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Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-63
Cisco IOS XR Routing Configuration Guide
Step 4
router bgp
autonomous-system-number
Example:
RP/0/RP0/CPU0:router(config)# router bgp 120
Enters BGP configuration mode allowing you to configure
the BGP routing process.
Step 5
neighbor
ip-address
Example:
RP/0/RP0/CPU0:router(config-bgp)# neighbor
172.168.40.24
Places the router in neighbor configuration mode for BGP
routing and configures the neighbor IP address
172.168.40.24 as a BGP peer.
Step 6
address-family {ipv4 unicast | ipv4 multicast |
ipv6 unicast | ipv6 multicast}
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr)#
address-family ipv4 unicast
Enters neighbor address family configuration mode for the
IPv4 address family.
Step 7
route-policy
route-policy-name
{in | out}
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr-af)#
route-policy In-Ipv4 in
Applies the In-Ipv4 policy to inbound IPv4 unicast routes.
Step 8
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