MP-BGP Router Reflectot (RR) Default Behaviour

Unanswered Question
Oct 24th, 2007
User Badges:

Hi All,

I have a 7206VXR configured like RR for MPBGP (Afi/safi 1/128 L3VPN rfc 2547Bis).

My RR is configured with different peer-group towards its clients (PE).

I'd like to konw what is the RR's default behaviour when it receives an updata message type 'withdrawal' by its client.

I've observed that:

- When a PE send its update (withdrawal), it receive back by RR all its bgp table...with a lot NLRI that my PE doesn't need..Is it a normal behaviour?

- When a PE send its update (withdrawal), it receives back by RR its own update..I think that this is a normal behaviuor since he is configured within a peer-group on RR. Is it correct?

Many thanks in advance for your support.


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
irisrios Tue, 10/30/2007 - 07:18
User Badges:
  • Silver, 250 points or more

The second one is the normal behaviour. PE should normally withdraw the routes which it advertised.

santiago.enciso Sat, 02/09/2008 - 14:30
User Badges:

Hello I'm trying to configure a lab with 4 7600-sup32-3b 12.2(2)-33.SRC. 2 of them as P routers and the rest as PE. P's are Route Reflector and PE are route reflector clients. If I create the same VRF in both PE routes are note not advertised between PEs.(show ip route vrf lab). Please could you give me a configuration example or a link where I could take a look.

Thanks in advance. Santiago.


This Discussion