HP Dc5700 Network & Internet Communications Guide - Page 10
Interpreting the Network Status Lights, Disabling 802.3u/802.3ab Auto-Negotiation Capabilities - drivers xp
UPC - 882780819535
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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. Disabling 802.3u/802.3ab 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. NOTE The link partner port settings must match the NIC settings. If the NIC is set to autonegotiate, the link partner must also be set to auto-negotiate. If the NIC is forced to a specific speed/duplex, the switch port must be forced to the same speed/duplex. 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. 4 Chapter 1 Network Communications ENWW