D-Link D DXS-3227 DXS-3227, Web/Installation Manual

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Configuring Spanning Tree
Defining STP on Interfaces
Page 156
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 98: STP Interface Page
The STP Interface Page contains the following fields:
•
Port — The interface for which the information is displayed.
•
STP Status — 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
3RUW
— Indicates if Fast Link is enabled on the port. If Fast Port 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.
•
Root Guard — Prevents devices outside the network core from being assigned the spanning tree root.
•
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.
•
Speed — Indicates the speed at which the port is operating.
•
Path Cost — Indicates the port contribution to the root path cost. The path cost is adjusted to a higher or
lower value, and is used to forward traffic when a path is re-routed.