Reference v4.1.0 Instruction Manual

1238 Network OS Command Reference

53-1003115-01

spanning-tree cost

Changes an interface's spanning-tree port path cost.

Synopsis spanning-tree cost cost

Operands cost Specifies the path cost for the Spanning Tree Protocol (STP) calculations.

Valid values range from 1 through 200000000.

Defaults The default path cost is 200000000.

Command Modes Interface subtype configuration mode

Description Use this command to configure the path cost for spanning-tree calculations.

Usage Guidelines Lower path cost indicates a greater chance of becoming root.

If xSTP is enabled over VCS, this command must be executed on all the RBridge nodes.

Examples To set the port cost to 128:

switch(config)# interface tengigabitethernet 0/1

switch(conf-if-te-0/1)# spanning-tree cost 128