SMC Networks TigerSwitch 100 manual Spanning-tree cost

SPANNING TREE COMMANDS

spanning-tree cost

Use this command to configure the Spanning Tree path cost for the specified interface. Use the no form to restore the default.

Syntax

spanning-tree cost cost no spanning-tree cost

cost - The path cost for the interface. (Range – 1-200,000,000)

The recommended range is -

-Ethernet: 200,000-20,000,000

-Fast Ethernet: 20,000-2,000,000

-Gigabit Ethernet: 2,000-200,000

Default Setting

•Ethernet – half duplex: 2,000,000; full duplex: 1,000,000; trunk: 500,000

•Fast Ethernet – half duplex: 200,000; full duplex: 100,000; trunk: 50,000

•Gigabit Ethernet – full duplex: 10,000; trunk: 5,000

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

•This command is used by the Spanning-Tree Protocol to determine the best path between devices. Therefore, lower values should be assigned to interfaces attached to faster media, and higher values assigned to interfaces with slower media.

•Path cost takes precedence over interface priority.

•When the Spanning-Tree pathcost method is set to short, the maximum value for path cost is 65,535.

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