Using The Gui To Configure Spanning Tree Protocol - Cisco SD2008T-NA Configuration Manual

Configuring Ports
The controller maintains a separate spanning-tree instance for each active VLAN configured on it. A
bridge ID, consisting of the bridge priority and the controller's MAC address, is associated with each
instance. For each VLAN, the controller with the lowest controller ID becomes the spanning-tree root
for that VLAN.
STP is disabled for the controller's distribution system ports by default. The following sections provide
instructions for configuring STP for your controller using either the GUI or CLI.
STP cannot be configured for the controller in the Catalyst 3750G Integrated Wireless LAN Controller
Note
Switch.

Using the GUI to Configure Spanning Tree Protocol

Follow these steps to configure STP using the GUI.
Click Controller > Ports to access the Ports page (see
Step 1
Click Edit for the specific port for which you want to configure STP. The Port > Configure page appears
Step 2
(see
parameters.
Table 3-4
Table 3-4
Parameter
STP Port ID
STP State
STP Port Designated Root
STP Port Designated Cost
STP Port Designated Bridge
Cisco Wireless LAN Controller Configuration Guide
3-24
Figure 3-9). This page shows the STP status of the port and enables you to configure STP
interprets the current STP status of the port.
Port Spanning Tree Status
Figure
Description
The number of the port for which STP is enabled or disabled.
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.
The unique identifier of the root bridge in the configuration BPDUs.
The path cost of the designated port.
The identifier of the bridge that the port considers to be the designated
bridge for this port.
Chapter 3 Configuring Ports and Interfaces
3-8).
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