Implementing IS-IS on Cisco IOS XR Software
How to Implement IS-IS on Cisco IOS XR Software
RC-119
Cisco IOS XR Routing Configuration Guide
DETAILED STEPS
Customizing Routes for IS-IS
This task describes how to perform route functions that include injecting default routes into your IS-IS
routing domain and redistributing routes learned at one IS-IS level into a different level. This task is
optional.
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 process, and
places the router in router configuration mode. In this
example, the IS-IS instance is called isp.
Step 3
address-family {ipv4 | ipv6} [unicast]
Example:
RP/0/RP0/CPU0:router(config-isis)#
address-family ipv4
Specifies the IPv4 or IPv6 address family, and enters router
address family configuration mode. This example specifies
the unicast IPv4 address family.
Step 4
mpls traffic-eng multicast-intact
Example:
RP/0/RP0/CPU0:router(config-isis)# mpls
traffic-eng multicast-intact
Enables multicast-intact.
Step 5
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-isis-af)# end
or
RP/0/RP0/CPU0:router(config-isis-af)# commit
Saves configuration changes.
• When you issue the end command, the system prompts
you to commit changes:
Uncommitted changes found, commit them before
exiting(yes/no/cancel)?
[cancel]:
–
Entering yes saves configuration changes to the
running configuration file, exits the configuration
session, and returns the router to EXEC mode.
–
Entering no exits the configuration session and
returns the router to EXEC mode without
committing the configuration changes.
–
Entering cancel leaves the router in the current
configuration session without exiting or
committing the configuration changes.
• Use the commit command to save the configuration
changes to the running configuration file and remain
within the configuration session.
