Hi Henry, Please note that even though the diverse-path RR feature is easy to deploy there's one possible drawback to be taken into consideration Once configured with the diverse-path feature the RR will start to advertise all paths for all prefixes to all its clients -so you should make sure all the RR clients can cope with the tables growth (depending on the # of prefixes and the # of alternate paths per each prefix) -please note that this will affect all the bgp speakers not just those clients that really need the diverse paths for loadsharing or anycasting purposes
If you are using mpls in your backbone you'd definitely want to be using different RD per each bgp speaker to make the prefix unique from RR's perspective Matthias, What I've used for anycast or multipath in pure IP bgp-RR environments prior to the diverse-path or add-path features was adding the Path-Based-RR to the existing AddressBased-RR or Topology-Bassed-RR So for 6 paths you'd have 6 RRs each choosing the same prefix with different path as best passing it down to all clients -and have clients to peer with all 6 RRs Please note these where pure control plane RRs As you can see this doesn't scale well as the separate RR infrastructure needs to be built for each diverse path that needs to be propagated to RR clients adam -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Robert Raszuk Sent: Friday, May 04, 2012 5:48 PM To: henrry huaman Cc: [email protected] Subject: Re: [c-nsp] Anycast//DNS - BGP Hi Henry, > Currently we have issues with the RR (Only select the main route) That's an easy one to solve :) Try using either add-paths or diverse-path on the RR. The latter is much easier as it does not require upgrade of all of your BGP speakers ! http://goo.gl/KDjlg Best, R. > We want to work with DNS that are span geographical. Our DNS have the same IP. > We need to configure the Backbone IP (BGP) to distribute this IP (Anycast). > Could you have any examples over how to deployment Anycast? > Currently we have issues with the RR (Only select the main route) > > Thanks a lot! > > Henry > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
