BGP Peer Selective Address Tracking is broken until 12.4(15)T3

In IOS release 12.4(15)T (and potentially in all older releases, I've tested it with 12.4(11)T4), the route-map option of the neighbor fall-over command that I've described in my March IP Corner article, Designing Fast Converging BGP Networks, is not saved in the startup configuration. You have to reconfigure the BGP neighbors after each router reload.

Furthermore, a BGP neighbor does not inherit the fall-over route-map option from a peer session template.

Both issues are fixed in 12.4(15)T3.

Posted by Ivan Pepelnjak on Tuesday, March 11, 2008

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Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.