Hello,
I was setting up a lab and I stumbled across this question. How do you advertise routes over a layer 2 trunk port? I have Cisco 1921 R1 that has a serial connection to R2, both routers are running OSPF and advertise each others known routes. Router1 has a channel-group configured as a trunk port to Router3 and Router3 has a unique VLAN 50 (not configured on Router1 - not using VTP). How do we advertise the route to VLAN 50 from Router1. Is it possible to use OSPF on a layer 2 link. I am also not able to configure a static route route on Router 1 to VLAN 50 for some reason.