Configuring The Current Device As The Root Bridge Of A Specific Spanning Tree; Configuring The Current Device As A Secondary Root Bridge Of A Specific Spanning Tree; Configuring The Device Priority - HP 6125XLG Configuration Manual

If you specify multiple secondary root bridges for the instance, the secondary root bridge with the
•
lowest MAC address is given priority.
If you do not specify a secondary root bridge, a new root bridge is calculated.
•
You can specify one root bridge for each spanning tree, regardless of the device priority settings. Once
you specify a device as the root bridge or a secondary root bridge, you cannot change its priority.
You can configure a device as the root bridge by setting the device priority to 0. For the device priority
configuration, see
Configuring the current device as the root bridge of a specific
spanning tree
Step
1. Enter system view.
2. Configure the current
device as the root
bridge.
Configuring the current device as a secondary root bridge of a
specific spanning tree
Step
1. Enter system view.
2. Configure the current
device as a secondary root
bridge.

Configuring the device priority

Device priority is a factor in calculating the spanning tree. The priority of a device determines whether the
device can be elected as the root bridge of a spanning tree. A lower value indicates a higher priority.
You can set the priority of a device to a low value to specify the device as the root bridge of the spanning
tree. A spanning tree device can have different priorities in different spanning trees.
During root bridge selection, if all devices in a spanning tree have the same priority, the one with the
lowest MAC address is selected. You cannot change the priority of a device after it is configured as the
root bridge or as a secondary root bridge.
"Configuring the device
Command
system-view
•
In STP/RSTP mode:
stp root primary
•
In PVST mode:
stp vlan vlan-id-list root primary
•
In MSTP mode:
stp [ instance instance-list ] root primary
Command
system-view
•
In STP/RSTP mode:
stp root secondary
•
In PVST mode:
stp vlan vlan-id-list root secondary
•
In MSTP mode:
stp [ instance instance-list ] root
secondary
priority."
94
Remarks
N/A
By default, a device does not
function as the root bridge.
Remarks
N/A
By default, a device does not
function as a secondary root
bridge.