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 algorithm 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.

Example

Console(config)#interface ethernet SNP5

Console(config-if)#spanning-tree cost 50

Console(config-if)#

Chapter 4 Command-Line Reference 4-113

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Sunfire B1600 manual Spanning-tree cost cost No spanning-tree cost