Cisco 2950 Software Configuration Guide - Page 312
by VLAN ID number, a range of VLANs separated by, a hyphen, or a series of VLANs separated by a comma.
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Configuring Spanning-Tree Features Chapter 14 Configuring STP Beginning in privileged EXEC mode, follow these steps to configure the port priority of an interface. This procedure is optional. Step 1 Step 2 Command configure terminal interface interface-id Step 3 spanning-tree port-priority priority Step 4 spanning-tree vlan vlan-id port-priority priority Step 5 Step 6 Step 7 end show spanning-tree interface interface-id or show spanning-tree vlan vlan-id copy running-config startup-config Purpose Enter global configuration mode. Specify an interface to configure, and enter interface configuration mode. Valid interfaces include physical interfaces and port-channel logical interfaces (port-channel port-channel-number). Configure the port priority for an interface. For priority, the range is 0 to 240 in increments of 16. The default is 128. The lower the number, the higher the priority. Valid priority values are 0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, and 240. All other values are rejected. Configure the VLAN port priority for an interface. • For vlan-id, you can specify a single VLAN identified by VLAN ID number, a range of VLANs separated by a hyphen, or a series of VLANs separated by a comma. The range is 1 to 1005 when the SI is installed and 1 to 4094 when the EI is installed. For priority, the range is 0 to 240 in increments of 16. The default is 128. The lower the number, the higher the priority. Valid priority values are 0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, and 240. All other values are rejected. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. Note The show spanning-tree interface interface-id privileged EXEC command displays information only if the port is in a link-up operative state. Otherwise, you can use the show running-config interface privileged EXEC command to confirm the configuration. To return the interface to its default setting, use the no spanning-tree [vlan vlan-id] port-priority interface configuration command. For information on how to configure load sharing on trunk ports by using spanning-tree port priorities, see the "Load Sharing Using STP" section on page 17-22. 14-18 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
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