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Implementing IS-IS on Cisco IOS XR Software
How to Implement IS-IS on Cisco IOS XR Software
RC-118
Cisco IOS XR Routing Configuration Guide
Enabling Multicast-Intact for IS-IS
This optional task describes how to enable multicast-intact for IS-IS routes that use IPv4 addresses.
Summary Steps
1. configure
2. router isis instance-id
3. address-family {ipv4 | ipv6} [unicast]
4. mpls traffic-eng multicast-intact
5. end
or
commit
Step 7
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.
Step 8
show isis [instance
instance-id
] spf-log [level
{
1 | 2}] [ipv4 | ipv6] [unicast] [ispf | fspf | prc]
[detail] [internal] [last
number
| first
number
]
Example:
RP/0/RP0/CPU0:router# show isis instance 1
spf-log ipv4
(Optional) Displays how often and why the router has run a
full SPF calculation.
Command or Action Purpose