Allied Telesis AT-S95 WEB - Manual (Page 140)

Page 140
Allied Telesis
AT-S95 Management Software Web Browser Interface User’s Guide
• Forward Transitions — Indicates the number of times the port has changed from Forwarding state to
Blocking state.
• Trunk — Indicates the trunk to which the port belongs.
3. Select the Unit, in the STP Interface Configuration section.
4. Click Modify. The Spanning Tree Configuration Page for ports or for trunks opens:
Figure 92: Spanning Tree Configuration Page
In addition to the STP Interface Configuration Page, the port-level Spanning Tree Configuration Page contains the
following fields:
• Default Path Cost — Select if the default path cost of the port is automatically set by the port speed and the
default path cost method.
5. Select Enable in the STP field.
6. Define the Port Fast, Enable Root Guard, Path Cost, Default Path Cost, and Priority fields.
7. Click Apply. STP is enabled on the interface, and the device is updated.
Configuring Rapid Spanning Tree
While Classic STP prevents Layer 2 forwarding loops in a general network topology, convergence can take
between 30-60 seconds. This time may delay detecting possible loops and propagating status topology changes.
Rapid Spanning Tree Protocol (RSTP) detects and uses network topologies that allow a faster STP convergence
without creating forwarding loops.