Tuesday, July 24, 2018

Dual-homed mpls vpn connection

One of our customers has asked for an additional circuit back to our DC so I’ve been looking at setting up the config so they use one as primary and the second only if the primary is down.

First thing I have seen is that if I use the same local-as on both bgp session then neither of our internal routers will see the route from each other. Ebgp sessions are fine.

Even if I disable the interface so the ebgp session goes down it does not see the route from the other. I have to delete the bgp config where I state the local-as then it can see the routes from the other internal router.

If I use a different local-as on each then I don’t get this problem.

Is this by design or am I missing something?



No comments:

Post a Comment