Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS Functional Architecture
Revision 1.8
Intel order number E39529-013
51
3.12 Network Interface Controller (NIC)
The Intel
®
Server Boards S5520HC, S5500HCV and S5520HCT provide dual onboard LAN
ports with support for 10/100/1000 Mbps operation. The two LAN ports are based on the
onboard Intel
®
82575EB controller, which is a single, compact component with two, fully-
integrated GbE Media Access Control (MAC) and Physical Layer (PHY) ports.
The Intel
®
82575EB controller provides a standard IEEE 802.3 Ethernet interface for
1000BASE-T, 100BASE-TX, and 10BASE-T applications (802.3, 802.3u, and 802.3ab) and is
capable of transmitting and receiving data at rates of 1000 Mbps, 100 Mbps, or 10 Mbps.
Each network interface controller (NIC) port provides two LEDs:
Link/activity LED (at the left of the connector): Indicates network connection when on,
and transmit/receive activity when blinking.
The speed LED (at the right of the connector) indicates 1000-Mbps operation when
amber; 100-Mbps operation when green; and 10-Mbps when off. The following table
provides an overview of the LEDs.
Table 15. Onboard NIC Status LED
LED Color
LED State
NIC State
Green (Left)
On Active Connection
Blinking Transmit/Receive activity
Off/Green/Amber (Right)
Off 10 Mbps
Green 100 Mbps
Amber 1000 Mbps
3.12.1 MAC Address Definition
Each Intel
®
Server Board S5520HC or S5500HCV has the following four MAC addresses
assigned to it at the Intel factory.
• NIC 1 MAC address
• NIC 2 MAC address - is assigned the NIC 1 MAC address +1
• BMC LAN Channel MAC address – is assigned the NIC 1 MAC address +2
• Intel
®
Remote Management Module 3 (Intel
®
RMM3) MAC address – is assigned the
NIC 1 MAC address +3
During the manufacturing process, each server board has a white MAC address sticker placed
on the top of the NIC 1 port. The sticker displays the NIC 1 MAC address and Intel
®
RMM3 MAC
in both bar code and alphanumeric formats.
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