ATM Switch Router Command Reference, 12.0(13)W5(19) through 12.0(22)W5(25)
ATM Commands

Table of Contents

ATM Commands
atm abr-mode (Catalyst 8510 MSR and LightStream 1010)
atm access-group
atm accounting (interface)
atm accounting collection
atm accounting enable
atm accounting file
atm accounting selection
atm accounting trap threshold
atm address
atm address-registration
atm aesa gateway
atm arp-server
atm auto-configuration
atm backward-max-burst-size-clp0
atm backward-max-burst-size-clp1
atm backward-peak-cell-rate-clp0
atm backward-peak-cell-rate-clp1
atm backward-sustainable-cell-rate-clp0
atm backward-sustainable-cell-rate-clp1
atm cac best-effort-limit
atm cac framing overhead
atm cac link-sharing
atm cac max-cdvt
atm cac max-mbs
atm cac max-min-cell-rate
atm cac max-peak-cell-rate
atm cac max-sustained-cell-rate
atm cac overbooking
atm cac service-category
atm cdvt-default
atm connection-traffic-table-row
atm e164 address
atm e164 auto-conversion
atm e164 translation
atm e164 translation-table
atm esi-address
atm filter-expr
atm filter-set
atm forward-max-burst-size-clp0
atm forward-max-burst-size-clp1
atm forward-peak-cell-rate-clp0
atm forward-peak-cell-rate-clp1
atm forward-sustainable-cell-rate-clp0
atm forward-sustainable-cell-rate-clp1
atm idle-timeout
atm iisp
atm ilmi default-access permit
atm ilmi-enable
atm ilmi-keepalive
atm interface-group
atm lecs-address
atm lecs-address-default
atm link-distance
atm manual-well-known-vc
atm maxvc-number
atm maxvci-bits
atm maxvp-number
atm maxvpi-bits
atm mbs-default
atm nni
atm nsap-address
atm nsap (map-list)
atm oam (global)
atm oam (interface)
atm output-queue (Catalyst 8510 MSR and LightStream 1010)
atm output-threshold (Catalyst 8510 MSR and LightStream 1010)
atm over-subscription-factor (Catalyst 8510 MSR and LightStream 1010)
atm pacing
atm pnni admin-weight
atm pnni aggregation-token
atm pnni explicit-path
atm pnni link-selection
atm pnni mobile
atm pnni node
atm pnni nodal-hierarchy-list highest-level
atm prefix
atm pvc
atm pvp
atm qos default
atm rmon collect
atm rmon enable
atm rmon portselgrp
atm route
atm route-optimization (EXEC)
atm route-optimization (interface)
atm route-optimization percentage-threshold
atm router pnni
atm routing-mode
atm service-category-limit (Catalyst 8510 MSR and LightStream 1010)
atm service-class
atm signalling cug access
atm signalling cug alias
atm signalling cug assign
atm signalling diagnostics
atm signalling enable
atm signalling ie aal5 mode
atm signalling ie forward
atm signalling vpci
atm snoop
atm snoop-vc
atm snoop-vp
atm soft-vc
atm soft-vp
atm sustained-cell-rate-margin-factor
atm svcc vci min
atm svcc vpi max
atm svpc vpi max
atm threshold-group discard-threshold
atm threshold-group marking-threshold
atm threshold-group max-cells
atm threshold-group max-queue-limit
atm threshold-group min-queue-limit
atm threshold-group name
atm threshold-group service
atm-vc

ATM Commands


The commands shown in this chapter apply to the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. Where an entire command or certain attributes of a command have values specific to a particular switch or switch router, an exception is indicated by the following callouts:

  • Catalyst 8540 MSR
  • Catalyst 8510 MSR and LightStream 1010

  • Note   Commands that are identical to those documented in the Cisco IOS software documentation have been removed from this chapter.


    Note   Commands that no longer function as expected in ATM environments have also been removed from this chapter.

Refer to Appendix D of this command reference for a detailed list of commands that have been removed, changed or replaced.

atm abr-mode (Catalyst 8510 MSR and LightStream 1010)

To select efci marking, relative-rate marking, or both, use the atm abr-mode global configuration command on ABR connections. To assign the default value to ABR mode, use the no form of this command.

atm abr-mode {efci | relative-rate | all}
no atm abr-mode

Syntax Description

efci

When cells arrive on ABR connections to a congested (as indicated by the efci threshold) output queue on the interface, the efci bit in the cell header is set.

relative-rate

When a backward RM cell is received on an ABR connection on an interface (from outside the switch), its congestion bit is set if the forward-direction interface is congested (as indicated by the abr relative-rate threshold).

all

Indicates both efci and relative-rate modes of congestion notification.

Defaults

relative-rate

Command Modes

Global configuration

Command History

Release  Modification 

11.1(4)

New command

12.0(3c)W5(9)

Modified: (Catalyst 8510 MSR and LightStream 1010) added

Usage Guidelines

This configuration command changes the global type of notification used on ABR connections to send a congestion alert to the end stations. This change can be made if the switch connects to a network or end station that uses the new technique. The use of all causes both efci and relative-rate marking to be used.

Examples

In the following example, the ABR mode of the switch is set to efci.

Switch(config)# atm abr-mode efci

Related Commands

Command  Description 

show atm resource

Displays global resource manager configuration and status.

atm access-group

To subscribe an interface or subinterface to an existing ATM address pattern-matching filter expression, use the atm access-group interface configuration command. To delete an address access filter subscription on a specified interface of subinterface, use the no form of this command.

atm access-group name [in | out]
no atm access-group name [in | out]

Syntax Description

name

The filter expression or filter set.

in

Specifies that the filter should be applied to an incoming SETUP message.

out

Specifies that the filter should be applied to an outgoing SETUP message.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Release  Modification 

11.1(4)

New command

Usage Guidelines

This command affects ATM signalling SETUP requests received or transmitted by the switch on an interface.

You should use the atm filter-set command prior to using this command. For descriptions of filter sets and expressions, see the atm filter-expr, and atm filter-set global configuration commands.

Each interface has only one access group. If you create a new access group, it overrides any existing group.

Examples

The following is sample output from the atm access-group command.

Switch(config-if)# atm access-group atm_filter_expr1 in
Switch(config-if)# atm access-group atm_filter_expr2 out

Related Commands

Command  Description 

atm filter-expr

Configures an ATM address filter that matches patterns.

atm filter-set

Creates an ATM address filter set.

show atm filter-expr

Displays a specific ATM filter expression or a summary ATM filter expression.

show atm filter-set

Displays a specific ATM filter set or a summary ATM filter set.

atm accounting (interface)

To enable ATM accounting on a specific interface, use the atm accounting interface configuration command. To disable ATM accounting on a specific interface, use the no form of the command.

atm accounting
no atm accounting

Syntax Description

This command has no keywords or arguments.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Release  Modification 

11.2(5)

New command

Usage Guidelines

When accounting is disabled for an interface, accounting stops keeping track of the VCs on that interface and treats the interface as if it were shut down. For the VCs that satisfy the selection criteria, accounting writes records to the active file; however, the VCs are not affected.

Use the show atm accounting EXEC command to determine which interfaces are using ATM accounting.

Examples

The following example shows how to enable ATM accounting on interface ATM 1/0/0.

Switch(config)# interface atm 1/0/0
Switch(config-if)# atm accounting

Related Commands

Command  Description 

interface

Configures an interface type and enters interface configuration mode.

atm accounting collection

To control collection of ATM accounting data into a specific file, use the atm accounting collection EXEC command.

atm accounting collection {collect-now | swap} filename

Syntax Description

collect-now

Immediately captures ATM accounting information for all connections that meet the min-age criteria.

swap

Stops the data collection in the active file and activates the passive file so it collects data. The new passive file is now available for downloading.

filename

Specifies the name for the ATM accounting file.

Command Modes

Privileged EXEC

Command History

Release  Modification 

11.2(5)

New command

Usage Guidelines

Use the collect-now option to return a message with the number of records that were written.

Use the swap option to return a message with the number of records that were written.

Use the show atm accounting EXEC command to show the active and ready file sizes and the number of records.

Examples

The following example shows how to perform an on-demand collection to the file acctng_file1.

Switch# atm accounting collection collect-now acctng_file1
Switch# Collect-now found 12 SVCs with life longer than min-age

The following example shows how to perform a swap operation on the file acctng_file1.

Switch# atm accounting collection swap acctng_file1
Switch# File Swap Done. New Ready File 4999702 bytes (#records 28796); Active File 65 bytes (#records 0)

Note   The only filename currently allowed is acctng_file1.

Related Commands

Command  Description 

atm accounting file

Used to enable an ATM accounting file and to enter the accounting file configuration mode.

atm accounting enable

To enable the ATM VC accounting feature globally, use the atm accounting enable global configuration command. To disable this feature, use the no form of this command.

atm accounting enable
no atm accounting enable

Syntax Description

This command has no keywords or arguments.

Defaults

Disabled

Command Modes

Global configuration

Command History

Release  Modification 

11.2(5)

New command (originally atm accounting (global)

11.2(8.0.1)

Modified: enable added: atm accounting enable (global)

11.3(3a)

Modified: (global) taken out

Usage Guidelines

Accounting is enabled globally for the switch on interfaces where accounting is configured. An error message is given if memory is fragmented and ATM accounting cannot get two memory chunks of
5 MB each. The switch needs 32 MB of memory or it returns an error message.

The switch must have this command saved in the NVRAM configuration file. Use the following steps to enable ATM accounting:


Step 1   Enable ATM accounting in global configuration mode.

Step 2   Exit global configuration mode.

Step 3   Use the copy running-config startup-config command to save the command in NVRAM.

Step 4   Reboot the switch.





Examples

The following example shows how to enable ATM accounting.

Switch(config)# atm accounting enable

Related Commands

Command  Description 

atm accounting (interface)

Enables ATM accounting on a specific interface.

atm accounting file

To enable an ATM accounting file and enter the accounting file configuration mode, use the atm accounting file global configuration command. To disable an ATM accounting file, use the no form of this command.

atm accounting file filename
no atm accounting file filename

Note   The atm accounting file global configuration command changes the configuration mode to ATM accounting, and the new prompt appears: Switch(config-acct-file)#

To modify the fields in the ATM accounting file, use the following ATM accounting mode configuration subcommands. To set the fields to their default values, use the no form of these subcommands.

collection-modes [periodic] [on-release]
default {collection-modes | description | enable | failed-attempts | interval | min-age}
description string
enable
failed-attempts [none | [regular | soft]]
interval seconds
min-age seconds
remote-log [only] primary-host {hostname | ip-address | tcp-port#} [alternate-host {alt-host-name | alt-ip-address | alt-tcp-port#}]
no collection-modes [periodic] [on-release]
no description string
no enable
no failed-attempts [none | [regular | soft]]
no interval
no min-age
no remote-log

Syntax Description

filename

Specifies the filename of the accounting file.
The only filename currently allowed is acctng_file1.

Defaults

See "Syntax Description."

Command Modes

Global configuration

Command History

Release  Modification 

11.2(5)

New command

Usage Guidelines

The ATM accounting configuration mode subcommands are described in Table 2-1.

Table 2-1   ATM Accounting Configuration Mode Subcommands

Subcommand  Description 

collection-modes

Initializes the collection mode and allows you to specify at what time accounting data is recorded in the file: on the release of a connection (on-release), or periodically (periodic).

default

Sets a parameter to its defaults.

description

Configures a description of the ATM accounting file with a limit of 64 characters.

enable

Activates ATM accounting data collection to a specified file.

failed-attempts

Configures the writing of records for initial connection attempts, as follows:

  • regular—Records regular SVC/SVP numbers that originate or terminate at the switch interface.
  • soft—Records soft PVC/PVP numbers that originate or terminate at the switch interface.
  • none—Does not record failed attempts.

Default is regular and soft.

interval

Sets the period for periodic collection of accounting records. The default is 3600 seconds.

min-age

Configures the value of the minimum age of the VC for on-release or periodic collection of accounting records. The default is 3600 seconds.

remote-log

Establishes a TCP connection from the switch to a PC or workstation, as follows:

  • only—When you specify only, no local storage of accounting occurs.
  • host-name/ip-address—Host name or IP address of the accounting records receiving host computer.
  • tcp port#—The server communicates with the TCP port to connect to the accounting agent in the switch.
  • alt-host-name/alt-ip-address—Host name or IP address of a standby accounting records receiving host computer.
  • alt-tcp-port#—Alternate TCP port with which the server communicates to connect to the accounting agent in the switch.

To change the fields, you can either provide new values, or use the no form of the command.

Changes made to the list affect the file format. The change takes effect only for the next collection, for example, after using the atm accounting collection swap global configuration command. Changes to the connection types take effect immediately.

The ATM selection table is created using the default value of one. You can only modify the following fields in the file:

  • description
  • failed-attempts
  • min-age

  • Note   The only filename currently allowed is acctng_file1.

Examples

The following example shows how to enter the ATM accounting file configuration mode.

Switch# configure terminal
Switch(config)# atm accounting file acctng_file1
Switch(config-acct-file)#

The following example shows how to enter the ATM accounting file configuration mode and configure a description that is displayed in the header of the file when using the show atm accounting command.

Switch(config)# atm accounting file acctng_file1
Switch(config-acct-file)# description Main accounting file for engineering

The following example shows how to enter the ATM accounting file configuration mode and configure failed-attempts to record failed attempts for SVC/SVP connections in the accounting file.

Switch(config)# atm accounting file acctng_file1
Switch(config-acct-file)# failed-attempts regular

The following example shows how to enter the ATM accounting file configuration mode and configure remote-log.

Switch(config)# atm accounting file acctng_file1
Switch(config-acct-file)# remote-log 172.20.52.3 6001 alternate-host cisco-lab 7001

Related Commands

Command  Description 

atm accounting collection

Controls collection of ATM accounting data into a specific file.

atm accounting selection

Enables ATM accounting selection and enters the ATM accounting selection configuration mode.

atm accounting selection

To enable ATM accounting selection and enter the ATM accounting selection configuration mode, use the atm accounting selection global configuration command. To disable ATM accounting selection, use the no form of this command.

atm accounting selection index
no atm accounting selection index

Note   The atm accounting selection global configuration command changes the configuration mode to ATM accounting selection mode, and the following new prompt appears: Switch(config-acct-sel)#

To configure the ATM accounting selection, use the following ATM accounting configuration mode subcommands. To set the selection parameters to their defaults, use the no form of these commands.

connection-types [type] default {connection-types | list}list
no connection-types [type]
no list

Syntax Description

index

Configures the ATM accounting selection index number.

Defaults

No default selection index. See the individual subcommand defaults.

Command Modes

Global configuration

Command History

Release  Modification 

11.2(5)

New command

Usage Guidelines

This release supports only one ATM selection table entry which cannot be deleted.

Examples

The following example specifies the ATM accounting selection index as 1 and restores the
default connection types.

Switch# configure terminal
Switch(config)# atm accounting selection 1
Switch(config-acct-sel)# default connection-types

Related Commands

Command  Description 

atm accounting collection

Controls collection of ATM accounting data into a specific file.

atm accounting file

Enables an ATM accounting file and enters the accounting file configuration mode.

connection-types

Sets types of connections for atm accounting selection.

atm accounting trap threshold

To configure the threshold value which controls the generation of an ATM accounting SNMP trap, use the atm accounting trap threshold global configuration command. To restore the default value of the trap threshold, use the no form of the command.

atm accounting trap threshold percent-value
no atm accounting trap threshold

Syntax Description

percent-value

Specifies the value as a percent of the maximum file size.

Defaults

The default value for the trap threshold is 90.

Command Modes

Global configuration

Command History

Release  Modification 

11.2(5)

New command (originally atm accounting trap)

11.2(8.0.1)

Modified: Added threshold

Usage Guidelines

To see the file size, threshold value, and trap statistics, use the show atm accounting EXEC command.

Examples

The following example changes the ATM accounting trap threshold to 80.

Switch(config)# atm accounting trap threshold 80

Related Commands

Command  Description 

connection-types

Sets types of connections for atm accounting selection.

atm address

To assign a 20-byte ATM address to the switch, use the atm address global configuration command. To delete a specific ATM address, use the no form of this command.

atm address address-template
no atm address address-template

Syntax Description

address-template

The address template can be a full 20-byte address or a partial 13-byte. When a partial address is assigned, this command automatically sets one of the switch's 6-byte MAC addresses in the ESI part, and puts a 0 in the selector part.

Defaults

When no atm address has been configured, an autoconfigured ATM address is assigned. Refer to the ATM Switch Router Software Configuration Guide for more information.

Command Modes

Global configuration

Command History

Release  Modification 

11.1(4)

New command

Usage Guidelines

You can have multiple ATM addresses. The first address in the list is the active ATM address for this switch router. When you delete the current active ATM address, the next address in the list becomes the active ATM address.

In autoconfiguration mode, the switch router establishes an address according to the format specified in the ATM Switch Router Software Configuration Guide.

The first 13-byte prefixes of all of the addresses are used by ILMI to assign addresses to end stations connected to the UNI ports (unless there is a prefix assigned per port). PNNI also summarizes all of the address prefixes automatically in reachable address advertisements. Refer to the auto-summary command for more information.

The active ATM address determines which address is advertised by PNNI as the ATM address of the PNNI local-nodes. Each local-node uses the active ATM address with the selector byte modified to match the local-node index.

In addition, the active ATM address is used as the source prefix for generating the PNNI peer group IDs and node IDs. However, the peer group IDs and node IDs are only updated after the local-node is disabled and reenabled. Therefore, it is recommended that a change to the active ATM address should be followed by a disable and enable of PNNI local-node 1, which will also update the identifiers for all higher local-nodes.

For two switches to belong to the same PNNI peer group, they need to have the same peer group identifier. Peer group identifiers must be prefixes of private ATM addresses, which means the organization that administers the peer group has assignment authority over that prefix. For more information, refer to the ATM Switch Router Software Configuration Guide.

In autoconfiguration mode, all switche routers have the same peer group identifier based on the first seven bytes of the autoconfigured ATM address.

The first 13-byte prefix of the active address is also used to automatically generate ATM addresses for each ATM interface that can be used for soft PVCs and PVPs to identify the destination ATM interface.

Examples

The following example shows how to assign a 20-byte ATM address to the switch.

Switch# configure terminal
Switch(config)# atm address 47.009181000000000000000001

The following example shows how to change the active ATM address for the switch and to update the PNNI local-node identifiers based on the new active ATM address prefix.


Step 1   Configure the desired new address or prefix to be added to the list of ATM addresses for the switch.

Switch# configure terminal
Switch(config)# atm address 47.00918100002

Step 2   Determine the current active ATM address by using the show atm addresses command. Then remove the current active ATM address, so that the desired new address will be the first in the list. If desired, the removed ATM address(es) can then be readded to appear later in the list.

Switch(config)# no atm address 47.00918100000000400B003081.00400B003081.00

Step 3   (Optional) Update all PNNI local-node identifiers by disabling and reenabling local-node  1.

Switch(config)# atm router pnni
Switch(config-atm-router)# node 1 disable
Switch(config-pnni-node)# node 1 enable

Step 4   (Optional) Save the running configuration to be used as the startup configuration in the event of a reboot.

Switch# copy running-config startup-config





Related Commands

Command  Description 

atm prefix

Configures an ILMI address prefix for an ATM interface.

auto-summary

Allows default summary addresses to be generated based on the switch router's ATM address.

show atm addresses

Displays the active ATM addresses on a switch router.

atm address-registration

To enable the switch to engage in address registration on an interface using the ILMI protocol,
and to enable the optional per-interface access filters on ILMI address registration, use the
atm address-registration interface configuration command. To disable ILMI address registration functions on an interface, use the no form of this command.

atm address-registration [permit {all | matching-prefix [wellknown-groups | all-groups]}]
no atm address-registration

Syntax Description

all

Permit all AESAs registered by attached end systems.

matching-prefix

Permit AESAs where the first 13 bytes of the address match an ILMI prefix used on the interface. These ILMI prefixes can be configured using the global atm address command or the per-interface atm prefix command. The ILMI prefixes used on the interface can be shown using the show atm ilmi-status command.

wellknown-groups

Permit well-known group addresses assigned by the ATM Forum and AESAs that match an ILMI prefix used on the interface.

The well-known group addresses include the old LECS address (47.0079.0000.0000.0000.0000.0000.00A0.3E00.0001.00) and any address matching the ATM Forum address prefix for well-known addresses. (C5.0079.0000.0000.0000.0000.0000.00A0.3E)

all-groups

Permit all group addresses, including the well-known group addresses, and the AESAs that match an ILMI prefix used on the interface.

Defaults

ILMI address registration is enabled by default. If no optional keywords are configured, the global default access filter for ILMI address registration is used, as specified through the atm ilmi default-access permit global configuration command.

Command Modes

Interface configuration

Command History

Release  Modification 

11.1(4)

New command

Usage Guidelines

The atm address-registration command does not apply to the ATM 0 interface.

The atm address-registration command enables a switch to participate in ILMI address registration. When the switch is on the network side of a UNI, the switch sets one or more network prefixes on the peer IME and accepts addresses registered by the peer IME. If the interface does not come up as a UNI, then ILMI address registration is not active, even if it was previously configured to be enabled.

The optional keywords allow configuration of per-interface access filters, in order to allow or deny certain ILMI registered addresses. If specified, the per-interface access filter overrides the global default access filter for ILMI address registration.


Note   If the Cisco SSRP for LAN Emulation is used in this network, ILMI registration of well-known group addresses should be permitted. The SSRP allows the active LECS to register the well-known LECS address with the switch router. Either the permit all, permit matching-prefix wellknown-groups, or permit matching-prefix all-groups option should be configured.

In order to allow certain addresses to be registered via ILMI, while also restricting them from being advertised through PNNI, the PNNI suppressed summary address feature should be used instead of the access filters for ILMI address registration (see the summary-address command for additional information).

The access filters option of this command allows configuration of per-interface access filters for ILMI registration to override the global defaults of the access filters.

Examples

The following example shows how to disable ILMI address registration on ATM interface 1/0/0.

Switch(config)# interface atm 1/0/0
Switch(config-if)# no atm address-registration

The following example enables ILMI address registration on ATM interface 1/0/0 and configures the per-interface access filter for ILMI address registration to allow well-known group addresses and addresses with matching prefixes.

Switch(config)# interface atm 1/0/0
Switch(config-if)# atm address-registration permit matching-prefix wellknown-groups
%ATM-5-ILMIACCFILTER: New access filter setting will be applied to registration of new addresses on ATM1/0/0.

Related Commands

Command  Description 

atm address

Assigns a 20-byte ATM address to the switch router.

atm ilmi default-access permit

Sets the global default access filter for ILMI-registered addresses on all interfaces.

atm ilmi-enable

Enables the ILMI on a port.

atm prefix

Configures an ILMI address prefix for an ATM interface.

show atm ilmi-status

Displays the ILMI-related status information.

summary-address

Configures summary address prefixes on a PNNI node.

atm aesa gateway

To configure an AESA gateway address on an ATM switch interface that connects to a service provider maintaining a separate ATM addressing plan, use the atm aesa gateway interface configuration command. To restore the default (disabled), use the no form of this command.

atm aesa gateway aesa-address
no atm aesa gateway

Syntax Description

aesa-address

Specifies a forwarding 20-octet AESA that is used when a call matching the ATM address prefix is forwarded across the specified interface.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Release  Modification 

12.0(4a)W5(11a)

New command

Usage Guidelines

When outgoing calls are configured to use the forwarding AESA address as the called party address
(see the atm route command), this AESA is used as the forwarding calling party address.

When incoming calls are received on the interface that specifies the forwarding AESA as the called party address, the called and calling party addresses are removed from the signalling message and replaced by the new called and calling party subaddresses.

This new address is not registered with routing because it is used only as this switch's address for this interface. It is not used as the address of destination from this interface.

The combination of the atm aesa gateway command and the atm-aesa option of the atm route command provides a general mechanism for interconnection of private ATM networks across an ATM service provider. This combination allows one AESA for the interface to the ATM service provider network, with many AESA addresses present in the private network behind the interface.

Examples

The following example shows how to configure the AESA gateway address:

Switch(config)# interface atm 0/1/2
Switch(config-if)# atm aesa gateway 91.999999999999999999999999.111111111111.00

Related Commands

Command  Description 

atm route

Specifies a static route to a reachable address prefix.

show atm interface

Displays ATM-specific information about an ATM interface.

show atm vc

Displays the ATM layer connection information about the virtual connection.

show interfaces

Displays the interface configuration, status, and statistics.

atm arp-server

To identify an ARP server for the IP network, or set TTL values for entries in the ATM ARP table, use the atm arp-server interface configuration command. To disable an ARP server process, use the no form of this command.

atm arp-server [self [time-out minutes] | nsap nsap-address]
no atm arp-server [self [time-out minutes] | nsap nsap-address]

Syntax Description

self

Specifies the current switch as the ATM ARP server.

minutes

Number of minutes a destination entry listed in the ATM ARP server's ARP table is kept before the server takes any action to verify or time out the entry.

nsap-address

NSAP address of an ATM ARP server.

Defaults

The ARP server process is disabled. The default timeout value is 20 minutes.

Command Modes

Interface configuration

Command History

Release  Modification 

11.1(4)

New command

Usage Guidelines

This command applies only to route processor and IP interfaces.

If an NSAP address is specified, the ARP client on this interface uses the specified host as an
ARP server.

Multiple ATM ARP servers can be specified by repeating the command. The no option is used to remove the definition of an ATM ARP server. If self is specified, this interface acts as the ARP server for the logical IP network.

The ATM ARP server takes one of the following actions if a destination listed in the server's ARP table expires:

  • If a virtual circuit still exists to that destination, the server sends an Inverse ARP request.
    If no response arrives, the entry times out.
  • If a virtual circuit does not exist to the destination, the entry times out immediately.

This implementation follows RFC 1577, "Classical IP over ATM."

Related Commands

Command  Description 

show atm arp-server

Displays the ATM ARP server table.

atm auto-configuration

To enable or disable ILMI autoconfiguration, use the atm auto-configuration interface configuration command. To disable this feature, use the no form of this command.

atm auto-configuration
no atm auto-configuration

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled

Command Modes

Interface configuration

Command History

Release  Modification 

11.1(4)

New command

Usage Guidelines

This command enables or disables ILMI autoconfiguration procedures, as specified in Section 8.3.3 of the ATM Forum ILMI 4.0 Specification.

Among the variables covered by ILMI autoconfiguration are the interface protocol and version, interface side (user or network), UNI type (public or private), and the maximum number of VPI bits and VCI bits. Configuration of the atm auto-configuration command on an interface overwrites any previous configuration of the atm iisp, atm nni, atm maxvci-bits, and atm maxvpi-bits commands.

When autoconfiguration is enabled, ATM signalling and ILMI are restarted automatically on the interface. When ATM signalling is restarted, all switched virtual connections across the interface are cleared; permanent virtual connections are not affecte