Allied Telesis AT-S39 - Manual (Page 207)

AT-S39 User’s Guide
207
Note
The aging time for BPDUs is different from the aging time used by
the MAC address table.
6. After you have made the desired changes, click Apply.
7. 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 window in Figure 66 is displayed.
Figure 66 Spanning Tree Protocol Window - Port Configuration
8. Adjust the settings as desired. The parameters are described below.
Participating
This parameter indicates whether the port is participating in the
spanning tree domain. This value cannot be changed.
Path 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.
Port Priority
This parameter is used as a tie breaker when two or more ports are
determined to have equal costs to the root bridge. The default
value for priority is 128. The range is 0-255.