North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: BGP Configuration Problem
> > We are having a BGP configuration problem which looks trivial but is not > > working the way we expect. I'm going to throw myself on the mercy of > > the court and ask for help. > > > > There are three routers A, B and C. These are in ASa, ASb and ASc, > > respectively. B imports 10.1.64/19 from A and 10.1/16 from C. What > > we were expecting was for B's route to the /19 to be via A, just because > > this is the more specific route. However, the only route (both in the > > BGP and routing tables on B) is for the entire /16 via C. > > Even if it isn't the best route, you should see the table of choices > (in a Crisco) if you do 'sho ip bgp x.y.z.0'. You'll only see the most > specific choices that match with that - you could also do a 'sho ip bgp' and > watch (presumably 10/8 should be near the top) for 10.1.64.0's range to show up > and see what choices are presented. How about: show ip bgp 10.1.0.0 255.255.0.0 longer-prefixes - - - - - - - - - - - - - - - - -
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