Allied Telesis AT-S63 - Manual (Page 445)

AT-S63 Management Software Command Line Interface User’s Guide
Section V: Spanning Tree Protocols 445
SET STP PORT
Syntax
set stp port= port [pathcost|portcost=auto| portcost ]
[portpriority= portpriority ]
Parameters
port Specifies the port you want to configure. You can
configure more than one port at a time. You can specify
the ports individually (for example, 5, 7, 22), as a range
(for example, 18-23), or both (for example, 1, 5, 14-22).
pathcost or Specifies the port’s cost. The parameters are
portcost equivalent. The spanning tree algorithm uses the cost
parameter to decide which port provides the lowest cost
to the root bridge for that LAN. This parameter can take
the range of 1 to 65,535, or AUTO. The default setting
is AUTO, for Automatic Update, which automatically
sets port cost according to the speed of the port.
Table 16 lists the STP port costs with Auto-Detect.
Table 17 lists the STP port costs with Auto-Detect when
a port is part of a port trunk.
portpriority Specifies the port’s 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, for a total of 16 increments as
Table 16. STP Auto-Detect Port Costs
Port Speed Port Cost
10 Mbps 100
100 Mbps
10
1000 Mbps 4
Table 17. Auto-Detect Port Trunk Costs
Port Speed Port Cost
10 Mbps 4
100 Mbps 4
1000 Mbps 1