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spanning-tree vlan priority
Use the spanning-tree vlan priority command to configure the bridge priority
of a VLAN. The bridge priority is combined with the MAC address of the
switch and is used to select the root bridge for the VLAN. Use the no form of
the command to return the priority to the default value.
Syntax
spanning-tree vlan {vlan-list} priority priority
no spanning-tree vlan {vlan-list} priority
•
vlan-list–A single VLAN ID or a list of VLAN IDs in comma delineated or
range format with no embedded blanks. Range 1-4093.
•
priority –The bridge priority advertised when combined with the switch
MAC address. Range 0-61440.
Default Configuration
The default bridge priority is 32768.
Valid values are 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768,
36864, 40960, 45056, 49152, 53248, 57344, and 61440. The default value is
32768.
If the value configured is not among the specified values, it will be rounded
off to the nearest valid value.
Command Modes
Global Configuration mode
User Guidelines
This command can be configured even if the switch is configured for
MST(RSTP) mode. It is only used when the switch is configured for STP-PV
or RSTP-PV modes.
The root bridge for a VLAN should be carefully selected to provide optimal
paths for traffic through the network. Generally, this means selecting a switch
that is well-connected with other switches in the network.
Layer 2 Switching Commands
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