HP Blade Blade Instrucciones de instalación y mantenimiento

Network & Internet

Communications Guide

Business PCs

Document Part Number: 384570-001

May 2005

This guide provides definitions and instructions for using network

interface controller (NIC) features that are preinstalled on some

models. It also provides information about Internet Service Providers

and solving Internet access problems.

The information contained herein is subject to change without notice.

Microsoft and Windows are trademarks of Microsoft Corporation in the U.S.

and other countries.

The only warranties for HP products and services are set forth in the express

warranty statements accompanying such products and services. Nothing herein

should be construed as constituting an additional warranty. HP shall not be liable

for technical or editorial errors or omissions contained herein.

This document contains proprietary information that is protected by copyright.

No part of this document may be photocopied, reproduced, or translated to

another language without the prior written consent of Hewlett-Packard

Company.

ÅWARNING: Text set off in this manner indicates that failure to follow

directions could result in bodily harm or loss of life.

ÄCAUTION: Text set off in this manner indicates that failure to follow

directions could result in damage to equipment or loss of information.

Network & Internet Communications Guide

Business PCs

First Edition (May 2005)

Document Part Number: 384570-001

Network & Internet Communications Guide www.hp.com iii

Contents

1 Network Communications

Ethernet Network Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

NIC-Based Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3

Wake-On-LAN Support (WOL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4

Interpreting the Network Status Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–5

Disabling 802.3u Auto-Negotiation Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–6

Installing Network Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7

Wireless Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8

Ad-hoc Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8

Access Point (Infrastructure) Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8

Advantages of Wireless Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–9

2 Internet Communications

Choosing an Internet Service Provider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1

Content Advisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Restricting Internet Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Solving Internet Access Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4

Network & Internet Communications Guide www.hp.com 1–1

Network Communications

The following items are covered in this section:

■Ethernet Network Structure

■Network Interface Controller (NIC)-Based Alerts

■Wake-On-Lan (WOL) Support

■Interpreting the Network Status Lights

■Disabling the Autosensing Capabilities

■Installing Network Drivers

■Wireless Networks

This section provides information about Ethernet networks and the

hardware connectors and software device drivers that allow you to

access an Ethernet network. Access to a computer network

immediately increases your productivity potential. Once the network

connection is active, you can share resources, such as a printer,

exchange information from computer to computer, and run common

software programs.

The computer comes network-ready, which means that it has an

integrated network controller and network device drivers already

loaded onto the computer hard drive. The computer is ready to make

the network connection.

1–2 www.hp.com Network & Internet Communications Guide

Network Communications

Ethernet Network Structure

All Ethernet networks include some combination of the following

elements:

Ethernet Network Structure

Refer to the Hardware Reference Guide on the Documentation and

Diagnostics CD for network connector identification.

1Ethernet cable 3Drop cables

2Information packets 4Workstations

Network & Internet Communications Guide www.hp.com 1–3

Network Communications

NIC-Based Alerts

Some NICs feature Alerting Capabilities, which allow a system

administrator to monitor the computer over the network remotely. The

computer can send hardware and operating system alerts over the

network before the operating system is loaded, while the operating

system is loaded, while the computer is in low power states, and when

the computer is powered off. Depending on the NIC model, these

alerts can be monitored in the following states:

■System BIOS hang—On action

■Operating system hang—On action

■Processor missing—On power up

■Operating temperature exceeded—On action

■Chassis intrusion—On power up or on action if system is running

■Watchdog—On action (same as Operating system hang)

■Heartbeat monitoring—Always

✎NICs featuring Alerting Capabilities comply with Alert Standard

Format (ASF) specification 2.0 and support Remote Management and

Control Protocol (RMCP) based alerts. ASF 1.0 implementations will

not support RMCP due to lack of security in the ASF 1.0

specification.

NIC-Based Alerts are enabled and configured by installing the ASF

2.0 agents for the NIC you are using. These are available at

www.hp.com. ASF alerts can also be enabled and configured using

the Common Information Model (CIM).

1–4 www.hp.com Network & Internet Communications Guide

Network Communications

Wake-On-LAN Support (WOL)

Wake-On-Lan (WOL) can be enabled and disabled in Windows XP

and Windows 2000.

To enable or disable Wake-On-Lan:

Windows XP

1. Select Start > Control Panel.

2. Double-click Network Connections.

3. Double-click Local Area Connection.

4. Click Properties.

5. Click Configure.

6. Click the Power Management tab, then select or clear the check

box to Allow this device to bring the computer out of standby.

Windows 2000

1. Select Start > Settings > Control Panel.

2. Double-click Network and Dial-up Connections.

3. Right-click Local Area Connection.

4. Click Properties.

5. Click Configure.

6. Click the Power Management tab, then select or clear the check

box to Allow this device to bring the computer out of standby.

✎For more information on Wake-On-LAN, refer to the Remote

Management Administrators Guide. The Remote Management

Administrators Guide is included with the Remote Management

Setup Utilities and is available on the Support Software CD or at

www.hp.com.

Network & Internet Communications Guide www.hp.com 1–5

Network Communications

Interpreting the Network Status Lights

Some Ethernet network interface controllers include network status

lights:

■Link light—illuminates when the system is physically connected

to an active network.

■Activity light—illuminates when the computer detects network

activity. When the system is connected to a highly used

network, the activity light will remain on almost constantly.

■Operating Speed light—illuminates during 1000 Mbps or

100 Mbps operation. The color of the light identifies the

operating speed.

Some NICs include only two network status lights where link

(light on) and activity (light blinking) are indicated by one light and

1000-Mbps or 100-Mbps operation is indicated by the second light.

The integrated NIC has two network status lights on the NIC

connector:

■Link/Activity light—Illuminates green when physically linked to

the network and blinks on and off to indicate network activity.

■Operating Speed light—Illuminates green when operating at

1000 Mbps, yellow when operating at 100 Mbps, and is not

illuminated when operating at 10 Mbps.

1–6 www.hp.com Network & Internet Communications Guide

Network Communications

Disabling 802.3u Auto-Negotiation Capabilities

Auto-Negotiation NICs automatically determine the maximum

network operating speed and duplex capabilities of the attached

network and configure themselves on the highest common

combination. The computer begins Auto-Negotiation whenever it

obtains a valid network link, or when the NIC driver is loaded.

In addition to determining the network operating speed, the computer

determines if full-duplex is supported. Full-duplex systems can

transmit and receive information on the network simultaneously.

Half-duplex systems cannot transmit and receive simultaneously.

If necessary, you can disable the Auto-Negotiation capabilities and

force the system to operate in one mode only.

Windows XP

1. Select Start > Control Panel.

2. Double-click Network Connections.

3. Double-click Local Area Connection.

4. Click Properties.

5. Click Configure.

6. Click the Advanced tab.

7. Select Link Speed & Duplex in the Property list box.

8. Change the speed and duplex values to the appropriate values,

depending on the capabilities of the network.

9. Click OK. You may be prompted to restart the computer for the

changes to take effect.

Windows 2000

1. Select Start > Settings > Control Panel.

2. Double-click Network and Dial-up Connections.

3. Right-click Local Area Connection.

4. Click Properties.

5. Click Configure.

Network & Internet Communications Guide www.hp.com 1–7

Network Communications

6. Click the Advanced tab.

7. Select Link Speed/Duplex Mode in the Property list box.

8. Change the speed and duplex values to the appropriate values,

depending on the capabilities of the network.

9. Click OK. You may be prompted to restart the computer for the

changes to take effect.

Refer to the documentation provided with the network controller for

additional information.

✎100BaseTX and 1000BaseT operation requires the use of CAT5 UTP

cabling or better (CAT5, CAT5a, CAT6).

Installing Network Drivers

The device drivers for the network controller enable the drivers to

load correctly in the operating system used, allowing communication

with the network.

✎Device drivers are supplied for the Windows XP. If you are using

another operating system, device drivers may be installed from media

included with the network operating system or are available from HP.

If it ever becomes necessary to reinstall the operating system, use the

Restore Plus! CD.

Install the correct device drivers according to the operating system

you are using, as listed below.

Windows XP

1. Select Start > Control Panel.

2. Double-click Network Connections.

3. Double-click the New Connection Wizard icon and follow the

instructions on the screen.

Windows 2000

Device drivers are not pre-loaded for Windows 2000. Go to

www.hp.com to download the drivers and installation instructions.

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