I'm currently using two Catalyst 3560 as L3 devices to build my GRE tunnel. Attached are 3 documents; GRE diagram, config on SA1router and config on MSrouter.
Question: Why do tunnel interfaces goes down when keepalives are set? When I remove the keepalives statement the tunnel interface automatically comes up.
Why does traffic still pass from 172.10.7.x to 172.10.8.x when the tunnel interfaces are down on both sides?
Thanks in advance.