Does anyone have any idea what P2P self-looped means?
I have a 3560 acting as a router, and a number of vlan virtual interfaces defined. The only port that carries those vlans is a single trunked port. Yesterday, that port suddenly moved to a spanning tree blocked state.
The switch thinks it is root, and with only one way in and out of the switch, it should never block those ports anyway. Spanning tree was left as the default configuration.
I have turned off STP for now, which has brought the port backup, however I am getting a lot of packet loss and suspect whatever caused the strange port state is still causing problems somewhere.
Any thoughts appreciated.