Spanning-tree instance – Brocade Network OS Command Reference v4.1.0 User Manual

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Network OS Command Reference

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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