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Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-41
Cisco IOS XR Routing Configuration Guide
Indicating BGP Backdoor Routes
Perform this task to set the administrative distance on an external Border Gateway Protocol (eBGP) route
to that of a locally sourced BGP route, causing it to be less preferred than an Interior Gateway Protocol
(IGP) route.
SUMMARY STEPS
1. configure
2. router bgp autonomous-system-number
3. address-family {ipv4 unicast | ipv4 multicast | ipv6 unicast | ipv6 multicast}
4. network {ip-address /prefix-length | ip-address mask} backdoor
5. end
or
commit
Step 7
bgp bestpath compare-routerid
Example:
RP/0/RP0/CPU0:router(config-bgp)# bgp bestpath
compare-routerid
Configure the BGP speaker in autonomous system 120 to
compare the router IDs of similar paths.
Step 8
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-bgp)# end
or
RP/0/RP0/CPU0:router(config-bgp)# 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.
Command or Action Purpose