Copyright: Copyright © 2002 Broadcom Corporation.


Link Selection Overview
Speed & Duplex Selection Overview

The 440x Ethernet Driver provides connection to a network at several different speeds.  The user can select the desired line speed and duplex mode from the pull-down menu.   The recommended selection is Auto, which allows the adapter to negotiate the optimal connection to the network.  The other selections in the pull-down menu may require the user to configure the network to the matching line speed and duplex mode.

The pull-down menu consists of the following selections.

Auto

10 Mb Half

10 Mb Full

100 Mb Half

100 Mb Full


Auto

This is the recommended selection.  This selection allows the adapter to dynamically detect the line speed and duplex mode of the network.  Whenever the network capability changes, the adapter will automatically detect and adjust to the new line speed and duplex mode.


UTP 10 Mbps Half Duplex
10 Mb Half Duplex

This selection forces the adapter to connect to the network at 10 Mbps line speed in half duplex mode.  The adapter may not function if the network is not configured to operate at the same speed and duplex.


UTP 10 Mbps Full Duplex
10 Mb Full Duplex

This selection forces the adapter to connect to the network at 10 Mbps line speed in full duplex mode.  The adapter may not function if the network is not configured to operate at the same speed and duplex.


UTP 100 Mbps Half Duplex
100 Mb Half Duplex

This selection forces the adapter to connect to the network at 100 Mbps line speed in half duplex mode.  The adapter may not function if the network is not configured to operate at the same speed and duplex.


UTP 100 Mbps Full Duplex
100 Mb Full Duplex

This selection forces the adapter to connect to the network at 100 Mbps line speed in full duplex mode.  The adapter may not function if the network is not configured to operate at the same speed and duplex.


Duplex Mode
Duplex mode determines if the adapter can send and receive information simultaneously.  When the hardware is operating in a half duplex mode, it can either send or receive information at any one time.  In a full duplex mode, it can send and receive information at the same time.


Line Speed
Line speed refers to how fast the adapter sends and receives information.  It is measured in Mbps, one million bits per second.


General Overview
Overview

The 440x Ethernet Driver allows a user to configure the following parameters.

Speed & Duplex Selection

Flow Control

Click on the hyperlink to view the detailed description of each item.


Flow Control Overview

The 440x Ethernet Driver can be configured to transmit and receive PAUSE frames.  The PAUSE frames enable the adapter and the switch to control the transmit rate.  The side that is receiving the PAUSE frame will momentarily stop transmitting.

The recommended selection is Disable, which will configure the adapter to ignore PAUSE frames.


Disable

This is the recommended selection.  This selection will not perform flow control to the network on both inbound and outbound traffic.


Enable

This selection will configure the adapter to negotiate flow control capability with the switch.