Consider the following:
So redundant core, 2 routers MLAG to a set of switches. All ports are in the same one big bridge.
The goal is to plug single handoff providers into 1 of the 2 switches. So say ISP1 plugs into sw1, port 5, VLAN10.
To access this ISP on both routers, must I tag VLAN10 on a trunk port to access devices on sw2, or will ICCP take care of any tagged packets in/out over it's untagged vlan?
I ask as if traffic is coming in on sw1 but sw2 holds the only active MLAG members for one of the routers (assuming a failure state), will sw1 know to send via ICCP port or does it need a trunk port tagged to send it via.
This is all on 7.4 switches with Cisco ASR1000 routers
Thanks in advance for your help