Cisco NCS 6000 Series

SUMMARY STEPS
1. configure
2. router bgp as-number [instance instance name]
3. bgp router-id ip-address
4. commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Enters BGP configuration mode for the user specified BGP
instance.
router bgp as-number [instance instance name]
Example:
Step 2
RP/0/RSP0/CPU0:router(config)# router bgp 100
instance inst1
Configures a fixed router ID for the BGP-speaking router
(BGP instance).
bgp router-id ip-address
Example:
Step 3
You must manually configure unique router ID
for each BGP instance.
Note
RP/0/RSP0/CPU0:router(config-bgp)# bgp router-id
10.0.0.0
commit
Step 4
Configuring a Routing Domain Confederation for BGP
Perform this task to configure the routing domain confederation for BGP. This includes specifying a
confederation identifier and autonomous systems that belong to the confederation.
Configuring a routing domain confederation reduces the internal BGP (iBGP) mesh by dividing an autonomous
system into multiple autonomous systems and grouping them into a single confederation. Each autonomous
system is fully meshed within itself and has a few connections to another autonomous system in the same
confederation. The confederation maintains the next hop and local preference information, and that allows
you to retain a single Interior Gateway Protocol (IGP) for all autonomous systems. To the outside world, the
confederation looks like a single autonomous system.
SUMMARY STEPS
1. configure
2. router bgp as-number
3. bgp confederation identifier as-number
4. bgp confederation peers as-number
5. commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
49
Implementing BGP
Configuring a Routing Domain Confederation for BGP