Spanning-Tree Mode - Cisco Catalyst 2960-X Command Reference Manual
Layer 2
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Also See for Catalyst 2960-X:
- Security configuration manual (498 pages) ,
- Hardware installation manual (34 pages) ,
- Getting started manual (25 pages)
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spanning-tree mode
spanning-tree mode
To switch between per-VLAN Spanning Tree+ (PVST+), Rapid-PVST+, and Multiple Spanning Tree (MST)
modes, use the spanning-tree mode command in global configuration mode. To return to the default settings,
use the no form of this command.
spanning-tree mode {pvst| mst| rapid-pvst}
no spanning-tree mode
Syntax Description
pvst
mst
rapid-pvst
Command Default
The default mode is PVST+.
Command Modes
Global configuration
Command History
Release
Cisco IOS 15.0(2)EX
Usage Guidelines
Only one mode can be active at a time.
All stack members run the same spanning-tree mode.
Caution
Be careful when using the spanning-tree mode command to switch between PVST+, Rapid-PVST+, and
MST modes. When you enter the command, all spanning-tree instances are stopped for the previous mode
and are restarted in the new mode. Using this command may cause disruption of user traffic.
Examples
This example shows how to enable MST mode:
Switch(config)# spanning-tree mode mst
This example shows how to return to the default mode (PVST+):
Switch(config)# no spanning-tree mode
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
90
Enables PVST+ mode.
Enables MST mode.
Enables Rapid-PVST+ mode.
Modification
This command was introduced.
Layer 2 Commands
OL-29043 -01
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