Management Guide
2-19
Configuring STA for Ports

The following figure and table describe STA configuration for ports.

CheetahSwitch Workgroup - 4508
Spanning Tree Port Configuration : Port 1 - 8
Port Type Priority Cost Fast STA Mode
-----------------------------------------------------
1 1000SX 128 4 DISABLED
2 1000SX 128 4 DISABLED
3 1000SX 128 4 DISABLED
4 1000SX 128 4 DISABLED
5 1000SX 128 4 DISABLED
6 1000SX 128 4 DISABLED
7 1000SX 128 4 DISABLED
8 1000SX 128 4 DISABLED
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, other keys to make changes.
Parameter Default Description
Type Shows port type as 1000BASE-SX.
Priority 128 Defines the priority for the use of a port in the STA algorithm. If
the path cost for all ports on a switch are the same, the port with
the highest priority (i.e., lowest value) will be configured as an
active link in the spanning tree. Where more than one port is
assigned the highest priority, the port with lowest numeric
identifier will be enabled.
The range is 0 - 255.
(Path) Cost 100/19/4 This parameter is used by the STA algorithm to determine the
best path between devices. Therefore, lower values should be
assigned to ports attached to faster media, and higher values
assigned to ports with slower media.
The default and recommended range is:
Standard Ethernet: 100 (50~600)
Fast Ethernet: 19 (10~60)
Gigabit Ethernet: 4 (3~10)
The full range is 0 - 65535.
Note: Path cost takes precedence over port priority.
Fast STA Mode DISABLED This parameter is used to enable/disabled the Fast Spanning
Tree mode. In this mode, ports skip the Blocked, Listening and
Learning states and proceed straight to Forwarding.
The Fast STA Mode enables end-node workstations and servers
to overcome time-out problems when the Spanning Tree
Algorithm is implemented in a network. Therefore, the Fast STA
Mode should only be enabled for ports that are connected to an
end-node device.