Hello all,

I am trying to do what I originally thought was a simple setup, but has quickly not become the case. We have a customer we want to ensure 100% uptime. They have a connection to our network and a connection to another ISPs network. On our network we gave them a static lease, on the other network they have a dynamic lease. We have one EoIP tunnel running to their ip on our network and originally tried doing PPTP with their dynamic ip.

I then put both interfaces into a Bridge and enabled RSTP. Massive broadcast storms ensued as loops were created. This being my first real experience with RSTP the only conclusion I could come to is that RSTP is not designed to handle multiple links between single switches/bridges.

So then I tried bonding them, but it appears that none of the failover methods work. Has anyone else here done this successfully or have any ideas?

Thanks!

Create two default routes giving one a bigger distance and assign check gateway with check ping. This will route traffic through the route with lower distance and if it should fall over traffic wilt be routed out the second route.

We need layer 2 transparency. Simply routing out and NATing won't do it for us.