Input/Output Interfaces

5.9Network Interface Controller

These systems provide 10/100/1000 Mbps network support through an Intel 82567V network interface controller (NIC), a PHY component, and a RJ-45 jack with integral status LEDs (Figure 5-11). The support firmware is contained in the system (BIOS) ROM. The NIC can operate in half- or full-duplex modes, and provides auto-negotiation of both mode and speed. Half-duplex operation features an Intel-proprietary collision reduction mechanism while full-duplex operation follows the IEEE 802.3x flow control specification.

Green LED

RJ-45

 

Connector

Intel

82567V NIC

Tx/Rx Data

LAN I/F

Tx/Rx Data

 

Yellow LED

LED

Function

Green

Activity/Link. Indicates network activity and link pulse reception.

Yellow

Speed: Off = 10 Mb/s, yellow = 100Mb/s, green = 1 Gb/s.

Figure 5-11. Network Interface Controller Block Diagram

The Network Interface Controller includes the following features:

VLAN tagging with Windows XP and Linux

Multiple VLAN support with Windows XP

Power management support for ACPI 1.1, PXE 2.0, WOL, ASF 1.0, and IPMI

Cisco Etherchannel support

Link and Activity LED indicator drivers

The controller features high and low priority queues and provides priority-packet processing for networks that can support that feature. The controller's micro-machine processes transmit and receive frames independently and concurrently. Receive runt (under-sized) frames are not passed on as faulty data but discarded by the controller, which also directly handles such errors as collision detection or data under-run.

The NIC uses 3.3 VDC auxiliary power, which allows the controller to support Wake-On-LAN (WOL) and Alert-On-LAN (AOL) functions while the main system is powered down.

For the features in the following paragraphs to function as described, the system unit must be plugged into a live AC outlet. Controlling unit power through a switchable power strip will, with the strip turned off, disable any wake, alert, or power mangement functionality.

 

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Technical Reference Guide

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HP dc7900 manual Network Interface Controller, Led

dc7900 specifications

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