I am having trouble trying to figure out the selection via two route-reflectors (matching IGP costs). Hopefully someone can help with this. Thanks.
This is a BGP mini-lab I built in gns3.
What I have done (without any effect):
- raised/lowered bgp router-ids
- raised/lowered bgp cluster-ids
- raised/lowered OSPF router-ids
Here is the output after changing router-ids and cluster-ids:
Client-B(config)#do sh ip bgp 22.22.22.0
BGP routing table entry for 22.22.22.0/24, version 66
<snip>
Local
100.2.0.100 (metric 20) from 100.3.0.1 (111.111.111.111)
Origin IGP, metric 0, localpref 100, valid, internal
Originator: 22.22.22.22, Cluster list: 111.111.111.111
Local
10.2.0.100 (metric 20) from 10.3.0.1 (2.2.2.2)
Origin IGP, metric 0, localpref 100, valid, internal, best
Originator: 22.22.22.22, Cluster list: 2.2.2.2
Client-B(config)#do sh ip bgp 22.22.22.0
BGP routing table entry for 22.22.22.0/24, version 66
<snip>
Local
100.2.0.100 (metric 20) from 100.3.0.1 (1.1.1.1)
Origin IGP, metric 0, localpref 100, valid, internal
Originator: 22.22.22.22, Cluster list: 1.1.1.1
Local
10.2.0.100 (metric 20) from 10.3.0.1 (2.2.2.2)
Origin IGP, metric 0, localpref 100, valid, internal, best
Originator: 22.22.22.22, Cluster list: 2.2.2.2