Allied Telesis AT-S25 - Manual (Page 240)

Section III: Web Browser Management
240
The RSTP Settings window displayed in Figure 88 is displayed.
Figure 92 RSTP Settings Window
3. Enter or modify the RSTP settings as desired.
For description of the parameters in this window, refer to Table 8,
STP and RSTP Parameters on page 230.
4. Click Apply.
Note
All changes to a port’s RSTP settings, with the exception of port cost,
are activated immediately. A change to the port cost value requires
you to reset the switch. A new port cost value is not implemented
until the unit is reset.