In order to be candidates for multipath, paths to the same destination need to
have these characteristics equal to the best-path characteristics:
Weight
Local preference
AS-PATH length
Origin
MED
Your route #3 comes from AS123 while #1 & #2 are local
Consequently, 3 can't be considered for multipath
Best regards.
> Message du 25/07/12 C 17h38
> De : "Aaron"
> A : "Ccielab_at_groupstudy.com"
> Copie C :
> Objet : how can i use all 3 of these routes for load sharring?
>
> Any idea why I see 3 default routes in bgp but only 2 get put into rib? How
> would I get all 3 of these into rib?
>
>
>
> RP/0/RSP0/CPU0:9k#sh bgp vrf one 0.0.0.0
>
> Wed Jul 25 10:26:33.834 CDT
>
> BGP routing table entry for 0.0.0.0/0, Route Distinguisher: 10.101.0.10:1
>
> Versions:
>
> Process bRIB/RIB SendTblVer
>
> Speaker 1073639 1073639
>
> Last Modified: Jul 20 19:40:28.857 for 4d14h
>
> Paths: (3 available, best #2)
>
> Not advertised to any peer
>
> Path #1: Received by speaker 0
>
> Not advertised to any peer
>
> Local
>
> 10.101.0.1 (metric 3) from 10.101.0.1 (10.101.0.1)
>
> Received Label 16200
>
> Origin incomplete, metric 1, localpref 100, valid, internal,
> multipath, import-candidate, imported
>
> Received Path ID 0, Local Path ID 0, version 0
>
> Extended community: RT:10.101.0.1:1 OSPF route-type:0:5:0x1 OSPF
> router-id:1.2.3.17
>
> Path #2: Received by speaker 0
>
> Not advertised to any peer
>
> Local
>
> 10.101.0.2 (metric 2) from 10.101.0.2 (10.101.0.2)
>
> Received Label 16220
>
> Origin incomplete, metric 1, localpref 100, valid, internal, best,
> group-best, multipath, import-candidate, imported
>
> Received Path ID 0, Local Path ID 1, version 1073639
>
> Extended community: RT:10.101.0.2:1 OSPF route-type:0:5:0x1 OSPF
> router-id:1.2.3.21
>
> Path #3: Received by speaker 0
>
> Not advertised to any peer
>
> 123
>
> 2.4.6.45 from 2.4.6.45 (1.3.9.173)
>
> Origin IGP, localpref 100, valid, external, group-best
>
> Received Path ID 0, Local Path ID 0, version 0
>
> Extended community: RT:10.101.0.10:1
>
>
>
> RP/0/RSP0/CPU0:9k#sh rou vrf one 0.0.0.0
>
> Wed Jul 25 10:26:38.117 CDT
>
>
>
> Routing entry for 0.0.0.0/0
>
> Known via "bgp 64512", distance 200, metric 1, candidate default path,
> type internal
>
> Installed Jul 20 19:40:28.985 for 4d14h
>
> Routing Descriptor Blocks
>
> 10.101.0.1, from 10.101.0.1, BGP multi path
>
> Nexthop in Vrf: "default", Table: "default", IPv4 Unicast, Table Id:
> 0xe0000000
>
> Route metric is 1
>
> 10.101.0.2, from 10.101.0.2, BGP multi path
>
> Nexthop in Vrf: "default", Table: "default", IPv4 Unicast, Table Id:
> 0xe0000000
>
> Route metric is 1
>
> No advertising protos.
>
>
>
>
>
> Aaron
>
>
> Blogs and organic groups at http://www.ccie.net
>
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Received on Wed Jul 25 2012 - 17:51:13 ART
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