Allied Telesis AT-S39 - Manual (Page 285)

AT-S39 User’s Guide
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Enabling or Disabling STP or RSTP
The AT-S39 software supports STP and RSTP. Only one spanning tree
protocol can be active on the switch at a time. Before you can enable a
spanning tree protocol or configure its settings, you must first select it as
the active spanning tree protocol on the switch. The default active
spanning tree is RSTP.
Note
Changing the active spanning tree protocol resets the switch.
To select and enable a spanning tree protocol, or to disable spanning
tree, perform the following procedure:
1. From the Home page, select Configuration.
2. From the Configuration page, select Layer 2.
3. From the Layer 2 page, select the Spanning Tree tab.
The Spanning Tree tab is shown in Figure 87.
Figure 87 Spanning Tree Tab
Note
To select a new active spanning tree protocol, perform step 4. To
enable or disable spanning tree on the switch, perform step 5.