ZyXEL Communications 4728F User Manual

Chapter 13 Spanning Tree Protocol

XGS-4526/4528F/4728F User’s Guide

Click Advanced Application > Spanning Tree Protocol in the navigation panel 
to display the status screen as shown next. See 

 for 

more information on RSTP.

Active

Select this check box to activate RSTP on this port. 

Edge

Select this check box to configure a port as an edge port when it is 
directly attached to a computer. An edge port changes its initial STP 
port state from blocking state to forwarding state immediately without 
going through listening and learning states right after the port is 
configured as an edge port or when its link status changes.

Note: An edge port becomes a non-edge port as soon as it receives 

a Bridge Protocol Data Unit (BPDU).

Priority

Configure the priority for each port here.

Priority decides which port should be disabled when more than one port 
forms a loop in a switch. Ports with a higher priority numeric value are 
disabled first. The allowed range is between 0 and 255 and the default 
value is 128.

Path Cost 

Path cost is the cost of transmitting a frame on to a LAN through that 
port. It is recommended to assign this value according to the speed of 
the bridge. The slower the media, the higher the cost - see 

 for more information.

Apply

Click Apply to save your changes to the Switch’s run-time memory. The 
Switch loses these changes if it is turned off or loses power, so use the 
Save link on the top navigation panel to save your changes to the non-
volatile memory when you are done configuring.

Cancel

Click Cancel to begin configuring this screen afresh.

Table 29   Advanced Application > Spanning Tree Protocol > RSTP  (continued)