USB3G2BP Ethernet Bypass

USB 3.0 to Dual Gigabit Ethernet Bypass Adapter

Silicom’s USB to dual port Ethernet bypass adapter is targeted to maintain network connectivity when system fails. Silicom’s USB to dual port Ethernet bypass adapter supports Normal and Bypass modes. In Normal mode, the ports are independent interfaces.

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. Silicom’s USB to dual port Ethernet bypass adapter can Bypass its Ethernet ports on a host system failure, power off, or upon software request.

Silicom’s USB to dual port Ethernet bypass adapter includes an on board Silicom Bypass Controller with WDT (Watch Dog Timer). The adapter’s software drivers or software application can write commands to the on board Silicom Bypass controller.

The adapter’s software drivers, Silicom Bypass controller and the Bypass circuitry provide an interface that control and manage the mode of the adapter.

USB3G2BP Ethernet Bypass

USB 3.0 to Dual Gigabit Ethernet Bypass Adapter

Performance Features:

Supports all USB 3.0 power saving modes (U0, U1, U2, and U3)
Supports USB Super/High/Full Speed modes with Bus-power or Self-power device
auto-detect capability
High performance packet transfer rate over USB bus using proprietary burst transfer mechanism
Priority queuing – 802.1p layer 2 priority encoding
Virtual LANs –802.1q VLAN tagging
Supports IPv4/IPv6 packet Checksum Offload Engine (COE) to reduce CPU loading, including IPv4 IP/TCP/UDP/ICMP/IGMP & IPv6 TCP/UDP/ICMPv6 checksum check & generation
Jumbo Frame (4KB)
802.x flow control

Bypass:

Bypass / Disconnect Ethernet ports on Power Fail, System Hangs or Software Application Hangs
Software programmable Bypass, Disconnect or Normal Mode
On Board Watch Dog Timer (WDT) Controller
Software programmable time out interval
Software Programmable WDT Enable / Disable counter
Software programmable Bypass Capability Enable / Disable
Software Programmable Disconnect Capability Enable / Disable
Software Programmable mode (Bypass, Normal or Disconnect mode) at Power up
Software Programmable mode (Bypass, Normal mode) at Power off

Copper Gigabit Ethernet 1000Base-T :

Independently copper Gigabit Ethernet channels support Dual Gigabit Ethernet (1000Base-T), Fast Ethernet (100Base-Tx) and Ethernet (10Base-T)
Triple speed 1000Mbps (1000Base-T), 100 Mbps (100Base-Tx) and 10 Mbps (100Base-T) operation
Nway auto negotiation automatic sensing and switching between 1Gbps full duplex and 100 / 10 Mbps operations Simplex or Full Duplex
RJ-45 female connectors

USB3G2BP Ethernet Bypass

USB 3.0 to Dual Gigabit Ethernet Bypass Adapter

Bypass Specifications
Silicom WDT Interval (Software Programmable):	3,276,800 mSec (3,276.8 Sec): Maximum 100 mSec ( 0.1 Sec) : Minimum WDT Interval = (2^wdt_interval_parameter)*(0.1) sec. wdt_interval_parameter: { Valid Range: 0-15}
Copper Gigabit Ethernet Technical Specifications - (1000Base-T) Adapters:
IEEE Standard / Network topology:	IEEE802.3i, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3az Gigabit Ethernet, 1000Base-T Fast Ethernet, 100Base-TX Ethernet, 10Base-T
Full duplex / Simplex:	Support both Simplex & Full duplex operation in all operating speeds
Auto negotiation:	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:	Linux kernel 2.6.14 ~ 3.5.0
General Technical Specifications
Interface Standard:	USB 3.0
Board Size:	100mmx100mm (3.94"x3.94") (LxW)
Box Dimensions:	120mmx120mmx20mm (4.72"x4.72"x0.79") (LxWxH)
USB Voltage:	Adapter Powered by USB +5V
WDT:	Silicom Bypass Controller
I/O:	Dual RJ45 located on edge of the box
Maximum Data Transfer Rate:	USB 3.0: 5 Gbps LAN: 2 Gbps (per port; Full-Duplex)
Operating Humidity:	0%–90%, non-condensing
Operating Temperature:	0°C to 50°C (32°F to 122°F)
Storage Temperature:	-20°C to 60°C (-4°F to 140°F)
EMC Certifications:	FCC Part 15, Subpart B Class A Conducted Emissions Radiated Emissions CE EN 55022: 1998 Clas Amendments A1: 2000; A2: 2003 Conducted Emissions Radiated Emissions CE EN 55024: 1998 Amendments A1: 2000; A2: 2003 Immunity for ITE Amendment A1: 2001 CE EN 61000-3-2 2000, Class A Harmonic Current Emissions CE EN 61000 3-3 1995, Amendment A1: 2001 Voltage Fluctuations and Flicker CE IEC 6100-4-2: 1995 ESD Air Discharge 8kV. Contact Discharge 4kV. CE IEC 6100-4-3:1995 Radiated Immunity (80-1000Mhz), 3V/m 80% A.M. by 1kHz CE IEC 6100-4-4:1995 EFT/B: Immunity to electrical fast transients 1kV Power Leads, 0.5Kv Signals Leads CE IEC 6100-4-5:1995 Immunity to conductive surges COM Mode; 2kV, Dif. Mode 1kV CE IEC 6100-4-6:1996 Conducted immunity (0.15-80 MHz) 3VRMS 80% A.M. By 1kHz CE IEC 6100-4-11:1994 Voltage Dips and Short Interruptions V reduc >95%, 30% >95% Duration 0.5per, 25per, 250per
LEDs
LEDs:	(2) Bi-Color LEDs , two per port. Left LED: Gigabit Link/Activity (Amber) Right LED: 10/100 Link/Activity (Green) (1) Tri-color LED on PCB Alarm (Red) Bypass (Green) Disconnect (Yellow)
LEDs location:	Bi-Color LEDs integrated on RJ45 Tri-Color LED located on the PCB, visible via holes in Front panel
Connectors:	Dual Shielded RJ-45 Female

Functional Description

Silicom’s Dual Port Bypass adapter supports Normal, Bypass.

In Normal mode, the ports are independent interfaces (see Figure 1: Normal mode).

Figure 1 Normal Mode Functional Block Diagram

usb1

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: Bypass mode)

Figure 2: Bypass Mode Functional Block Diagram

usb2