Cisco Nexus 5000 Series Command Reference Release 4.0(1a)N2(1) (OL-16599-01, March 2009)

Send comments to [e-mail]
2-56
Cisco Nexus 5000 Series Command Reference
OL-16599-01
Chapter 2 Ethernet Commands
spanning-tree mode
spanning-tree mode
To switch between Rapid per VLAN Spanning Tree Plus (Rapid PVST+) and Multiple Spanning Tree
(MST) Spanning Tree Protocol (STP) modes, use the spanning-tree mode command. To return to the
default settings, use the no form of this command.
spanning-tree mode {rapid-pvst | mst}
no spanning-tree mode
Syntax Description
Command Default Rapid PVST+.
Command Modes Configuration mode
Command History
Usage Guidelines You cannot simultaneously run MST and Rapid PVST+ on the switch.
Caution Be careful when using the spanning-tree mode command to switch between Rapid PVST+ and MST
modes. When you enter the command, all STP instances are stopped for the previous mode and are
restarted in the new mode. Using this command may cause the user traffic to be disrupted.
Examples This example shows how to switch to MST mode:
switch(config)# spanning-tree mode mst
switch(config-mst)#
Related Commands
rapid-pvst Sets the STP mode to Rapid PVST+.
mst Sets the STP mode to MST.
Release Modification
4.0(0)N1(1a) This command was introduced.
Command Description
show spanning-tree
summary
Displays the information about the spanning tree configuration.