Datasheet

Functional Architecture Intel® Server System SR1640TH TPS
Revision 1.0
Intel order number: E94847-001
20
2.4.8 Network Interface Controller (NIC)
The server boards S3420TH in Intel
®
Server System SR1640TH support three network
interfaces, two is provided from the onboard Intel
®
82574L GbE PCI Express* network
controllers; the third one is the onboard 10/100Mbps KSZ8041NL Network controller, only
enabled by RMM3 Lite-V module for management.
2.4.8.1 GigE Controller 82574L
The 82574 f
amily (82574L and 82574IT) are single, compact, low-power components that
offer a fully-integrated Gigabit Ethernet Media Access Control (MAC) and Physical Layer
(PHY) port. The 82574 uses the PCI Express* architecture and provides a single-port
implementation in a relatively small area so it can be used for server and client
configurations as a LAN on Motherboard (LOM) design.
External interfaces provided on the 82574:
PCIe Rev. 2.0 (2.5 GHz) x1
MDI (Copper) standard IEEE 802.3 Ethernet interface for 1000BASE-T,
100BASETX, and 10BASE-T applications (802.3, 802.3u, and 802.3ab)
NC-SI or SMBus connection to a Manageability Controller (MC)
EEE 1149.1 JTAG (note that BSDL testing is NOT supported)
2.4.8.2 Dedicated 10/100Mbps management port
The KSZ8041NL network PHY is co
nnected to iBMC through RMMII interface as dedicated
management port. This port can only work with Intel
®
RMM3 Lite-V module installed.
2.4.8.3 MAC Address Definition
Each computing node in
Intel
®
Server System SR1640HT has the following four MAC
addresses assigned to it at the Intel factory:
 NIC 1 MAC address
 NIC 2 MAC address – Assigned the NIC 1 MAC address +1
 Integrated BMC LAN Channel MAC address – Assigned the NIC 1 MAC address +2
 Intel
®
Remote Management Module 3 (Intel
®
RMM3 Lite-V) MAC address – Assigned
the NIC 1 MAC address +3
2.4.9 Intel
®
Virtualization Technology for Directed I/O (Intel
®
VT-d)
The Intel
®
3420 PCH provides hardware support for implementation of Intel
®
Virtualization
Technology with Directed I/O (Intel
®
VT-d). Intel VT-d Technology consists of technology
components that support the virtualization of platforms based on Intel
®
Architecture
Processor. Intel VT-d Technology enables multiple operating systems and applications to
run in dependent partitions. A partition behaves like a virtual machine (VM) and provides
isolation and protection across partitions. Each partition is allocated its own subset of host
physical memory.
The Intel
®
Virtualization Technology is designed to support multiple software environments
sharing the same hardware resources. The Intel
®
Virtualization Technology can be enabled
or disabled in the BIOS setup. The default behavior is disabled.
Note: If the setup options are changed to enable or disable the Virtualization Technology
setting in the processor, the user must perform an AC power cycle for the changes
to take effect.