[130241] in North American Network Operators' Group
BGP next-hop
daemon@ATHENA.MIT.EDU (Heath Jones)
Thu Sep 30 05:49:28 2010
Date: Thu, 30 Sep 2010 10:49:17 +0100
From: Heath Jones <hj1980@gmail.com>
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi all,
Is there an easy way to see which iBGP routes are not being selected
due to next-hop not being in IGP?
Before and after IGP route added shown below, note both are marked as valid..
-- BEFORE IGP--
AS5000_LA#show ip bgp
BGP table version is 5, local router ID is 10.0.0.5
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* i100.10.0.0/16 10.0.0.10 0 100 0 2000 3000 ?
*> 10.0.0.6 0 1000 3000 3000 ?
-- AFTER IGP--
AS5000_LA#show ip bgp
BGP table version is 6, local router ID is 10.0.0.5
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*>i100.10.0.0/16 10.0.0.10 0 100 0 2000 3000 ?
* 10.0.0.6 0 1000 3000 3000 ?
Cheers
Heath
ps. I've posted this to cisco-nsp also (a day ago) - so apologies in
advance if you are on both and seeing it twice.
