root-id
To set the identifier of the root bridge for BPDUs sent from a port and an optional startup-value, use the
root-id command in the MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN
configuration and PVRSTAG VLAN configuration modes.
root-id id [startup-value startup-id]
Syntax Description
Sets the root bridge ID (MAC address) to set in the BPDUs.
id
Specifies an alternate value to use when the interface first comes up, while
the preempt delay timer is running.
startup-value
Sets the startup root ID.
startup-id
Command Default
The MAC address of the region root switch. If the startup value is not specified while the standard value is,
the startup value defaults to the standard value. For MSTAG and REPAG, the default is the bridge ID. For
PVSTAG and PVRSTAG, the default is 0000.0000.0000.
Command Modes
MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration, PVRSTAG
VLAN configuration
Command History
ModificationRelease
This command was introduced.Release 3.7.1
This command was supported in the PVSTAG VLAN and PVRSTAG
VLAN configuration modes.
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 (PVSTAG and PVRSTAG only)
read, writeinterface (MSTAG and REPAG only)
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
6.1.x
575
Multiple Spanning Tree Protocol Commands
root-id
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