Troubleshooting BGP Neighbor Adjacency

[lagapidis (Lazarus Agapidis)]

Hello Juan

Take a look at this post:

EBGP Multihop

Hello Chris Essentially, if you use the FastEthernet interfaces to interconnect BGP, then the routers are considered directly connected and you wouldn’t need to use multihop. However, because we are using two redundant links to connect the two routers, if we use the fastEtherent interfaces, and one link goes down, then the BGP connection between them will also go down, thus rendering the redundant link unusable. This is why it is preferable to use the loopback interfaces. However, If you use…

I hope this has been helpful!

Laz