Cisco Systems IC-23 Specifying Full-Duplex Operation, Specifying the Media and Connector Type

Configuring LAN Interfaces

Configuring an Ethernet or Fast Ethernet Interface

Specifying Full-Duplex Operation

The default is half-duplex mode on the FEIP2-DSW-2FX. To enable full-duplex mode on the FEIP2-DSW-2FX (for a maximum aggregate bandwidth of 200 Mbps), use either of the following commands in interface configuration mode:

Command

full-duplex

or

Purpose

Enables full-duplex on the Fast Ethernet interface of the FEIP2-DSW-2FX.

no half-duplex

For an example to enable full-duplex mode on Fast Ethernet, see the “Full Duplex Enablement Operation Example” section.

Caution To prevent system problems, do not configure both FEIP2-DSW-2FX interfaces for full-duplex operation at the same time.

Note The FEIP2-DSW-2TX supports half-duplex only and should not be configured for full-duplex.

Specifying the Media and Connector Type

You can specify that the Ethernet network interface module (NIM) on the Cisco 4000 series routers use either the default of an AUI and a 15-pin connector, or 10BASE-T and an RJ-45 connector. To do so, use one of the following commands in interface configuration mode:

Command	Purpose
media-type aui	Selects a 15-pin Ethernet connector.
media-type 10baset	Selects an RJ-45 Ethernet connector.

The default media connector type is an RJ-45 or SC (fiber-optic) connector. You can specify that the interface uses either an MII connector, or an RJ-45 or SC (fiber-optic) connector (this is the default). To do so, use one of the following commands in interface configuration mode:

Command	Purpose
media-type mii	Selects an MII Ethernet connector.
media-type 100basex	Selects an RJ-45 Ethernet connector for the FEIP2-DSW-2TX or an SC
	connector for the FEIP2-DSW-2FX.

Note When using the I/O controller that is equipped with an MII receptacle and an RJ-45 receptacle, only one receptacle can be configured for use at a time.

Cisco IOS Interface Configuration Guide

IC-26