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Cisco Wireless LAN Controller Configuration Guide
OL-8335-02
Chapter3 Configuring Ports and Interfaces
Configuring Ports
Step 9 Click Save Configuration to save your changes.
Using the CLI to Configure Spanning Tree Protocol
Follow these steps to configure STP using the CLI.
Step 1 Enter show spanningtree port and show spanningtree switch to view the current STP status.
Step 2 If STP is enabled, you must disable it before you can change STP settings. Enter config spanningtree
switch mode disable to disable STP on all ports.
Step 3 Enter one of these commands to configure the STP port administrative mode:
• config spanningtree port mode 802.1d {port-number | all}
• config spanningtree port mode fast {port-number | all}
• config spanningtree port mode off {port-number | all}
Step 4 Enter one of these commands to configure the STP port path cost on the STP ports:
• config spanningtree port pathcost 1-65535 {port-number | all}—Specifies a path cost from 1 to
65535 to the port.
• config spanningtree port mode pathcost auto {port-number | all}—Enables the STP algorithm to
automatically assign the path cost. This is the default setting.
Step 5 Enter config spanningtree port priority 0-255 port-number to configure the port priority on STP ports.
The default priority is 128.
Step 6 If necessary, enter config spanningtree switch bridgepriority 0-65535 to configure the controller’s
STP bridge priority. The default bridge priority is 32768.
Step 7 If necessary, enter config spanningtree switch forwarddelay 4-30 to configure the controller’s STP
forward delay in seconds. The default forward delay is 15 seconds.
Step 8 If necessary, enter config spanningtree switch hellotime 1-10 to configure the controller’s STP hello
time in seconds. The default hello time is 2 seconds.
Step 9 If necessary, enter config spanningtree switch maxage 6-40 to configure the controller’s STP maximum
age. The default maximum age is 20 seconds.
Hello Time (seconds) The length of time that the controller broadcasts hello messages to
other controllers.
Options:1 to 10 seconds
Default: 2 seconds
Forward Delay (seconds) The length of time that each of the listening and learning states lasts
before the port begins forwarding.
Options: 4 to 30 seconds
Default: 15 seconds
Table 3-7 Controller Spanning Tree Parameters (continued)
Parameter Description