Configuring The Switch Priority Of A Vlan - Cisco WS-C3550-12G Software Configuration Manual

Configuring Basic STP Features

Configuring the Switch Priority of a VLAN

You can configure the switch priority and make it more likely that the switch will be chosen as the root
switch.
Note Exercise care when using this command. For most situations, we recommend that you use the
spanning-tree vlan vlan-id root primary and the spanning-tree vlan vlan-id root secondary global
configuration commands to modify the switch priority.
Beginning in privileged EXEC mode, follow these steps to configure the STP switch priority of a VLAN:
Command
Step 1 configure terminal
Step 2
spanning-tree vlan vlan-id priority priority
Step 3 end
Step 4
show spanning-tree vlan vlan-id bridge [brief]
Step 5
copy running-config startup-config
To return the switch to its default setting, use the no spanning-tree vlan vlan-id priority global
configuration command.
Catalyst 3550 Multilayer Switch Software Configuration Guide
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Purpose
Enter global configuration mode.
Configure the switch priority of a VLAN.
• For vlan-id, the range is 1 to 1005. Do not enter leading
zeros.
• For priority, the range is 0 to 61440 in increments of
4096; the default is 32768. The lower the number, the
more likely the switch will be chosen as the root switch.
Valid priority values are 4096, 8192, 12288, 16384,
20480, 24576, 28672, 32768, 36864, 40960, 45056,
49152, 53248, 57344, and 61440. All other values are
rejected.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Chapter 10 Configuring STP
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