Allied Telesis AT-S63 - Manual (Page 264)

Chapter 16: STP and RSTP
264 Section II: Advanced Features
The Configure STP Port Settings menu is shown in Figure 81.
Figure 81. Configure STP Port Settings Menu
7. Adjust the following parameters as needed.
Note
A change to the port priority parameter takes effect 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.
1 - 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 range is 0
to 240 in increments of 16. The default value is 8 (priority value
128). For a list of the increments, refer to Table 17, ”Port Priority
Value Increments” on page 254.
2 - 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 range is 0 to 65,535. The default setting is Automatic
Update, which sets port cost depending on the speed of the port.
The Automatic Update default values are shown in Table 13 on
page 252 andTable 14 on page 253.
8. After making changes, type R until you return to the Main Menu. Then
type S to select Save Configuration Changes.
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Configure STP Port Settings
Configuring Ports 4-6
1 - Port Priority ..... 128
2 - Port Cost ......... Automatic-Update
R - Return to Previous Menu
Enter your selection?