From: Troy Levin (troylevin@hotmail.com)
Date: Thu May 26 2005 - 17:12:30 GMT-3
Tim,
Did you try this command?
maximum-paths ibgp
To configure the number of number of equal-cost or unequal-cost routes that
internal BGP (iBGP) will install in the routing table, use the maximum-paths
ibgp command in router configuration mode. To restore the default value, use
the no form of this command.
HTH,
Troy
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "Group Study" <ccielab@groupstudy.com>
Sent: Thursday, May 26, 2005 3:54 PM
Subject: BGP load balancing
> Hi guys,
>
> R2 is learning a default route from 2 ibgp peers. I want R2 to load
> balance
> traffic to destinations beyond its ibgp peers between the 2 ibgp peers.
>
> I configured the command, maximum-paths 2, on R2, but the default route
> only
> shows up once in the route table although, as you can see, it's shown
> twice
> in the bgp table. Also note that R2 can ping both next hops shown in the
> bgp table.
>
> What am I missing?
>
> TIA, Tim
>
> R2#sh ip bgp sum
> BGP router identifier 150.7.2.2, local AS number 200
> BGP table version is 77, main routing table version 77
> 2 network entries using 202 bytes of memory
> 4 path entries using 192 bytes of memory
> 2 BGP path attribute entries using 120 bytes of memory
> 1 BGP AS-PATH entries using 24 bytes of memory
> 0 BGP route-map cache entries using 0 bytes of memory
> 0 BGP filter-list cache entries using 0 bytes of memory
> BGP using 538 total bytes of memory
> BGP activity 17/15 prefixes, 56/52 paths, scan interval 60 secs
>
> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
> State/PfxRcd
>
> 145.7.245.4 4 200 1306 1307 77 0 0 00:00:54
> 2
> 145.7.245.5 4 200 812 817 77 0 0 00:02:02
> 2
> R2#sh ip bgp
> BGP table version is 77, local router ID is 150.7.2.2
> 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
> *>i0.0.0.0 145.7.47.7 0 100 0 100 i
> * i 150.7.3.3 0 100 0 100 i
> *>i145.7.0.0 145.7.47.7 0 100 0 100 i
> * i 150.7.3.3 0 100 0 100 i
> R2#sir bgp
> 145.7.0.0/16 is variably subnetted, 9 subnets, 3 masks
> B 145.7.0.0/16 [200/0] via 145.7.47.7, 00:01:26
> B* 0.0.0.0/0 [200/0] via 145.7.47.7, 00:01:26
> R2#f bgp
> router bgp 200
> no synchronization
> bgp router-id 150.7.2.2
> bgp log-neighbor-changes
> neighbor 145.7.245.4 remote-as 200
> neighbor 145.7.245.4 route-reflector-client
> neighbor 145.7.245.5 remote-as 200
> neighbor 145.7.245.5 route-reflector-client
> maximum-paths 2
> no auto-summary
>
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This archive was generated by hypermail 2.1.4 : Fri Jun 03 2005 - 10:12:02 GMT-3