Reference v4.1.0 Instruction Manual

Network OS Command Reference 1249

53-1003115-01

spanning-tree shutdown

Enables or disables spanning tree on the interface.

Synopsis spanning-tree shutdown

no spanning-tree shutdown

Operands None

Defaults Spanning tree is not enabled in VCS Fabric mode. It is enabled in standalone mode.

Command Modes Interface subtype configuration mode

Description Use this command to disable spanning tree on the interface or VLAN.

• Once all of the interfaces have been configured for a VLAN, you can enable Spanning Tree

Protocol (STP) for all members of the VLAN with a single command. Whichever protocol is

currently selected is used by the VLAN. Only one type of STP can be active at a time.

• A physical interface (port) can be a member of multiple VLANs. For example, a physical port

can be a member of VLAN 1002 and VLAN 55 simultaneously. In addition, VLAN 1002 can

have STP enabled and VLAN 55 can have STP disabled simultaneously.

Usage Guidelines If xSTP is enabled over VCS, this command must be executed on all the RBridges.

Enter no spanning-tree shutdown to enable spanning tree on the interface or VLAN.

Vlan 1002 can not be enabled with the spanning-tree shutdown command while the device is in

VCS Fabric mode.

Examples To disable spanning tree on a specific interface:

switch(config)# interface tengigabitethernet 0/1

switch(conf-if-te-0/1)# spanning-tree shutdown

To enable spanning tree on VLAN 1002:

switch(config)# interface vlan 1002

switch(conf-if-vl-1002)# no spanning-tree shutdown