intelE1G42EF双口光纤网卡

Intel®Gigabit ET, ET2, and EF
Multi-Port Server Adapters
Dual- and quad-port Gigabit Ethernet server adapters designed
for multi-core processors and optimized for virtualization
• High-performing,  10/100/1000
Ethernet connection
• Reliable and proven Gigabit Ethernet
technology from Intel Corporation
• Scalable PCI Express* interface  provides
dedicated I/O bandwidth  for I/O-intensive
networking applications
• Optimized for virtualized  environments
• Flexibility with iSCSI  Boot and choice of dual-
and quad-port  adapters in both fiber and copper
The Intel® Gigabit ET, ET2, and  EF Multi-Port Server Adapters  are
Intel’s third generation of PCIe  GbE network adapters. Built with
the Intel® 82576 Gigabit Ethernet Controller, these  new adapt-
ers showcase the next  evolution in GbE networking features  for
The I/O technologies  on a multi-core platform make use of the
the enterprise network  and data center. These features include
multiple queues and  multiple interrupt vectors available  on the
support for multi-core  processors and optimization  for server
network controller. These queues  and interrupt vectors help in
virtualization.
load balancing the  data and interrupts amongst themselves  in
order to lower the load on the  processors and improve overall
Designed for Multi-Core Processors
system performance.  For example, depending  upon the latency
These  dual- and  quad-port  adapters  provide  high-performing,
sensitivity of the data,  the low level latency interrupts feature
multi-port  Gigabit  connectivity   in  a multi-core  platform  as  well
can bypass the time  interval for specific TCP ports or  for flagged
as in  a virtualized  environment.   In a multi-core   platform,  the
packets to give certain types  of data streams the least amount
adapters  support  different  technologies   such
of latency to the application.
as multiple  queues,  receive-side   scaling,  MSI-X,  and Low
Latency  Interrupts,  that  help  in accelerating  the  data across
the platform,   thereby  improving  application  response  times.
ptimized for Virtualization
This generation of PCIe  Intel® Gigabit adapters provides improved
performance with  the next-generation VMDq technology, which
includes features such as  loop back functionality  for inter-VM
communication, priority-weighted  bandwidth management,  and
doubling the number  of data queues per port from four  to eight.
It now also supports  multicast and broadcast  data on a virtual-
ized server.
The Intel® Gigabit ET, ET2, and  EF Multi-Port Server Adapters
showcase the latest virtualization  technology called  Intel®
Virtualization  Technology for Connectivity (Intel® VT for
Connectivity).  Intel VT for Connectivity is a suite  of hardware
assists that improve overall  system performance by lowering
the I/O overhead in a virtualized  environment. This optimizes
CPU usage, reduces system  latency, and improves I/O through-
put. Intel VT for Connectivity  includes:
Intel® I/O Acceleration Technology
Intel I/O Acceleration Technology (Intel I/OAT) is a suite of fea-
tures that improves data acceleration  across the platform, from
networking devices  to the chipset and processors, which  help
to improve system performance  and application response  times.
The different features include  multiple queues and receive-side
scaling, Direct Cache  Access (DCA), MSI-X, Low-Latency  Inter-
rupts, Receive Side Scaling  (RSS), and others.  Using multiple
queues and receive-side  scaling, a DMA engine moves data using
the chipset instead of the  CPU. DCA enables the adapter to
pre-fetch data from the memory  cache, thereby avoiding cache
misses and improving  application response times.  MSI-X helps
in load-balancing  I/O interrupts across multiple  processor cores,
and Low Latency Interrupts  can provide certain data streams a
non-modulated path  directly to the application. RSS  directs the
interrupts to a specific  processor core based on the application’s
address.
• Virtual Machine  Device Queues (VMDq)
• Intel® I/O Acceleration Technology
1
(Intel® I/OAT)
Use of multi-port  adapters in a virtualized environment  is very
important because  of the need to provide redundancy  and
data connectivity  for the applications/workloads  in the virtual
machines. Due to slot  limitations and the need for redundancy
and data connectivity,  it is recommended that a virtualized
physical server needs  at least six GbE ports to satisfy  the
I/O requirement demands.
Virtual Machine Device queues (VMDq)
VMDq reduces I/O overhead  created by the hypervisor in a
virtualized server  by performing data sorting  and coalescing in
the network silicon.   VMDq technology makes use  of multiple
2
queues in the network  controller. As data packets enter the
network adapter, they are sorted,  and packets traveling to the
same destination  (or virtual machine) get grouped together in  a
single queue. The packets  are then sent to the hypervisor, which
directs them to their  respective virtual machines.  Relieving the
hypervisor of packet filtering  and sorting improves overall  CPU
usage and throughput  levels.
Single-Root I/O Virtualization (SR-IOV)
For mission-critical  applications, where dedicated  I/O is required
for maximum network  performance, users can assign  a dedicated
virtual function  port to a VM. The controller  provides direct
VM connectivity  and data protection across VMs using SR-IOV.
SR-IOV technology enables  the data to bypass the software
virtual switch and  provides near-native performance. It assigns
either physical or virtual  I/O ports to individual  VMs directly.
2
network adapter hardware.  These adapters are future-proof and
prepared to provide LinkSec  functionality when  the ecosystem
supports this  new technology.
highest I/O throughput  and lowest-latency performance  such as
database, storage, and  financial applications.
The PCI-SIG SR-IOV capability  is a mechanism for devices to
advertise their  ability to be directly assigned to multiple  virtual
machines. This technology  enables the partitioning  of a PCI func-
tion into many virtual  interfaces for the purpose of sharing  the
resources of a PCI Express* (PCIe)  device in a virtual environment.
These virtual  interfaces are called Virtual Functions.  Each virtual
function can support  a unique and separate  data path for I/O-
related functions within  the PCI Express hierarchy. Use of SR-IOV
with a networking device,  for example, allows the bandwidth
of a single port (function)  to be partitioned into smaller  slices
that may be allocated to specific  VMs, or guests, via a standard
interface.
IPsec provides data protection  between the end-point devices
of a network communication  session. The IPsec offload  feature
is designed to offload  authentication and encryption  of some
types of IPsec traffic  and still delivers near line-rate  throughput
and reduced CPU utilization.
LinkSec is an IEEE industry-standard  feature that provides  data
protection in the network.  The IEEE 802.3ae and IEEE 802.3af
protocols provide hop-to-hop  data protection between two
network devices in the  transaction line between the  host and
destination. The  two network devices must support  the LinkSec
technology. The network  devices could be servers, switches,  and
routers.
End-to-end Wired Security
The Intel® Gigabit ET, ET2, and  EF Multi-Port Server  Adapters are
Intel’s first PCIe adapters  to provide authentication and encryp-
tion for IPsec and LinkSec.  LinkSec is already  designed into the
Features
Benefits
General
Intel® 82576 Gigabit Ethernet  Controller
• Industry-leading,  energy-efficient  design for next-generation  Gigabit performance
and multi-core  processors
Low-profile
• Enables higher  bandwidth and throughput  from standard  and low-profile PCIe slots
and servers
iSCSI remote boot  support
Load balancing  on multiple CPUs
• Provides centralized  storage area network  (SAN) management at  a lower cost than
competing iSCSI  solutions
• Increases performance  on multi-processor  systems by efficiently  balancing  network
loads across CPU  cores when used with Receive-Side  Scaling from Microsoft  or
Scalable I/O  on Linux*
Compatible with  x4, x8, and x16 standard
and low-profile  PCI Express* slots
• Allows each port  to operate without interfering  with the other
Multi-port  design
• Enables dual-  or quad-port operation  in almost any PCI  Express server slot,
except x1 slots
Support for  most network operating  systems (NOS)      • Enables widespread  deployment
RoHS-compliant
3
• Compliant with  the European Union directive  2002/95/EC to reduce  the use
of hazardous materials
Intel® PROSet Utility  for Windows* Device Manager
• Provides point-and-click  management  of individual adapters,  advanced adapter
features, connection  teaming, and virtual  local area network  (VLAN) configuration
3

     


Intel®Gigabit ET, ET2, and EF
Multi-Port Server Adapters
Dual- and quad-port Gigabit Ethernet server adapters designed
for multi-core processors and optimized for virtualization
• High-performing,  10/100/1000
Ethernet connection
• Reliable and proven Gigabit Ethernet
technology from Intel Corporation
• Scalable PCI Express* interface  provides
dedicated I/O bandwidth  for I/O-intensive
networking applications
• Optimized for virtualized  environments
• Flexibility with iSCSI  Boot and choice of dual-
and quad-port  adapters in both fiber and copper
The Intel® Gigabit ET, ET2, and  EF Multi-Port Server Adapters  are
Intel’s third generation of PCIe  GbE network adapters. Built with
the Intel® 82576 Gigabit Ethernet Controller, these  new adapt-
ers showcase the next  evolution in GbE networking features  for
The I/O technologies  on a multi-core platform make use of the
the enterprise network  and data center. These features include
multiple queues and  multiple interrupt vectors available  on the
support for multi-core  processors and optimization  for server
network controller. These queues  and interrupt vectors help in
virtualization.
load balancing the  data and interrupts amongst themselves  in
order to lower the load on the  processors and improve overall
Designed for Multi-Core Processors
system performance.  For example, depending  upon the latency
These  dual- and  quad-port  adapters  provide  high-performing,
sensitivity of the data,  the low level latency interrupts feature
multi-port  Gigabit  connectivity   in  a multi-core  platform  as  well
can bypass the time  interval for specific TCP ports or  for flagged
as in  a virtualized  environment.   In a multi-core   platform,  the
packets to give certain types  of data streams the least amount
adapters  support  different  technologies   such
of latency to the application.
as multiple  queues,  receive-side   scaling,  MSI-X,  and Low
Latency  Interrupts,  that  help  in accelerating  the  data across
the platform,   thereby  improving  application  response  times.
ptimized for Virtualization
This generation of PCIe  Intel® Gigabit adapters provides improved
performance with  the next-generation VMDq technology, which
includes features such as  loop back functionality  for inter-VM
communication, priority-weighted  bandwidth management,  and
doubling the number  of data queues per port from four  to eight.
It now also supports  multicast and broadcast  data on a virtual-
ized server.
The Intel® Gigabit ET, ET2, and  EF Multi-Port Server Adapters
showcase the latest virtualization  technology called  Intel®
Virtualization  Technology for Connectivity (Intel® VT for
Connectivity).  Intel VT for Connectivity is a suite  of hardware
assists that improve overall  system performance by lowering
the I/O overhead in a virtualized  environment. This optimizes
CPU usage, reduces system  latency, and improves I/O through-
put. Intel VT for Connectivity  includes:
Intel® I/O Acceleration Technology
Intel I/O Acceleration Technology (Intel I/OAT) is a suite of fea-
tures that improves data acceleration  across the platform, from
networking devices  to the chipset and processors, which  help
to improve system performance  and application response  times.
The different features include  multiple queues and receive-side
scaling, Direct Cache  Access (DCA), MSI-X, Low-Latency  Inter-
rupts, Receive Side Scaling  (RSS), and others.  Using multiple
queues and receive-side  scaling, a DMA engine moves data using
the chipset instead of the  CPU. DCA enables the adapter to
pre-fetch data from the memory  cache, thereby avoiding cache
misses and improving  application response times.  MSI-X helps
in load-balancing  I/O interrupts across multiple  processor cores,
and Low Latency Interrupts  can provide certain data streams a
non-modulated path  directly to the application. RSS  directs the
interrupts to a specific  processor core based on the application’s
address.
• Virtual Machine  Device Queues (VMDq)
• Intel® I/O Acceleration Technology
1
(Intel® I/OAT)
Use of multi-port  adapters in a virtualized environment  is very
important because  of the need to provide redundancy  and
data connectivity  for the applications/workloads  in the virtual
machines. Due to slot  limitations and the need for redundancy
and data connectivity,  it is recommended that a virtualized
physical server needs  at least six GbE ports to satisfy  the
I/O requirement demands.
Virtual Machine Device queues (VMDq)
VMDq reduces I/O overhead  created by the hypervisor in a
virtualized server  by performing data sorting  and coalescing in
the network silicon.   VMDq technology makes use  of multiple
2
queues in the network  controller. As data packets enter the
network adapter, they are sorted,  and packets traveling to the
same destination  (or virtual machine) get grouped together in  a
single queue. The packets  are then sent to the hypervisor, which
directs them to their  respective virtual machines.  Relieving the
hypervisor of packet filtering  and sorting improves overall  CPU
usage and throughput  levels.
Single-Root I/O Virtualization (SR-IOV)
For mission-critical  applications, where dedicated  I/O is required
for maximum network  performance, users can assign  a dedicated
virtual function  port to a VM. The controller  provides direct
VM connectivity  and data protection across VMs using SR-IOV.
SR-IOV technology enables  the data to bypass the software
virtual switch and  provides near-native performance. It assigns
either physical or virtual  I/O ports to individual  VMs directly.
2
network adapter hardware.  These adapters are future-proof and
prepared to provide LinkSec  functionality when  the ecosystem
supports this  new technology.
highest I/O throughput  and lowest-latency performance  such as
database, storage, and  financial applications.
The PCI-SIG SR-IOV capability  is a mechanism for devices to
advertise their  ability to be directly assigned to multiple  virtual
machines. This technology  enables the partitioning  of a PCI func-
tion into many virtual  interfaces for the purpose of sharing  the
resources of a PCI Express* (PCIe)  device in a virtual environment.
These virtual  interfaces are called Virtual Functions.  Each virtual
function can support  a unique and separate  data path for I/O-
related functions within  the PCI Express hierarchy. Use of SR-IOV
with a networking device,  for example, allows the bandwidth
of a single port (function)  to be partitioned into smaller  slices
that may be allocated to specific  VMs, or guests, via a standard
interface.
IPsec provides data protection  between the end-point devices
of a network communication  session. The IPsec offload  feature
is designed to offload  authentication and encryption  of some
types of IPsec traffic  and still delivers near line-rate  throughput
and reduced CPU utilization.
LinkSec is an IEEE industry-standard  feature that provides  data
protection in the network.  The IEEE 802.3ae and IEEE 802.3af
protocols provide hop-to-hop  data protection between two
network devices in the  transaction line between the  host and
destination. The  two network devices must support  the LinkSec
technology. The network  devices could be servers, switches,  and
routers.
End-to-end Wired Security
The Intel® Gigabit ET, ET2, and  EF Multi-Port Server  Adapters are
Intel’s first PCIe adapters  to provide authentication and encryp-
tion for IPsec and LinkSec.  LinkSec is already  designed into the
Features
Benefits
General
Intel® 82576 Gigabit Ethernet  Controller
• Industry-leading,  energy-efficient  design for next-generation  Gigabit performance
and multi-core  processors
Low-profile
• Enables higher  bandwidth and throughput  from standard  and low-profile PCIe slots
and servers
iSCSI remote boot  support
Load balancing  on multiple CPUs
• Provides centralized  storage area network  (SAN) management at  a lower cost than
competing iSCSI  solutions
• Increases performance  on multi-processor  systems by efficiently  balancing  network
loads across CPU  cores when used with Receive-Side  Scaling from Microsoft  or
Scalable I/O  on Linux*
Compatible with  x4, x8, and x16 standard
and low-profile  PCI Express* slots
• Allows each port  to operate without interfering  with the other
Multi-port  design
• Enables dual-  or quad-port operation  in almost any PCI  Express server slot,
except x1 slots
Support for  most network operating  systems (NOS)      • Enables widespread  deployment
RoHS-compliant
3
• Compliant with  the European Union directive  2002/95/EC to reduce  the use
of hazardous materials
Intel® PROSet Utility  for Windows* Device Manager
• Provides point-and-click  management  of individual adapters,  advanced adapter
features, connection  teaming, and virtual  local area network  (VLAN) configuration
3

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