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Token Ring Inter-Switch Link Commands

Token Ring Inter-Switch Link Commands

Use the commands in this chapter to configure Token Ring Inter-Switch Link (TRISL) on Cisco routers. To locate related commands that are documented in other chapters, use the command reference master index or search online. For TRISL configuration task information and examples, refer to the "Configuring Token Ring Inter-Switch Link" chapter in the Bridging and IBM Networking Configuration Guide.

For hardware technical descriptions and for information about installing the router interfaces, refer to the hardware installation and maintenance publication for your particular product.

clear drip counters

Use the clear drip counters privileged EXEC command to clear DRiP counters.

clear drip counters

Syntax Description

This command has no arguments or keywords.

Command Mode

Privileged EXEC

Usage Guidelines

This command first appeared in Cisco IOS Release 11.3(4)T.

Use the clear drip counters command if you want to check whether the router is receiving any packets. The counters will start at 0. If the counters are incrementing, DRiP is active on the router.

Example

The following example clears DRiP counters:

router# clear drip counters

Related Commands

You can use the master indexes or search online to find documentation of related commands.

encapsulation tr-isl trbrf-vlan
show drip

encapsulation tr-isl trbrf-vlan

Use the encapsulation tr-isl subinterface configuration command to enable TRISL, a Cisco protocol for interconnecting multiple routers and switches and maintaining Token Ring VLAN information as traffic goes between switches.

encapsulation tr-isl trbrf-vlan vlanid bridge-num bridge-number

Syntax Description

vlanid

Number identifying the VLAN.

bridge-num bridge-number

Keyword and bridge number assigned to the ISL trunk. Possible values are 01 to 15.

Command Mode

Subinterface configuration

Usage Guidelines

This command first appeared in Cisco IOS Release 11.3(4)T.

Examples

The following example enables TRISL is on a Fast Ethernet subinterface:

interface FastEthernet4/0.2
encapsulation tr-isl trbrf-vlan 999 bridge-num 14

Related Commands

You can use the master indexes or search online to find documentation of related commands.

clear drip counters
clear vlan statistics
multiring
multiring trcrf-vlan
show drip
show vlan
source-bridge trcrf-vlan

multiring trcrf-vlan

Use the multiring trcrf-vlan interface configuration command to create a pseudo-ring to terminate the RIF for source routed traffic and assign it to a VLAN. Use the no form of this command to disable the caching of RIFs on the subinterface.

multiring trcrf-vlan vlanid ring ring-number
no multiring trcrf-vlan vlanid ring ring-number

Syntax Description

vlanid

VLAN ID number.

ring ring-number

Keyword and the logical ring number for Token Ring VLANs. Possible values are 01 to 4095.

Default

Disabled

Command Mode

Interface configuration

Usage Guidelines

This command first appeared in Cisco IOS Release 11.3(4)T.

When you use this command, you must also use the multiring command to enable the collection and caching of RIFs with routed protocols. The multiring trcrf-vlan command must be issued before the multiring command.

Example

In the following example, the multiring trcrf-vlan command is used to configure a pseudo-ring for the subinterface:

interface FastEthernet4/0.1
 ip address 5.5.5.1 255.255.255.0
 encapsulation tr-isl trbrf-vlan 999 bridge-num 14
 multiring trcrf-vlan 1000 ring 100
    multiring all

Related Commands

You can use the master indexes or search online to find documentation of related commands.

clear drip counters
multiring
show drip
show rif
show vlan

show drip

Use the show drip privileged EXEC command to display the status of the DRiP database.

show drip

Syntax Description

This command has no arguments or keywords.

Command Mode

Privileged EXEC

Usage Guidelines

This command first appeared in Cisco IOS Release 11.3(4)T.

Sample Display

The following is sample output from the show drip command:

Router# show drip
DRIP Database for Mgmt Domain FastEthernet4/0
--------------------------------------------------
Mac Address 0010-A6AE-B440
Vlan     100    Status    30 : l-active, l-config, 
Mac Address 0010-2F72-C800
Vlan      20    Status    0C : r-active, r-config, 
Vlan    1003    Status    0C : r-active, r-config,
Statistics:
Advertisements received            126
Advertisements processed           1
Advertisements transmitted         131
Last revision transmitted          0x84      
Last changed revision transmitted  0x2 

Related Commands

You can use the master indexes or search online to find documentation of related commands.

encapsulation tr-isl trbrf-vlan
clear drip counters
show vlan

source-bridge trcrf-vlan

Use the source-bridge trcrf-vlan privileged EXEC command to attach a TrCRF VLAN to the router's virtual ring. Use the no form of the command to disable the attachment of a VLAN to the router's virtual ring.

source-bridge trcrf-vlan vlanid ring-group ringnum

Syntax Description

vlanid

VLAN ID number.

ring-group ringnum

Keyword and ring number of the virtual ring.

Command Mode

Privileged EXEC

Usage Guidelines

This command first appeared in Cisco IOS Release 11.3(4)T.

The source-bridge trcrf-vlan command is required for SRB traffic across a TRISL trunk. Use the encapsulation tr-isl command for the subinterface, prior to attaching a TrCRF VLAN to the router's ring.

Example

Following is an example of the source-bridge trcrf-vlan command for an interface where the VLAN ID number and ring group number is specified:

interface FastEthernet4/0.2
encapsulation tr-isl trbrf-vlan 999 bridge-num 14
source-bridge trcrf-vlan 100 ring-group 101

Related Commands

You can use the master indexes or search online to find documentation of related commands.

show source-bridge
source-bridge ring-group
encapsulation tr-isl trbrf-vlan


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