MPLS-VPN Route Reflector Question (rr-group)
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09-03-2004 05:52 AM
I have a question on MPLS VPN Route Reflectors or most likely on the use of the "rr-group" command. Say you have 5 PE routers that have 2 seperate customers MPLS VPNS configured. These 5 PE routers are peering with a route reflector and you want them to only recieve routes for route target 100:1 (Customer 1) and 100:2 (Customer 2). You would configure the rr-group with an extended community list matching 100:1 and 100:2. So far so good.
But say you get 2 new customers that want VPNS, and you want the PE routers that terminate them to use the same route reflectors for them to peer with. How would you say on the route reflector that neighbor 1 and 2 are associated with rr-group 1 which has a extended community list that only sends the routes they have VPNS for, and neighbors 2 and 3 are associated with rr group 2 which has a extended community list that only sends them the routes for their VPNS ?
From what I see you can only configure 1 rr-group on a route reflector. Is there a way to configure rr-groups like peer groups ? So each neighbor or group of neighbors only gets the routes for which they need ?
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09-04-2004 11:36 AM
Bear in mind that VPNv4 prefixes sent to a PE and that doesn't match any of the RTs on the PE will be denied and then dropped by that same PE. It would obviously be nicer not to send these prefixes to the PE at all but this would require ORF support for extended communities, which is currently not currently available.
Hope this helps,
Harold Ritter, CCIE #4168 (EI, SP)
