Allied Telesis AT-S39 - Manual (Page 270)

Section III: Web Browser Management
270
Note
The aging time for BPDUs is different from the aging time used by
the MAC address table.
3. After you have made the desired changes, click Apply.
4. To adjust a port’s STP settings, click on the port in the switch image
and click Modify. You can select more than one port at a time.
The Port Spanning Tree Protocol menu in Figure 84 is displayed.
Figure 84 STP Port Configuration Menu
5. Adjust the settings as desired. The parameters are described below.
Participating
This parameter indicates whether the port is participating in the
spanning tree domain. You cannot change this value from a web
browser management session. It can be changed from a local or
Telnet management session, as explained in Configuring a Port’s
STP Settings on page 108.
Port Cost
The spanning tree algorithm uses the cost parameter to decide
which port provides the lowest cost path to the root bridge for
that LAN. The default values for this parameter are 100 for a 10
Mbps port, 10 for a 100 Mbps port, and 4 for a 1 Gbps port. The
range is 1 to 65535.