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Implementing IS-IS on Cisco IOS XR Software
How to Implement IS-IS on Cisco IOS XR Software
RC-278
Cisco IOS XR Routing Configuration Guide
OL-14356-01
SUMMARY STEPS
1. configure
2. router isis instance-id
3. net network-entity-title
4. is-type {level-1 | level-1-2 | level-2-only}
5. end
or
commit
6. show isis [instance instance-id] protocol
DETAILED STEPS
Command or Action Purpose
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
router isis instance-id
Example:
RP/0/RP0/CPU0:router(config)# router isis isp
Enables IS-IS routing for the specified routing instance, and
places the router in router configuration mode.
• By default, all IS-IS instances are automatically
Level 1 and Level 2. You can change the level of
routing to be performed by a particular routing instance
by using the is-type router configuration command.
Step 3
net network-entity-title
Example:
RP/0/RP0/CPU0:router(config-isis)# net
47.0004.004d.0001.0001.0c11.1110.00
Configures network entity titles (NETs) for the routing
instance.
• Specify a NET for each routing instance if you are
configuring multi-instance IS-IS.
• This example configures a router with area ID
47.0004.004d.0001 and system ID 0001.0c11.1110.00.
• To specify more than one area address, specify
additional NETs. Although the area address portion of
the NET differs, the systemID portion of the NET must
match exactly for all of the configured items.