R3303-HP HSR6800 Routers Layer 2 - LAN Switching Configuration Guide

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Step Command Remarks
1. Enter system view.
system-view N/A
2. Configure the current
device as the root
bridge.
• In STP/RSTP mode:
stp root primary
• In MSTP mode:
stp [ instance instance-id ] root primary
Use one of the commands.
By default, a device does not
function as the root bridge.
Configuring the current device as a secondary root bridge of a
specific spanning tree
To configure the current device as a secondary root bridge of a specific spanning tree:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Configure the current
device as a secondary root
bridge.
• In STP/RSTP mode:
stp root secondary
• In MSTP mode:
stp [ instance instance-id ] root
secondary
Use one of the commands.
By default, a device does not
function as a secondary root
bridge.
Configuring the device priority
Priority is a factor in spanning tree calculations. The priority of a device determines whether the device
can be elected as the root bridge of a spanning tree. A lower numeric 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 MSTIs.
You cannot change the priority of a device after it is configured as the root bridge or as a secondary root
bridge.
During root bridge selection, if all devices in a spanning tree have the same priority, the one with the
lowest MAC address will be selected as the root bridge of the spanning tree.
To configure the priority of a device in a specified MSTI:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Configure the priority of
the current device.
• In STP/RSTP mode:
stp priority priority
• In MSTP mode:
stp [ instance instance-id ] priority
priority
Use one of the commands.
The default setting is 32768.