I have a remote office with to WS-C4510R-E as core switches witch is connected via an etherchannel (trunk). All access switches have one connection to each core. And here we are running GLBP.
Today we have one layer 2 connection to our main site and we are running OSPF over that connection. What do we need to do if we want to connect an additional layer 2 connection. One to each core switch?