change spanning-tree mode to PVST+ from MST

[johnsonyu]

Hi,

I wonder if someone can help me on this.

I am trying to set the spanning-tree mode to pvst+ on c4948. it is currently running MST and there is no options except for MST to select in spanning-tree mode command.

Thanks for any info

[chris · Accepted solution]

You need a different IOS it's not in your image, crazy I know!

Sent from Cisco Technical Support iPhone App

[johnsonyu]

Thanks a lot. After upgrading IOS, it works fine.