Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.


Configuring Cluster-ID in RR


I ve two Route Reflectors for MP-BGP session with multiple clients. All clients are configured under a peer-group. The setup is up and working fine. Now i want to configure cluster-id in the RR's (though its not required in our current setup with one cluster we would require in the future and make it as a standard setup). I heard to configure Cluster-ID in a RR requires BGP peer-group configuration need to be removed prior to that. Are there any prerequisites to be done before configuring Cluster-ID in Route Reflectors?

Thanks in advance..

New Member

Re: Configuring Cluster-ID in RR

hi all

I`m not sure but I think maybe "cle ip bgp* or cle ip bgp peer-group-name" will re-establish connection between bgp peer and do not need remove prior configuration about peer-group after add a cluster-ID.

I`d like to learn this with Arun together.




Re: Configuring Cluster-ID in RR


I got the basic prerequisite for configuring Cluster ID in a RR which is running with existing Clients.

"Configuring Cluster ID in RR requires no clients be configured on the RR. If any clients are configured, need to unconfigure it and configure Cluster ID then re-configure the clients".

Anyhow i would like to hear from Pro's are there any more changes to be done for configuring Cluster ID.

Re: Configuring Cluster-ID in RR

hi Arun,

As far as I know, cluster-id has to be the same for both RR's to be redundant. Every client should peer with each RR, and

RR's should have the same cluster-id and peer with each other via

iBGP, they should not be clients of each other.

I have a sample config of both peer-group & cluster-id configured. So there seems to be no pre-requisite.

router bgp 100

no synchronization

bgp cluster-id 100

neighbor reflectors peer-group

neighbor reflectors remote-as 1

neighbor reflectors update-source Loopback0

neighbor clients peer-group

neighbor clients remote-as 1

neighbor clients update-source Loopback0

neighbor clients route-reflector-client

neighbor peer-group reflectors

neighbor peer-group clients

neighbor peer-group clients

neighbor peer-group clients

no auto-summary