D-Link DES-3252P - Web Smart Switch, Install Manual

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Configuring Spanning Tree
Defining STP on Interfaces
Page 95
Defining STP on Interfaces
Network administrators can assign STP settings to specific interfaces using the STP Interface Page . The Global
LAGs section displays the STP information for Link Aggregated Groups. To assign STP settings to an interface:
1. Click Advanced Setup > Spanning Tree > STP > Interface Settings. The STP Interface Page opens:
Figure 51: STP Interface Page
The STP Interface Page contains the following fields:
•
Port — The interface for which the information is displayed.
•
STP — Indicates if STP is enabled on the port. The possible field values are:
–
Enabled — Indicates that STP is enabled on the port.
–
Disabled — Indicates that STP is disabled on the port.
•
Fast Link — Indicates if Fast Link is enabled on the port. If Fast Link mode is enabled for a port, the Port
State is automatically placed in the Forwarding state when the port link is up. Fast Link optimizes the STP
protocol convergence. STP convergence can take 30-60 seconds in large networks.
•
Port State — Displays the current STP state of a port. If enabled, the port state determines what forwarding
action is taken on traffic. Possible port states are:
–
Disabled — Indicates that STP is currently disabled on the port. The port forwards traffic while learning
MAC addresses.
–
Blocking — Indicates that the port is currently blocked and cannot forward traffic or learn MAC
addresses. Blocking is displayed when Classic STP is enabled.
•
Port Role — Displays the port role assigned by the STP algorithm to provide to STP paths. The possible field
values are:
–
Root — Provides the lowest cost path to forward packets to the root switch.
–
Designated — The port or LAG through which the designated switch is attached to the LAN.
–
Alternate — Provides an alternate path to the root switch from the root interface.