LR-LINK Dual Port Copper Gigabit Ethernet PCI Express Bypass Server adapter is PCI-Express X4 Copper Gigabit Ethernet network interface card that is based on a single chip, non-Bridged Dual port GBE controller. LR-LINK Dual Port Gigabit Ethernet Bypass server adapter supports Normal, Disconnect and Bypass modes.
In Normal mode, the ports are independent interfaces. In Bypass mode, all packets received from one port are transmitted to adjacent port. In Disconnect mode, the adapter simulates switch / rout cable disconnection.
In Bypass mode, the connections of the Ethernet ports are disconnected from the system and switched over to the other port to create a crossed connection loop-back between the Ethernet ports. Hence, in bypass mode all packets received from one port are transmitted to the adjacent port and vice versa. This feature enables to bypass a failed system and provides maximum up time for the network.
In Disconnect mode, the adapter simulates switch / router cable disconnection. In Disconnect mode, the switch / router does not detect link partner of the adapter.
LR-LINK Dual Port Copper Gigabit Ethernet PCI Express Bypass server adapters include an on board WDT (Watch Dog Timer) controller. The adapter’s software drivers or software application can write commands to the on board WDT controller. The adapter’s software drivers, WDT controller and the Bypass circuitry provide an interface that control and manage the mode of the adapter.
LR-LINK Dual Port Copper Gigabit Ethernet PCI Express Bypass Server adapter is the ideal solution for implementing multiple network segments, mission-critical high-powered networking applications and environments within high performance servers.
LR-LINK Dual Port Copper Gigabit Ethernet Bypass Server adapter is based on Intel i350 Dual port Gigabit Ethernet MAC+PHY of Intel Controller. The Intel I350 support PCI-SIG Single-Root I/O virtualization and sharing specification (SR-IOV)
8 Transmit and 8 Receive queues per port
Up to 8 queues of Receive Side Scaling (RSS) minimize CPU utilization across multiple processor systems
Support PCI-SIG Single-Root I/O virtualization Rev 1.1
Support for up to 8 virtual function ( VFs)
Partial replication of PCI Configuration space
Support for 8 pools (single queue) of virtual machine Device Queues (VMDq) per port
Support Direct Cache Access (DCA)
Support Intel I/O Acceleration Technology v3.0
TSO interleaving for reduced latency
Minimized device I/O interrupts using MSI and MSI-X
UDP, TCP and IP checksum offload
UDP and TCP transmit segmentation offload (TSO). machine
SCTP receive and transmit checksum offload
Packet interrupt coalescing timers (packet timers) and absolute-delay interrupt timers for both transmit and receive operation
EEE (IEEE 802.3az) for reduced power consumption during low link utilization periods
Bypass / Disconnect Ethernet ports on Power Fail, System Hangs or Software Application Hangs
Software programmable Bypass, Disconnect or Normal Mode
Support both Simplex & Full duplex operation in all operating speeds
Auto-negotiation between Full duplex and simplex operations and between 10Mb/s 100Mb/s speeds and duplex 1000Mb/s
Data Transfer Rate:
1000 Mb/s, 100 Mb/s and 10 Mb/sec in simplex mode per port.
2000Mb/s 200 and 20 Mb/s in full duplex mode per port
Cables and Operating distance:
10Base-T Category 3, 4, or 5 maximum 50m *
100Base-Tx Category 5 maximum 50m *
1000Base-T Category 5E maximum 50m *
*Theoretical Distance – Defined as half a distance as stated by the IEEE 802.3 standard
Operating Systems Support
Operating system support:
General Technical Specifications
PCI-Express Base Specification Revision 2.1 ( 5 GTs)
Low profile short add-in card: 167.64mm X 68.91mm (6.60”X 2.713”)
PCI Express Card Type:
PCI Express Voltage:
+12V +- 8%
Gold Finger: X4
Dual RJ45 located on edge of the board
130gr (4.586 oz )
4.56W, 0.38A at 12V: Typical all ports operate at 1000Mb/s.
3W, 0.25A at 12V: Typical all ports operate at 100Mb/s.
2.64W, 0.22A at 12V: Typical all ports operate at 10Mb/s.
2.16W, 0.18A at 12V: Typical No link at all ports.
2.28W, 0.19A at 12V: Typical Bypass Mode
2.64W, 0.22A at 12V: Typical Bypass Mode
Metal Bracket: Full Height / Low profile Height
0°C – 45°C (32°F - 113°F)
FCC CE ROHS
159 *According to Telcordia SR-332 Issue 2. Environmental condition – GB (Ground, Fixed, and Controlled). Ambient temperature 40°C
(2) LEDs per port
Blinks on activity : (Green)
Link 100/1000 : (Green)/ (Orange)
Bypass LED: Turns on bypass (Green),
Disconnect LED: Turns on disconnect (Orange)
LEDs are located right to RJ-45 connector
Dual Shielded RJ-45
LR-LINK Dual Port Bypass adapter supports Normal, Bypass and Disconnect modes. In Normal mode, the ports are independent interfaces (see Figure 1: Normal mode, one Bypass pair is illustrated).
Figure 1: Normal Mode Functional Block Diagram
In Bypass mode, the connections of the Ethernet network ports are disconnected from the interfaces and switched over to the other port to create a crossed connection loop-back between the Ethernet ports. The connections of the interfaces are left unconnected. (See Figure 2: one Bypass pair illustrated)
Figure 2: Bypass Mode Functional Block Diagram
In Disconnect mode, the connections of the Ethernet network ports are disconnected from the interfaces. (See Figure 3: one Bypass pair illustrated
LR-LINK Dual Port Bypass adapter supports software programmable to select Normal, Bypass or Disconnect modes.
LR-LINK Dual Port Bypass adapter supports Disable Bypass, Disable Disconnected capabilities; hence, if those adapters receive Disable Bypass capability / Disable Disconnect commands, the adapter does not Bypass / does not Disconnect its Ethernet ports, The Disable Bypass Capabilities are reserved also after power off. This feature enables to emulate a standard NIC.
LR-LINK Dual Port Bypass adapter supports Disable supports setting the default mode at power up and power off. Those setting are reserved also after power off.