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Cisco Wireless LAN Controller Configuration Guide
OL-8335-02
Chapter3 Configuring Ports and Interfaces
Configuring Ports
Using the GUI to Configure Spanning Tree Protocol
Follow these steps to configure STP using the GUI.
Step 1 Click Controller > Ports to access the Ports page (see Figure 3-8).
Step 2 Click Edit for the specific port for which you want to configure STP. The Port > Configure page appears
(see Figure 3-9). This page shows the STP status of the port and enables you to configure STP
parameters.
Table 3-4 interprets the current STP status of the port.
Step 3 Table 3-5 lists and describes the port’s configurable STP parameters. Follow the instructions in the table
to make any desired changes.
Table 3-4 Port Spanning Tree Status
Parameter Description
STP Port ID The number of the port for which STP is enabled or disabled.
STP State The port’s current STP state. It controls the action that a port takes upon
receiving a frame.
Values: Disabled, Blocking, Listening, Learning, Forwarding, and
Broken
STP State Description
Disabled The port is not participating in spanning tree because the
port is shut down, the link is down, or STP is not enabled
for this port.
Blocking The port does not participate in frame forwarding.
Listening The first transitional state after the blocking state when
STP determines that the port should participate in frame
forwarding.
Learning The port prepares to participate in frame forwarding.
Forwarding The port forwards frames.
Broken The port is malfunctioning.
STP Port Designated Root The unique identifier of the root bridge in the configuration BPDUs.
STP Port Designated Cost The path cost of the designated port.
STP Port Designated Bridge The identifier of the bridge that the port considers to be the designated
bridge for this port.
STP Port Designated Port The port identifier on the designated bridge for this port.
STP Port Forward Transitions
Count
The number of times that the port has transitioned from the learning
state to the forwarding state.