Cisco NCS 5500 Series

Step 6
Do one of the following:
•
end
•
commit
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf)# end
or
RP/0/RP0/CPU0:router(config-bgp-vrf)# 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 XR EXEC mode.
◦
Entering no exits the configuration session and returns the router to XR 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.
Configure PE-PE or PE-RR Interior BGP Sessions
To enable BGP to carry VPN reachability information between provider edge (PE) routers you must configure
the PE-PE interior BGP (iBGP) sessions. A PE uses VPN information carried from the remote PE router to
determine VPN connectivity and the label value to be used so the remote (egress) router can demultiplex the
packet to the correct VPN during packet forwarding.
The PE-PE, PE-route reflector (RR) iBGP sessions are defined to all PE and RR routers that participate in the
VPNs configured in the PE router.
Perform this task to configure PE-PE iBGP sessions and to configure global VPN options on a PE.
BGP Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
106
Implementing BGP
Configuring a VPN Routing and Forwarding Instance in BGP