Configuring The Device Priority - HP 3600 v2 series Configuration Manual

bridge. If you have specified multiple secondary root bridges for an instance, when the root bridge fails,
the secondary root bridge with the lowest MAC address is selected as the new root bridge.
Configuring the current device as the root bridge of a specific spanning tree
Follow these steps to configure the current device as the root bridge of a specific spanning tree:
To do...
Enter system view
Configure the current device as the
root bridge (in STP/RSTP mode)
Configure the current device as the
root bridge (in PVST mode)
Configure the current device as the
root bridge (in MSTP mode)
Configuring the current device as a secondary root bridge of a specific spanning tree
Follow these steps to configure the current device as a secondary root bridge of a specific spanning tree:
To do...
Enter system view
Configure the current device as a secondary
root bridge (in STP/RSTP mode)
Configure the current device as a secondary
root bridge (in PVST mode)
Configure the current device as a secondary
root bridge (in MSTP mode)
NOTE:
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 the current device as the root bridge by setting the device priority to 0. For the device
•
priority configuration, see "Configuring the device priority."

Configuring the device priority

Device priority is a factor in spanning tree calculation. 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.
Follow these steps to configure the priority of a device in a specified MSTI:
To do...
Enter system view
Configure the priority of the current
device (in STP/RSTP mode)
Configure the priority of the current
device (in PVST mode)
Use the command...
system-view
stp root primary
stp vlan vlan-list root primary
stp [ instance instance-id ] root
primary
Use the command...
system-view
stp root secondary
stp vlan vlan-list root secondary
stp [ instance instance-id ] root
secondary
Use the command...
system-view
stp priority priority
stp vlan vlan-list priority priority
78
Remarks
—
Required
Use any command.
By default, a device does not
function as the root bridge.
Remarks
—
Required
Use any command.
By default, a device does
not function as a
secondary root bridge.
Remarks
—
Required
Use any command.
32768 by default.