Allied Telesis AT-S25 - Manual (Page 228)

Section III: Web Browser Management
228
Enabling or Disabling STP or RSTP
An AT-8300 Series stack can support STP and RSTP. Only one spanning
tree protocol can be active on a stack at a time. Before you can enable a
spanning tree protocol, you must first select it as the active spanning
tree protocol. Once selected, you can then enable or disable it.
To select the active spanning tree protocol and to enable or disable it,
perform the following procedure:
1. From the Home page, select Configuration.
2. From the Configuration page, select Layer 2 tab.
3. From the Layer 2 page, select the Spanning Tree tab.
The Spanning Tree window in Figure 92 is displayed.
Figure 92 Configuration - Spanning Tree Window
4. To change the active spanning tree protocol on the switch, click STP
or RSTP in the Active Protocol Version section of the window. The
default is RSTP.
5. To enable or disable spanning tree, click the Enable Spanning Tree
check box. A check indicates that the feature is enabled while no
check indicates that the feature is disabled. The default is disabled.
Note
Only one spanning tree protocol can be active on a stack at a time.