I have a WS-C3524-PWR-XL I'd like to bring in to temporary service, and need to migrate it from STP to PVST. Does anybody know the command(s) to do this? Usually it's "spanning-tree mode pvst", but even with the latest IOS I don't have that option:
forward-time Set a Spanning Tree FORWARD Interval
hello-time Set a Spanning Tree HELLO Interval
max-age Set a Spanning Tree MAX AGE Interval
portfast Allow a change from blocking to forwarding
priority Set a Spanning Tree Priority
protocol Spanning tree protocol type
uplinkfast Enable UplinkFast Feature
vlan VLAN Switch Spanning Trees
The IOS version is 12.0(5)WC17
On those switches, there is a difference between the number of vlans supported and the number of STP instances supported.
Doing a google search, I found this page, that states that the 3500XL supports 64 stp instances and 250 vlans.