Allied Telesis AT-S39 - Manual (Page 89)

AT-S39 User’s Guide
89
2 - 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.
3 - 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.
4 -Port State
The current STP status of the port. The status can be Forwarding,
Listening, Learning, or Blocking. This value cannot be changed.
5 - Root Bridge
The MAC address of the bridge functioning as the root bridge in
the spanning tree domain. This value is for display purposes only
and cannot be changed.