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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
553
Gigabit Ethernet Full Duplex
Trunk
10,000
5,000
Table 5-65 Default STA Path Costs
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
This command is used by the Spanning Tree 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.
Path cost takes precedence over port priority.
When the spanning-tree pathcost method (page 4-206) is set to short, the maximum value for path cost is 65,535.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree cost 50
Console(config-if)#
spanning-tree port-priority
This command configures the priority for the specified interface. Use the no form to restore the default.
Syntax
spanning-tree port-priority priority no spanning-tree port-priority
priority - The priority for a port. (Range: 0-240, in steps of 16)
Default Setting
128
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
This command defines the priority for the use of a port in the Spanning Tree Algorithm. If the path cost for all ports on a
switch are the same, the port with the highest priority (that is, 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.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree port-priority 0