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Re: MPBGP with RR Question

  • From: Marcelo Blanes <mblanes@larc.usp.br>
  • Date: Thu, 29 Nov 2001 11:40:23 -0200 (EDT)
  • cc: MPLS@phoenix2.maa.sify.net, MPLSRC <mpls-ops@mplsrc.com>
  • Resent-Date: Thu, 29 Nov 2001 11:15:53 -0500
  • To: krishnak@sify.com
  • X-Sender: mblanes@melao

In a RR design you will need:

In a cluster:
Each PE needs to have a iBGP VPNv4 session to the RRs. If you have 2
session you can use peer-group.
The RRs must have a normal iBGP VPNv4 session with each other.
The RR must have a bgp cluster id to avoid loops.

If more than a cluster is used:
The RR must have a iBGP session to others RR.

The internet routing architectures book from cisco press is a great
reference for BGP designs.

Marcelo.


On Wed, 28 Nov 2001 krishnak@sify.com wrote:

> Hi,
> 
> My question is regarding usage of RR for MPLS VPN routing propogation/distribution. Enviromnet is completely Cisco. (simulating on 36xx routers)
> 
> Since I have more PE routers in each area, I would like to use RR functionality so that I need not have a mesh of PE-PE peerings across areas and the whole network. This will avoid a long list of configuration commands.
> 
> I tried configurign RR on P routers and established RR clients with all PEs. All P routers will have a mesh connectivity and similar setup will be there in other areas too (P being RR and PE being RR Clinet). 
> 
> Now the problem I face is, that after BGP session establishes, I don't see any VRF routes crossing P-P and being available on PE of other area. I configured vpnv4 address faimily on PE routers and P routers as well.
> 
> Can somebody please point me to right configuration pages, or useful hints..or what ever that can help me in achieving this?...
> 
> Thanks in Advance,
> 
> Regards,
> KK
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