Configure the Metric Type for IS-IS Routes

Before you begin

You must configure the required SPBM and IS-IS infrastructure.
You must log on to the route-map configuration mode in the CLI.

About this task

Use this procedure to configure the IS-IS external metric-type by using a route-map for any of the following cases:

accept a remote IS-IS route with the help of IS-IS accept policies
redistribute routes from other protocols into IS-IS

Caution

To use IS-IS Route Tagging on GRT IS-IS routes, you must also configure the metric-type as external. If you want to use IS-IS tags on GRT as internal routes, all Fabric nodes must be above a minimum software version. Any switch in the SPB Fabric that runs earlier software versions triggers an exception if you use metric type internal. To ensure this does not occur, if you attempt to configure a tag and the metric-type is not external, the switch reminds you to upgrade the software on all devices. You must ensure all devices in the network run the minimum required software.

Procedure

Enter Route-Map Configuration mode:

enable

configure terminal

route-map WORD<1-64> <1-65535>
Configure the IS-IS metric type:

set metric-type-isis {any|internal|external}
Permit the route policy action:

permit
Enable the route policy

enable

Examples

Configure the metric type for IS-IS routes:

Switch:1> enable
Switch:1# configure terminal
Switch:1(config)# route-map ro1 10
Switch:1(route-map)# set metric-type-isis internal
Switch:1(route-map)# permit
Switch:1(route-map)# enable

Set metric type for IS-IS routes in accept policies:

Switch:1> enable
Switch:1# configure terminal
Switch:1(config)# route-map ro1 10
Switch:1(route-map)# set metric-type-isis internal
Switch:1(route-map)# permit
Switch:1(route-map)# enable
Switch:1(route-map)# exit
Switch:1(config)# router isis
Switch:1(config-isis)# accept route-map ro1
Switch:1(config-isis)# exit
Switch:1(config)# isis apply accept

Set metric type to redistribute routes from other protocols into IS-IS:

Switch:1> enable
Switch:1# configure terminal
Switch:1(config)# route-map ro1 10
Switch:1(route-map)# match metric-type-isis internal
Switch:1(route-map)# permit
Switch:1(route-map)# enable
Switch:1(route-map)# exit
Switch:1(config)# router isis
Switch:1(config-isis)# redistribute bgp route-map ro1
Switch:1(config-isis)# exit
Switch:1(config)# isis apply redistribute

Variable Definitions

The following table defines parameters for the set metric-type-isis command.


Variable	Value
metric-type-isis {any\|internal\|external}	Specifies the IS-IS metric type: internal – permits or denies routes that are internal to the IS-IS domain. external – permits or denies routes that originate from an external routing protocol domain. any – permits or denies both internal routes as well as external routes.