Cisco Systems IC-23 manual Controlling the Sending of Commands to the LAN Extender, IC-54

Configuring LAN Interfaces

Configuring a LAN Extender Interface

To control priority queueing on a LAN Extender interface, perform the following tasks:

•Set the priority by protocol type.

•Assign a priority group to an interface.

To establish queueing priorities based on the protocol type, use one of the following commands in global configuration mode:

Command	Purpose
priority-list list protocol protocol	Establishes queueing priorities based on the protocol type.
{high medium normal low}
or
priority-list list protocol bridge {high
medium normal low} list list-number

You then assign a priority list to an interface. You can assign only one list per interface. To assign a priority list to a LAN Extender interface, use the following command in interface configuration mode:

Command	Purpose
lex priority-group group	Assigns a priority list to a LAN Extender interface, which activates priority
	output queueing on the LAN Extender.

Controlling the Sending of Commands to the LAN Extender

Each time the core router sends a command to the LAN Extender, the LAN Extender responds with an acknowledgment. The core router waits for the acknowledgment for a predetermined amount of time. If it does not receive an acknowledgment in this time period, the core router sends the command again.

By default, the core router waits 2 seconds for an acknowledgment from the LAN Extender. You might want to change this interval if your connection to the LAN Extender requires a different amount time. To determine whether commands to the LAN Extender are timing out, use the debug lex rcmd privileged EXEC command. To change this interval, use the following command in interface configuration mode:

Command	Purpose
lex timeout milliseconds	Sets the amount of time that the core router waits to receive an acknowledgment
	from the LAN Extender.

By default, the core router sends each command ten times before giving up. The core router displays an error message when it gives up sending commands to the LAN Extender. To change this default, use the following command in interface configuration mode:

Command	Purpose
lex retry-count number	Sets the number of times the core router sends a command to the LAN Extender
	before giving up.

Cisco IOS Interface Configuration Guide

IC-54