From: MOLINA, MARTIN J (PBI) (mm1343@sbc.com)
Date: Wed Oct 23 2002 - 20:41:26 GMT-3
Without knowing your topology, it appears as if the path selected was
learned directly from an EBGP peer and the one with the lower metric
traversed an IBGP peer before it got to you in your local AS. Could it be
that you don't have sync disabled on this router and that is causing your
router to prefer the other path ? Just a guess. I could be wrong.
-----Original Message-----
From: jim.phillipo@guardent.com [mailto:jim.phillipo@guardent.com]
Sent: Wednesday, October 23, 2002 3:43 PM
To: ccielab@groupstudy.com
Subject: BGP route selection question
Why is BGP choosing the route to 133.133.133.0 via 151.51.112.2 when it has
a higher metric ?
bb2#sho ip bgp
BGP table version is 30, local router ID is 202.202.5.111
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* i121.121.1.0/24 151.51.111.111 0 100 0 i
*> 0.0.0.0 0 32768 i
* i121.121.2.0/24 151.51.111.111 0 100 0 i
*> 0.0.0.0 0 32768 i
* i121.121.3.0/24 151.51.111.111 0 100 0 i
*> 0.0.0.0 0 32768 i
*> 133.133.133.0/24 151.51.112.2 30 0 12 8723 4799 i
* i 151.51.111.1 10 100 0 12 8723 4799 i
*> 144.144.144.0/24 151.51.112.2 0 12 8723 i
* i 151.51.111.1 100 0 12 8723 i
*> 155.155.155.0/24 151.51.112.2 0 12 8723 4799 i
* i 151.51.111.1 100 0 12 8723 4799 i
*> 166.166.166.0/24 151.51.112.2 0 12 8723 i
* i 151.51.111.1 100 0 12 8723 i
*> 177.177.177.0/24 151.51.112.2 0 12 8723 4799 i
* i 151.51.111.1 100 0 12 8723 4799 i
*> 203.203.1.0 151.51.112.2 0 12 8723 4799
113 i
* i 151.51.111.1 100 0 12 8723 4799
113 i
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