4 Command Line Interface

Command Usage

This command defines the priority for the use of a port in the Spanning Tree Algorithm. If the path cost for all ports on a switch are the same, the port with the highest priority (that is, lowest value) will be configured as an active link in the spanning tree.

Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled.

Example

Console(config)#interface ethernet 1/5

Console(config-if)#spanning-tree port-priority 0

Related Commands

spanning-tree cost (4-170)

spanning-tree edge-port

This command specifies an interface as an edge port. Use the no form to restore the default.

Syntax

[no] spanning-tree edge-port

Default Setting

Disabled

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

You can enable this option if an interface is attached to a LAN segment that is at the end of a bridged LAN or to an end node. Since end nodes cannot cause forwarding loops, they can pass directly through to the spanning tree forwarding state. Specifying Edge Ports provides quicker convergence for devices such as workstations or servers, retains the current forwarding database to reduce the amount of frame flooding required to rebuild address tables during reconfiguration events, does not cause the spanning tree to initiate reconfiguration when the interface changes state, and also overcomes other STA-related timeout problems. However, remember that Edge Port should only be enabled for ports connected to an end-node device.

This command has the same effect as the spanning-tree portfast.

Example

Console(config)#interface ethernet ethernet 1/5

Console(config-if)#spanning-tree edge-port

Console(config-if)#

Related Commands

spanning-tree portfast (4-173)

4-172

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Accton Technology ES3526XA, ES3552XA manual Spanning-tree edge-port, Syntax No spanning-tree edge-port Default Setting