Table of Contents

M 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:

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

mac-address

To configure the MAC address associated with an LEC, use the mac-address LANE configuration server database command. To remove the MAC address, use the no form of this command.

mac-address ieee-address

Syntax Description

Defaults

No MAC layer address is set.

Command Modes

LANE configuration server database

Command History

Examples

The following example shows configuring the MAC address for the LEC where xx.xxxx is an appropriate second half of the MAC address to use.

map-class

To enter map-class configuration mode to define parameters that you will use in specifying a request for an SVC (the SETUP message), use the map-class global configuration command. To delete this class, use the no form of this command.

map-class {atm | dialer | frame-relay} class-name

no map-class {atm | dialer | frame-relay} class-name

Syntax Description

Defaults

No traffic parameters are defined.

Command Modes

Global configuration

Command History

Usage Guidelines

If the map class identified by class-name does not already exist, the switch router creates a new one. In either case, this command specifies the map class to which subsequent encapsulation-specific commands apply. Configuration of a map class is allowed only if the subsystem corresponding to the encapsulation is linked.

It is up to the media-specific routing that uses a static map to ensure that the referenced class exists if parameters are required.

Most parameters specified through a map class are used to dictate the contents of the ATD IE present in a SETUP message used to initiate an SVC. These parameters are as follows:

When possible, Best Effort is signalled. In UNI 3, a Best Effort Indication is included in the ATD IE only if the contents of the IE consist of forward and backward Peak Cell Rate for CLP 0+1 (and the Best Effort Indication). Therefore, if any of the above parameters other than forward-peak-cell-rate-clp1 and backward-peak-cell-rate-clp1 are specified in the map class, Best Effort cannot be signalled.

It is important that Best Effort is signalled, because this causes a switch to interpret the SETUP as a request for a UBR connection. UBR requests do not cause bandwidth to be reserved per-connection.

If Best Effort cannot be signalled (one of the other parameters is specified in the map class), then this causes a switch to interpret the SETUP as a request for VBR-NRT service.

All combinations of parameters are allowed in the definition of map class. The following recommendations can help to specify a correct set of parameters:

If default traffic parameters are used in the initiation of an SVC, a Best Effort ATD IE is used. The forward and backward peak-cell-rate0+1 values are 24-bits set to "1" (0xffffff). This is a unique value used to indicate that default shaping parameters can be applied.

Examples

The following example establishes traffic parameters for map-class atmclass1.

Related Commands

map-group

To associate an ATM map list to an interface or subinterface for either a PVC or SVC, use the map-group interface configuration command. To remove the reference to the map list, use the
no form of this command.

map-group name

no map-group name

Syntax Description

Defaults

No ATM map lists are associated.

Command Modes

Interface configuration

Command History

Usage Guidelines

More than one map group can be configured for an interface. This command only applies to interfaces on the route processor card and to terminating connections.

Examples

In the following example, the map list named atm is associated with the ATM interface.

Related Commands

map-list

To define an ATM map statement for either a PVC or SVC, use the map-list global configuration command. To delete this list and all associated map statements, use the no form of this command.

map-list name

no map-list name

Syntax Description

Defaults

No map statements are defined.

Command Modes

Global configuration

Command History

Usage Guidelines

This command only applies to interfaces on the route processor card and to terminating connections.
To allow the switch router to propagate routing updates and ARP requests, a static map that maps the protocol address and the ATM address of the next-hop ATM station must be configured. The switch router supports a mapping scheme that identifies the ATM address of remote hosts or switch routers. This address can be specified either as a VCI descriptor for a PVC or an NSAP address for an SVC.

The map-list command specifies the map list to which the subsequent map-list configuration commands apply. These map-list configuration commands identify destination addresses. One map list can contain multiple map entries. A map list can be referenced by more than one interface or subinterface.

Examples

In the following example, to configure ATM static maps for a PVC, a map list named atm is followed by one map statement for protocol addresses being mapped.

In the following example for an SVC, a map list named atm includes two map statements for protocol addresses being mapped.

Related Commands

max-admin-weight-percentage

To configure the maximum administrative weight percentage used to determine if an alternate route is acceptable, use the max-admin-weight-percentage ATM router PNNI configuration command. To remove the constraint on administrative weight for alternate routes, use the no form of this command.

max-admin-weight-percentage percentage

no max-admin-weight-percentage

Syntax Description

Defaults

Infinity (no constraint on administrative weight for alternate routes).

Command Modes

ATM router PNNI configuration

Command History

Usage Guidelines

This command increases network efficiency by preventing alternate routes that use too many network resources from being specified. The command provides a generalized form of a hop-count limit.

This command only takes effect when background route computation is enabled.

The maximum acceptable administrative weight is equal to the specified percentage of the least administrative weight of any route to the destination (from the background routing tables). For example, if the least administrative weight to the destination is 5040 and the percentage is 300, the maximum acceptable administrative weight for the call is 5040 x 300/100 or 15120.

For more information, refer to the ATM Switch Router Software Configuration Guide.

Examples

The following script shows how to configure the maximum administrative weight percentage to
300 percent using the max-admin-weight-percentage ATM router PNNI configuration command.

Related Commands

Command History

Related Commands

None

max-records

To configure the maximum number of records to be collected for a particular signalling diagnostics filter table entry, use the max-records ATM signalling diagnostics configuration command. To return the maximum records to the default, use the no form of this command.

max-records max-num-records

no max-records

Syntax Description

Defaults

20

Command Modes

ATM signalling diagnostics configuration

Command History

Usage Guidelines

This value denotes the number of call failure records to be collected and stored. When the maximum value is reached, the older records are deleted, making way for the newly created records.

The collected records are overwritten when the max-records value is reached. If this field is set to -1, the records are not overwritten. Setting this field to -1 requires increased memory consumption for call failure records storage, and can lead to shortages of available system memory.

Examples

The following example shows setting the maximum number of records to 18.

Command History

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Note

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Switch# configure terminal

min-age

To configure the value of the minimum age of the VC for on-release or periodic collection of accounting records, use the min-age ATM accounting file subcommand. To return the min-age value to the default, use the no form of this command.

min-age seconds

no min-age

Syntax Description

seconds Specifies the number of seconds.

Defaults

3600 seconds

Command Modes

ATM accounting file

Command History

Release  Modification  12.0.1 New command

Usage Guidelines

None

Examples

None

Related Commands

Command  Description  atm accounting file Used to employ accounting file configuration mode and to enable an ATM accounting file. collection-modes Used to initialize the collection mode and specifies at what time accounting data is recorded in the accounting file. failed-attempts Configures the writing of records for initial connection attempts.

mtu

To adjust the maximum packet size or MTU size, use the mtu interface configuration command.
To restore the MTU value to its original default value, use the no form of this command.

mtu bytes

no mtu

Syntax Description

bytes Specifies the desired size, in bytes.

Defaults

Table 12-1 lists default MTU values according to media type.

Table 12-1   Default Media MTU Values

Media Type  Default MTU  Ethernet 1500 ATM 4470 ARM

Command Modes

Interface configuration

Command History

Release  Modification  11.1(4) New command

Usage Guidelines

Each interface has a default maximum packet size or MTU size. This number generally defaults to the largest size possible for that type interface.

---

Note   Changing the MTU value with the mtu interface configuration command can affect values for the protocol-specific versions of the command (ip mtu for example). If the value specified with the ip mtu interface configuration command is the same as the value specified with the mtu command and you change the value for the mtu command, the ip mtu value automatically matches the new mtu value. However, changing the value for the ip mtu command has no effect on the value for the mtu command.

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Examples

The following example specifies an MTU of 4470 bytes.

Switch# configure terminal

Switch(config)# interface atm 0
Switch(config-if)# mtu 4470

Related Commands

Command  Description  ip mtu Sets the MTU size of IP packets sent on an interface.

multiring

To enable collection and use of RIF information on a subinterface, use the multiring interface configuration command. To disable the use of RIF information, use the no form of this command.

multiring ip [all-routes | spanning]

no multiring ip [all-routes | spanning]

Syntax Description

ip Protocol type for which to enable multiring. all-routes Uses all-routes explorers. spanning Uses spanning-tree explorers.

Defaults

Disabled

Command Modes

Interface configuration

Command History

Release  Modification  11.1(4) New command

Usage Guidelines

In source-route bridged or Token Ring switched networks, only packets with RIF are forwarded by intermediate source-route bridges. To ensure that IP datagrams are transmitted across a Token Ring switch or source-route bridge to and from an ATM switch router, use the multiring command.

When multiring is enabled, the Token Ring LEC strips the RIF information and caches it in its RIF table for incoming IP/ARP packets. It adds a RIF for subsequent IP/ARP response packets to be sent back across the network. Use the show rif command to display the RIF table entries. To configure static RIF entries, use the rif command.

Examples

The following example shows how to configure a subinterface with an IP address and Token Ring LANE LEC, and then enable multiring.

Switch# configure terminal

Switch(config)# interface atm 0.1

Switch(config-subif)# ip address 1.1.1.2 255.255.255.0

Switch(config-subif)# lane client tokenring cisco

Switch(config-subif)# multiring ip

Related Commands

Command  Description  rif Used to enter static source-route information into the RIF cache. show rif Displays the current contents of the RIF cache.