Specifications

Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-103
Cisco IOS XR Routing Configuration Guide
Configuring BGP as a PE-CE Protocol
Perform this task to configure BGP on the PE and establish PE-CE communication using BGP.
SUMMARY STEPS
1. configure
2. router bgp as-number
3. vrf vrf-name
4. bgp router-id ip-address
5. label-allocation-mode per-ce
6. address-family {ipv4 | ipv6} unicast
7. network {ip-address/prefix-length | ip-address mask}
8. aggregate-address address/mask-length
9. exit
10. neighbor ip-address
11. remote-as as-number
12. password {clear | encrypted} password
13. ebgp-multihop [ttl-value]
14. address-family {ipv4 {unicast | labeled-unicast} | ipv6 unicast}
15. site-of-origin [as-number:nn | ip-address:nn]
16. as-override
17. allowas-in [as-occurrence-number]
Step 5
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr-af)# end
or
RP/0/RP0/CPU0:router(config-bgp-nbr-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.
Command or Action Purpose