Hi, On Fri, Jan 20, 2017 at 05:10:56PM +0000, David Hubbard wrote: > Hello all, I have a setup where one BGP AS exists at two physical locations, > with an edge router at each location peered to different upstreams. The two > edge routers are interconnected with a 40gig and 10gig link, each with its > own interface/address, so there are two iBGP sessions between the same two > routers. The intent of the 10gig is only to be used as backup, and when I > first brought it up, the routers of course began treating them as equal cost > paths (from BGP perspective) and used both. The way I initially worked > around that was via a route map on both sides that assigns a higher > non-default weight to advertisements coming in via the iBGP session on the > 40gig link.
"The normal way" to do iBGP is "between loopbacks" and have an IGP
distribute loopback reachability across available links.
Which will automatically achieve what you're asking for :-)
gert
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