I'm hooking two cisco switches together via a crossover cable. For example, on Switch A port Gi3/15 I have Spanning-tree BPDU enable.
It will be connected to Gi4/18 on Switch B. I have switch B in VTP Transparent mode. Why is it that switch A keeps putting it's port Gi3/15 in ERR-Disabled everytime I connect the two switches?
It works when I remove the Spanning-tree BPDU enable on Switch A so that's how I know BPDU's are causing it.
I thought since switch B is in VTP transparent mode, it won't send out BPDUs.