Allied Telesis AT-S63 - Manual (Page 182)

Chapter 15: MSTP
182 Section II: Advanced Features
Enabling MSTP
The AT-9400 Series switch can support the three spanning tree protocols
STP, RSTP, and MSTP. However, only one spanning tree protocol can be
active on the switch at a time. So before you can enable a spanning tree
protocol, you must first select it as the active spanning tree protocol.
After you select it, you can then enable or disable it.
To select MSTP as the active spanning tree protocol and to enable or
disable it, perform the following procedure:
Note
Changing the active spanning tree protocol resets the switch.
1. From the home page, select Configuration.
The Configuration System page is displayed with the General tab
selected by default, as shown in Figure 5 on page 40.
2. From the Configuration menu, select the Layer 2 option.
The Layer 2 page is displayed with the MAC Address tab selected
by default, as shown in Figure 23 on page 90.
3. Select the Spanning Tree tab.
The Spanning Tree tab is shown in Figure 61.
Figure 61. Spanning Tree Tab (Configuration)
Note
If you do not want to change the active spanning tree protocol and
just want to enable or disable it, go to Step 5.