off the top of my head If these paths were advertised at different times, this could result in this posting, or be the artifact of some load distribution.
At 03:16 PM 4/24/2002 -0400, Michael Bray wrote: >I have a router that is running BGP to two different providers... When >I show the bgp entry for two different routes, it shows that one >provider is selected for one route, and the other provider is selected >for the other route, even though they seem to have the same AS path >length from each provider. There isn't any difference as far as I can >tell for MED or local preference settings or anything like that... >The route on the bottom looks normal - its being chosen (I assume) >because the 64.*.*.* has the lower router ID (207.* instead of 208.*). >The first entry is the one that doesn't make sense to me - shouldn't it >also be selecting the 64.* router, by virtue of its lower ID? I see >that there are different values for the "version", but I'm not sure this >would have anything to do with it?? > >rtr#show ip bgp 64.170.96.0/19 >BGP routing table entry for 64.170.96.0/19, version 16127 >Paths: (2 available, best #2, table Default-IP-Routing-Table) > Not advertised to any peer > 4323 1239 5673 > 64.132.248.89 from 64.132.248.89 (207.67.76.17) > Origin IGP, localpref 100, valid, external > 3561 1239 5673 > 208.174.151.61 from 208.174.151.61 (208.172.66.20) > Origin IGP, localpref 100, valid, external, best > >rtr#show ip bgp 12.3.59.0 >BGP routing table entry for 12.3.59.0/24, version 742 >Paths: (2 available, best #2, table Default-IP-Routing-Table) > Not advertised to any peer > 3561 4513 17304 > 208.174.151.61 from 208.174.151.61 (208.172.66.20) > Origin IGP, localpref 100, valid, external > 4323 4513 17304 > 64.132.248.89 from 64.132.248.89 (207.67.76.17) > Origin IGP, localpref 100, valid, external, best > >ip classless >ip route 0.0.0.0 0.0.0.0 208.174.151.61 >ip route 0.0.0.0 0.0.0.0 64.132.248.89 >ip as-path access-list 78 permit ^$ > > >-Mike Bray >[EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42461&t=42456 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
