We want to disable Spanning tree on a single port as it keeps blocking due to an error from a non Cisco device sending a q tagged BDPU on a non taged interface. To make sure there were no loops I shutdown all other interfaces and still this port goes down. I do not want to disable STP for the rest of the switch. How do I disable STP on this one port. This is on a 4507 running Native IOS 12.1
Any help appreciated.