Hi,
I have a small question regarding a redundant BGP (router + uplinks) setup.
This is the current situation:
R1:
/routing bgp peer
add name=IBGP remote-address=172.16.17.2 remote-as=11111
add in-filter=IPV4-IN name=R1ISP-1 out-filter=Own-subnets remote-address=xx.xx.xx.100 remote-as=11112
add in-filter=IPV4-IN name=R1ISP-2 out-filter=Own-subnets remote-address=xx.xx.xx.101 remote-as=11112
R2:
/routing bgp peer
add name=IBGP remote-address=172.16.17.1 remote-as=11111
add in-filter=IPV4-IN name=R2ISP-1 out-filter=Own-subnets remote-address=xx.xx.xx.102 remote-as=11112
add in-filter=IPV4-IN name=R2ISP-2 out-filter=Own-subnets remote-address=xx.xx.xx.102 remote-as=11112
Own AS in this example: 11111
Upstream ISP AS: 11112
Both routers are receiving two full internet tables from the Upstream ISP (11112) and one full table
from each other (the IBGP peer). I was wondering why i have connectivity issues once i disconnect
the IBGP? Both have an address in each subnet in one L2 domain.
Why do i need to have the IBGP?