SMC Networks SMC8150L2 manual Spanning-tree spanning-disabled, Spanning-tree cost

4 Command Line Interface

specify the maximum number of bridges that will propagate a BPDU. Each bridge decrements the hop count by one before passing on the BPDU. When the hop count reaches zero, the message is dropped.

Example

Console(config-mstp)#max-hops 30

Console(config-mstp)#

spanning-tree spanning-disabled

This command disables the spanning tree algorithm for the specified interface. Use the no form to reenable the spanning tree algorithm for the specified interface.

Syntax

[no] spanning-tree spanning-disabled

Default Setting

Enabled

Command Mode

Interface Configuration (Ethernet, Port Channel)

Example

This example disables the spanning tree algorithm for port 5.

Console(config)#interface ethernet 1/5

Console(config-if)#spanning-tree spanning-disabled

Console(config-if)#

spanning-tree cost

This command configures 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 port.

(Range: 0 for auto-configuration, or 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

•10 Gigabit Ethernet: 200-20,000

Default Setting

By default, the system automatically detects the speed and duplex mode used on each port, and configures the path cost according to the values shown below. Path cost “0” is used to indicate auto-configuration mode.

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

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