Allied Telesis AT-S39 User Manual

Page 113

AT-S39 User’s Guide

113

The RSTP Port Configuration menu in Figure 32 is displayed.

Figure 32 Configure RSTP Port Settings Menu

6. Adjust the settings as needed. The parameters are explained below.

7. After making your changes, type S to select Save Configuration

Changes.

Note
All changes to a port’s RSTP settings, with the exception of port cost,
are activated 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 7, RSTP Port
Priority Value Increments on page 100.

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 20 000 000. The default setting is Auto-
detect, which sets port cost depending on the speed of the port.
Default values are 2 000 000 for 10 Mbps ports, 200 000 for a 100
Mbps ports, and 20 000 for one gigabit ports.

Allied Telesyn Ethernet Switch AT-8024

Configure RSTP Port Settings

Configuring Ports 4 to 4

1 - Port Priority ...... 128
2 - Port Cost .......... Auto Update
3 - Point-to-Point ..... Auto Detect
4 - Edge Port .......... Yes

S - Save Configuration Changes
R - Return to Previous Menu

Enter your selection?