Dell System 310 Specifications Page 49

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Dell
Dell PowerEdge R310 Technical Guide 48
11 Embedded NICs/LAN on Motherboard (LOM)
11.1 Overview
Broadcom
®
5716C LOMs are the layer 2 networking LOM option on the PowerEdge R310. Dual port 5716C
controller-based LOMs on the R310 support multiple functions over a unified fabric to help manage Ethernet,
iSCSI and remote management traffic on each port simultaneously.
The BCM5716 LOM provides dual 10/100/1000BASE-T Gigabit Ethernet functions, an IEEE802.3-compliant
media access controller (MAC), and a UTP copper physical layer transceiver solution for high-performance
network applications.
11.2 Multiple Speed Support
The BCM5716C LOM includes dual 10/100/1000-Mbps Ethernet MACs with both half-duplex and full-duplex
capability and a dual 10/100/1000 copper PHY. Both Ethernet ports are fully compatible with the IEEE 802.3
standard for auto-negotiation of speeds. It supports VLAN tagging, layer 2 priority encoding, link
aggregation, and full-duplex flow control 802.3 functions in the MAC.
11.3 PCI Express Compliance
BCM5716C LOM supports a x4 PCI Express
®
v2.0- and v1.1-compliant bus interface. The device provides large
on-chip buffer memory to compensate for rate differences between the host and the wire. Additionally,
several plug-and-play enhancements have been added to make the device even more user-friendly.
11.4 Diagnostics
A link quality indicator can be combined with the link speed LED to give installers an instant visual
indication if there are any issues with the wiring plant supporting operation at the desired speed. This
includes physical wiring of defects or channel conditions.
The Broadcom remote cable management and diagnostics software (Broadcom Advanced Control Suite
[BACS]) can be used with the device to provide remote management of the cable and a first level of
diagnostics and fault isolation.
BCM5716C LOM continually monitors various channel conditions. The wirespeed capability allows the LOM to
force auto-negotiation to be automatically limited by the speed that the channel can reliably support rather
than the performance of the end equipment.
11.5 Power Management
Adapter speed connection when the system is in D0 uninitialized or D3 Cold state for a wake-up signal may
be at 100 Mbps, but can return to 1000 Mbit/s when the system is up and running if connected to a 1000
Mbps capable switch.
Dell supports Wake on LAN (WOL) on only one LOM port in the system at a time.
See Using the System Setup Program and UEFI Boot Manager
section of the Hardware Owner’s Manual for
more information.
11.6 Setting Power Management Options
You can set power management options to allow the operating system to turn off the controller to save
power or to allow the controller to wake up the computer. However, if the device is busy (servicing a call,
for example), the operating system will not shut down the device. The operating system attempts to shut
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