On a Cisco 6503 switch, if I run "show spanning-tree summary", it says, "Switch is in pvst mode".
How do I know if this is PVST or PVST+? Would it have specifically said PVST+? Or does it depend on the version of the switch, where PVST could actually mean PVST+?
Best Answer
Cisco uses PVST for ISL trunks and PVST+ for 802.11q trunks. They operate transparently with each other.