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Spanning-tree mst cost, Spanning-tree mst configuration – Allied Telesis AT-S94 CLI (AT-8000S Series) User Manual

Page 274

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Page 273

Allied Telesis
AT-8000S-S94-3.0 Command Line Interface User’s Guide

Example

The following example configures the port priority of port e1 to 142.

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. Use the no form of this command to return to the default configuration.

Syntax

spanning-tree mst instance-id cost cost

no spanning-tree mst instance-id cost

Parameters

instance-ID—ID of the spanning -tree instance (Range: 1- 7).

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

Default Configuration

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

Command Modes

Interface Configuration (Ethernet, port-channel) mode

User Guidelines

There are no user guidelines for this command.

Example

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

console(config)# interface ethernet e1

console(config-if)# spanning-tree mst 1 port-priority 142

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

console(config) # interface ethernet 1/e9

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