root-cost
To set the root path cost to sent in BPDUs from this interface, use the root-cost command in PVSTAG VLAN
configuration or PVRSTAG VLAN configuration mode.
root-cost cost [startup-value startup-cost]
Syntax Description
Sets the root path cost for the current port. The cost ranges between 0 to
4294967295.
cost
Specifies an alternate value to use when the interface first comes up, while
the preempt delay timer is running.
startup-value
Sets the startup cost.
startup-cost
Command Default
The default is 0. If a cost is configured but no startup value is configured, the startup value defaults to the
configured cost value. If no cost is configured, the startup value defaults to 1.
Command Modes
PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
ModificationRelease
This command was introduced.Release 4.0.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
Task ID
OperationsTask ID
read, writeethernet-services
Examples
The following example shows how to set the root path cost for the current port:
RP/0/RSP0/CPU0:router(config-pvrstag-if-vlan)# root-cost 1000000
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
6.1.x
573
Multiple Spanning Tree Protocol Commands
root-cost
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