Spanning-Tree Operation 
802.1D Spanning-Tree Protocol (STP) 
3.   If the Protocol Version is set to RSTP (as shown in figure 5-15), do the 
following: 
a.   Press [E] (E
dit) to move the cursor to the Protocol Version field. 
b.   Press the Space bar once to change the Protocol Version field to STP. 
c.   Press [Enter] to return to the command line. 
d.   Press 
[S] (for Save) to save the change and exit from the Spanning Tree 
Operation screen. you will then see a screen with the following: 
The asterisk indicates 
that you must reboot the 
switch to implement the 
configuration change 
from RSTP to STP. 
Figure 5-16.  Changing from RSTP to STP Requires a System Reboot 
e.  Press 
[0] (zero) to return to the Main Menu, then [6] to reboot the 
switch. 
f.  After you reboot the switch, enter the menu command at the CLI to 
return to the Main Menu, then select: 
2. Switch Configuration …
         4. Spanning Tree Operation 
You will then see the Spanning Tree screen with STP (802.1D) selected 
in the Protocol Version field (figure 5-17). 
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