnected. minimum-rate (Optional) Minimum traffic rate in kilobits per second (kbps) required on an ATM SVC to maintain the SVC connection.
To enable Integrated Local Management Interface (ILMI) management on an ATM permanent virtual circuit (PVC), use the ilmi manage command in the appropriate command mode. To disable ILMI management, use the no form of this command.
ilmi manageSyntax Description
This command has no arguments or keywords.
To set the minimum number of links that must be operating in order for an ATM inverse multiplexing over ATM (IMA) group to remain in service, use the ima active-links-minimum interface configuration command. To remove the current configuration and set the value to the default, use the no form of the command.
ima active-links-minimum number
Syntax Description
number Value from 1 to 8.
To set the transmit clock mode for an ATM inverse multiplexing over ATM (IMA) group, use the ima clock-mode interface configuration command. To remove the current configuration, use the no form of the command.
ima clock-mode {common port | independent}
Syntax Description
common The transmit clocks for all the links in the group are derived from the same source. port When you choose a common clock source, also specify the link that will provide clocking for the IMA group, which is called the common link. If the common link fails, the system automatically chooses one of the remaining active links to provide clocking. independent The transmit clock source for at least one link in the IMA group is different from the clock source used by the other links.
To specify the maximum differential delay among the active links in an inverse multiplexing over ATM (IMA) group, use the ima differential-delay-maximum interface configuration command. To restore the default setting, use the no form of the command.
ima differential-delay-maximum msec
Syntax Description
msec Value from 25 to 200 to define the differential delay in milliseconds (ms).
To define physical links as inverse multiplexing over ATM (IMA) group members, use the ima-group interface configuration command for each group member. To remove the port from the group, use the no form of the command.
ima-group group-number
Syntax Description
group-number IMA group number from 0 to 3. IMA groups can span multiple ports on a network module but cannot span network modules.
To specify an interface and test pattern for verifying connectivity of all links in an IMA group, use the ima test interface configuration command. To stop the test, use the no form of the command.
ima test [link port] [pattern pattern-id]
Syntax Description
link port (Optional) The identifier for the interface where physical link is located. pattern pattern-id (Optional) A value from 0 to 254, set in hexadecimal or decimal numbers, identifies a pattern to be sent to the far end of the link.
To configure the Inverse Address Resolution Protocol (ARP) time period for an ATM permanent virtual circuit (PVC), virtual circuit (VC) class, or VC bundle, use the inarp command in the appropriate command mode. To store the default Inverse ARP time period behavior, use the no form of this command.
inarp minutes
Syntax Description
minutes Number of minutes for the Inverse ARP time period.
To configure an ATM interface type and enter interface configuration mode, use the interface atm global configuration command.
Cisco 7500 series with AIP; Cisco 7200 series with ATM, ATM-CES, and enhanced ATM port adapters; Cisco 2600 and 3600 series with 1-port ATM-25 network module
interface atm slot/0
Cisco 7500 series with ATM and enhanced ATM port adapter
interface atm slot/port-adapter/0
Cisco 4500 and 4700 series with NPM
interface atm number
Cisco 2600 and 3600 series
interface atm slot/port
To configure an ATM subinterface, use the interface atm global configuration command.
Cisco 7500 series with AIP; Cisco 7200 series with ATM, ATM-CES, and enhanced ATM port adapters; Cisco 2600 and 3600 series with 1-port ATM-25 network module
interface atm slot/0 subinterface-number {multipoint | point-to-point}
Cisco 7500 series with ATM and enhanced ATM port adapter
interface atm slot/port-adapter/0.subinterface-number {multipoint | point-to-point}
Cisco 4500 and 4700 series with NPM
interface atm number.subinterface-number {multipoint | point-to-point}
Cisco 2600 and 3600 series
interface atm slot/port.subinterface-number {multipoint | point-to-point}
Syntax Description
To configure an ATM inverse multiplexing over ATM (IMA) group, use the interface atm ima global configuration command. To remove the IMA group from the specified interface and remove all configurations and connections for the IMA group, use the no form of the command.
interface atm slot/imagroup-number
Syntax Description
slot Slot location of the ATM IMA network module. The values range from 0 to 3 depending on the router. group-number IMA group number from 0 to 3. You can create up to four groups. Do not include a space before the group number.
To specify the T1 or E1 constant bit rate interface on an ATM-CES port adapter and use interface configuration mode, use the interface cbr global configuration command.
interface cbr slot/port
Syntax Description
slot Backplane slot number. port Interface port number.
To loop packets back to the interface for testing, use the loopback interface configuration command with or without an optional keyword. To remove the loopback, use the no form of the command.
loopback [line | local | payload | remote]
Syntax Description
line (Optional) Places the interface into external loopback mode at the line. local (Optional) Places the interface into local loopback mode. payload (Optional) Places the interface into external loopback mode at the payload level. remote (Optional) Keeps the local end of the connection in remote loopback mode.
To configure the ATM interface into loopback mode, use the loopback interface configuration command. To remove the loopback, use the no form of this command.
loopback [cell | line | payload]
Syntax Description
cell (Optional) Places the interface into external loopback at cell level. line (Optional) Places the interface into external loopback at the line. payload (Optional) Places the interface into external loopback at the payload level.
To set the range of message identifier (MID) values on a permanent virtual circuit (PVC), use the mid interface-ATM-VC configuration command. To remove MID value range settings, use the no form of this command.
mid midlow midhigh
Syntax Description
midlow Starting MID number for this PVC. This can be set between 0 and 1023. midhigh Ending MID number for this PVC. This can be set between 0 and 1023.
To establish the sources and priorities of the requisite clocking signals for an ATM-CES port adapter, use the network-clock-select global configuration command. To remove the clock source, use the no form of this command.
network-clock-select priority {cbr | atm} slot/port
Syntax Description
priority Priority of the clock source. Values are 1 (high priority) to 4 (low priority). cbr CBR interface to supply the clock source. atm ATM interface to supply the clock source. slot Backplane slot number. port Interface port number.
Posted: Wed Jul 26 17:16:01 PDT 2000
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