Networking

High speed  development of optical communication requires communication system with lower energy consumption and higher bandwidth. SFP  transceiver  plays an extremely important role in this system. This article focus on SFP transceiver. Figure 1: Examples of SFP transceiver. SFP  Transceiver Introduction SFP  module,  also called as small form-factor pluggable or mini GBIC (gigabit interface converter), is a compact, hot-pluggable optical transceiver module. It’s designed to support Fibre Channel, Gigabit Ethernet  and  other communication standards. SFP modules are used in network switches, routers or network interface cards, supporting different speeds such as 2G, 4G or even more. Types of SFP  Transceiver SFP transceiver module comes in various types on the basis of different classification standards. Basically, SFP transceiver is divided into fiber SFP and  copper SFP  types according to the dif...

Cisco is a worldwide leader in the telecommunication industry whose routers, switches are very welcome among the users. To work well with those Cisco networking applications, Cisco SFP transceivers are the best choice. GLC-SX-MM, GLC-SX-MMD, GLC-SX-MM-RGD  and  SFP-GE-S are different types of Cisco 1000BASE SFP transceiver module. All these transceiver modules comply with IEEE 802.3z 1000BASE standard. And since there are similar specifications for these four transceiver modules, users may be confused when they need to choose one SFP module for their Cisco switches. Here we’ll make a comparison of GLC-SX-MM,  GLC-SX-MMD , GLC-SX-MM-RGD and SFP-GE-S transceiver modules to help you choose the suitable one. Which transceiver module will you choose? Cisco Transceiver Datasheet Here are the datasheets of these four different Cisco SFP transceiver modules. GLC-SX-MM Datasheet The GLC-SX-MM is programmed to be fully compatible and functional with all intended Cisco ...

As we know, a common SFP transceiver is generally with two ports, one is TX port which is used to transmit the signal, and the other one is RX port which is used to receive signals. Unlike common SFP transceiver, BiDi SFP transceiver is only with one port which uses an integral WDM coupler to transmit and receive signals over a single strand fiber. In fact, the compact SFP is a 2-channel BiDi SFP, which integrates two BiDi SFP in one SFP module. Therefore, a compact SFP is also with two ports as the common SFP. SFP, BiDi SFP and Compact SFP Connection Methods All  SFP transceivers  must be used in pairs. For common SFPs, we should connect the two SFPs which have the same wavelength together. For example, we use a 850nm SFP at one end, then we must use a 850nm SFP on the other end (shown in the figure below). For  BiDi SFP , since it transmits and receives signals with different wavelengths, we should connect the two BiDi SFPs which have the opposite wa...

With the growth of virtualization, cloud-based services and applications like VoIP, video streaming and IP surveillance, SMB networks need to extend beyond simple reliability to higher speed and performance. The NETGEAR ProSAFE XS712T and ProSAFE XS728T switches present the right solution for this requirement, delivering unprecedented non-blocking 10G bandwidth at an affordable cost. Have you ever used this series switch in your network? This article may provide the knowledge of NETGEAR ProSAFE series switch’s deployment and its interface requirement. NETGEAR ProSAFE 10G Series Switch Overview As shown in the figure below, the NETGEAR ProSAFE XS712T and ProSAFE XS728T are powerful smart managed switches that come with either 12 or 24 10G copper ports and either 2 combo SFP+ (XS712T) or 4 additional dedicated SFP+ ports (XS728T) for 10G fiber links. Using these 10G slots, you can create high-speed connections to a server or network backbone. For example, you can connect switches to ...