Dell 5324 Spanning-tree mst cost, Spanning-tree mst configuration, Interface Long Short, 271

spanning-tree mst cost

The spanning-tree mst cost Interface Configuration mode command configures the path cost for multiple spanning tree (MST) calculations. If a loop occurs, the spanning tree considers path cost when selecting an interface to put in the forwarding state. To return to the default configuration, use the no form of this command.

Syntax

spanning-tree mst instance-id cost cost

no spanning-tree mst instance-id cost

•instance-ID — ID of the spanning -tree instance (Range: 1-15).

•cost — The port path cost. (Range: 1 - 200,000,000)

Default Setting

Default path cost is determined by port speed and path cost method (long or short) as shown below:

Interface	Long	Short
Port-channel	20,000	4
Gigabit Ethernet (1000 Mbps)	20,000	4
Fast Ethernet (100 Mbps)	200,000	19
Ethernet (10 Mbps)	2,000,000	100

Command Modes

Interface Configuration (Ethernet, port-channel) mode

Default Configuration

There is no default configuration for this command.

Example

The following example configures the MSTP instance 1 path cost for Ethernet port e9 to 4.

Console(config) # interface ethernet 1/e9

Console(config-if) # spanning-tree mst 1 cost 4

spanning-tree mst configuration

The spanning-tree mst configuration Global Configuration mode command enables configuring an MST region by entering the Multiple Spanning Tree (MST) mode.

Spanning-Tree Commands

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