Enabling or disabling RPVST+ spanning tree

With the spanning tree mode set to RPVST+, you can do either of the following:

Enable or disable RPVST+ on all VLANs on the switch.
Enable or disable RPVST+ on specified VLANs that are RPVST+-enabled on the switch.

Syntax:


no spanning-tree [ enable | disable ]

To globally enable RPVST+ on all VLANs on the switch, use either of the following:


spanning-tree [enable]


no spanning-tree disable

To globally disable RPVST+ on all VLANs on the switch, use any of the following:


no spanning-tree


spanning-tree disable


no spanning-tree enable

NOTE:

This status will always be shown in show run to let you know whether spanning-tree is enabled. Having spanning tree present but not enabled will lead to a change in the existing factory default settings.

This command overrides the per-VLAN enable/disable command (below).

Syntax:


spanning-tree vlan <vid list> [ enable | disable ]

To enable RPVST+ on one or more VLANs on the switch, use either of the following:


spanning-tree vlan <vid list> enable


no spanning-tree vlan <vid list> disable

To disable RPVST+ on one or more VLANs on the switch, use any of the following:


no spanning-tree vlan <vid-list>


spanning-tree vlan <vid> disable


no spanning-tree vlan <vid-list> enable