Spanning Tree Interface Settings - Cisco Small Business 200 Series Administration Manual

Spanning Tree

Spanning Tree Interface Settings

Designated Root:
• Bridge ID—The bridge priority concatenated with the MAC address of the device.
• Root Bridge ID—The Root Bridge priority concatenated with the MAC address of the Root Bridge.
• Root Port—The port that offers the lowest cost path from this bridge to the Root Bridge. (This is
significant when the bridge is not the root.)
• Root Path Cost—The cost of the path from this bridge to the root.
• Topology Changes Counts—The total number of STP topology changes that have occurred.
• Last Topology Change—The time interval that elapsed since the last topology change occurred. The
time appears in a days/hours/minutes/seconds format.
STEP 3
Spanning Tree Interface Settings
The STP Interface Settings page enables you to configure STP on a per-port basis, and to view the
information learned by the protocol, such as the designated bridge.
The defined configuration entered is valid for all flavors of the STP protocol.
To configure STP on an interface:
STEP 1
STEP 2
STEP 3
• Interface—Select the Port or LAG on which Spanning Tree is configured.
• STP—Enables or disables STP on the port.
• Edge Port—Enables or disables Fast Link on the port. If Fast Link mode is enabled on a port, the port
is automatically set to Forwarding state when the port link is up. Fast Link optimizes the STP protocol
convergence. The options are:
- Enable—Enables Fast Link immediately.
- Auto—Enables Fast Link a few seconds after the interface becomes active. This allows STP to
resolve loops before enabling Fast Link.
Cisco Small Business 200 Series Smart Switch Administration Guide
Click Apply. The STP Global settings are written to the Running Configuration file.
Click Spanning Tree > STP Interface Settings.
Select an interface and click Edit.
Enter the parameters
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