C
HAPTER
32
| Spanning Tree Commands
– 804 –
mst priority This command configures the priority of a spanning tree instance. Use the
no form to restore the default.
SYNTAX
mst instance-id priority priority
no mst instance-id priority
instance-id - Instance identifier of the spanning tree.
(Range: 0-4094)
priority - Priority of the a spanning tree instance.
(Range: 0-61440 in steps of 4096; Options: 0, 4096, 8192, 12288,
16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056,
49152, 53248, 57344, 61440)
DEFAULT SETTING
32768
COMMAND MODE
MST Configuration
COMMAND USAGE
â—† MST priority is used in selecting the root bridge and alternate bridge of
the specified instance. The device with the highest priority (i.e., lowest
numerical value) becomes the MSTI root device. However, if all devices
have the same priority, the device with the lowest MAC address will
then become the root device.
â—† You can set this switch to act as the MSTI root device by specifying a
priority of 0, or as the MSTI alternate device by specifying a priority of
16384.
EXAMPLE
Console(config-mstp)#mst 1 priority 4096
Console(config-mstp)#
mst vlan This command adds VLANs to a spanning tree instance. Use the no form to
remove the specified VLANs. Using the no form without any VLAN
parameters to remove all VLANs.
SYNTAX
[no] mst instance-id vlan vlan-range
instance-id - Instance identifier of the spanning tree.
(Range: 0-4094)
vlan-range - Range of VLANs. (Range: 1-4093)
DEFAULT SETTING
none
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