Reference v4.1.0 Instruction Manual

Network OS Command Reference 1243

53-1003115-01

spanning-tree instance

Sets restrictions for the port of particular MSTP instances.

Synopsis spanning-tree instance instance_id [cost cost | priority priority| restricted-role | restricted-tcn]

no spanning-tree instance instance_id

Operands instance_id Specifies the MSTP instance. Valid values range from 1 through 32.

cost cost Specifies the path-cost for a port. Valid values range from 1

through 20000000.

priority priority Specifies the port priority for a bridge in increments of 16. Valid values

range from 0 through 240.

restricted-role Specifies to restrict the role of a port.

restricted-tcn Specifies to restrict the propagation of the topology change notifications

from a port.

Defaults The path-cost value is 2000 on a 10-gigabit Ethernet interface.

Command Modes Interface subtype configuration mode

Description Use this command to set restrictions for a port in a particular MSTP instance.

Usage Guidelines Use this command for MSTP-specific configurations.

If xSTP is enabled over VCS, this command must be executed on all RBridge nodes.Enter no

spanning-tree instance instance_id to remove the instance.

Examples To set restrictions for the port of MSTP instance 1 with the cost of 40000:

switch(config)# interface tengigabitethernet 0/1

switch(conf-if-te-0/1)# spanning-tree instance 1 cost 40000