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Installing and Removing a QSFP+ Transceiver


The 40-Gigabit QSFP + transceiver module is a hot-swappable, parallel fiber optical module with four independent optical transmit and receive channels. These channels can terminate in another 40-Gigabit QSFP + transceiver, or the channels can be broken out to four separate 10-Gigabit SFP + transceivers. The QSFP + transceiver module connects the electrical circuitry of the system with either a copper or an optical external network. The transceiver is used Primarily in short reach applications in switches, routers, and data center equipment where It provides higher density than SFP + modules.


Installing a QSFP + Transceiver

The QSFP + transceiver module can have either a bail-clasp latch or a pull-tab latch. Installation procedures for bothering types of latches are provided.

To install an QSFP + transceiver module, follow These steps:
Step 1 Attach an ESD wrist strap to yourself and a properly grounded point on the chassis or the rack.
Step 2 Remove the QSFP + transceiver module from its protective packaging.
Step 3 Check the label on The QSFP + transceiver module body to Verify That You Have the correct model for your network.
Step 4 For optical QSFP + transceivers, remove the optical bore dust plug and set it aside.
Step 5 For transceivers equipped with a bail-clasp latch:
a. Keep the bail-clasp aligned in a vertical position.
B. Align the QSFP + transceiver in front of the module's transceiver socket opening and Carefully slide the QSFP + transceiver into the socket Until The transceiver makes contact with the socket electrical connector. (See Figure1)

Installing QSFP +

Step 6 QSFP + transceivers equipped with a pull-tab:
a. Hold the transceiver So THAT the identifier label is on the top.
B. Align the QSFP + transceiver in front of the module's transceiver socket opening and Carefully slide the QSFP + transceiver into the socket Until The transceiver makes contact with the socket electrical connector.
Step 7 Press firmly on the front of the QSFP + transceiver with your thumb to fully seat the transceiver into the module's transceiver socket. (See Figure2)

Installing QSFP +

Step 8 For optical QSFP + modules, reinstall the dust plug into the QSFP + transceivers, optical bore Until you are ready to attach the network interface cable. Do not remove the dust plug Until you are ready to attach the network interface cable.

Removing a QSFP + Transceiver

To remove a QSFP + transceiver, follow These steps:
Step 1 For optical QSFP + transceivers, disconnect the network interface cable from the QSFP + transceiver connector.
Step 2 QSFP + transceivers equipped with a bail-clasp latch (See Figure3, top view):
a. Pivot the bail-clasp down to the horizontal position.
B. Immediately install the dust plug into the optical transceivers bore.
C. Grasp the sides of the QSFP + transceiver and slide it out of the module socket.

Removing QSFP +

Step 3 QSFP + transceivers equipped with a pull-tab latch (See Figure3, bottom view):
a. Immediately install the dust plug into the transceiver's optical bore.
B. Grasp the tab and gently pull to release the transceiver from the socket.
C. Slide the transceiver out of the socket.
Step 4 Place the QSFP + transceiver into an antistatic bag.


As 40 GbE are Widely deployed, 40G transceiver optics are ubiquitous. A good practice and correct installation are very important for 40G network systems, not only to protect the 40G transceiver optics and device from damage, but overpriced to ENSURE a stable performance of the system. Fiber store offers a wide range of 40G transceiver modules, Such as QSFP-40G-LR4 S, QSFP-40G-SR4-S, QSFP-40G-ER4, etc. All These transceivers are tested in the original fire switches to guarantee the high compatibility with major brands. For more information or quotation, please contact us via 

Publicerat klockan 11:06, den 26 januari 2016
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Detailed Breakdown of MPO Connectors and 40G QSFP+ Transceivers

As the speed and transfer rates of computer hardware continue to grow alongside demand for ever-more data, new cabling becomes a necessity to keep up. Backbones for 40G on multimode fiber generally use MPO connectors which work with QSFP+ transceivers to allow four simultaneous 10G or better connections. An upgrade to QSFP+ can mean a significant reduction in overall cabling, which brings better reliability and cost-effectiveness.

MPO can work at higher speeds as well, able to bundle hundreds of individual fiber lines at once into a single terminator. As this is a relatively new standard, MPO connectors are not well-understood by many people. However, they're necessary to deliver the speeds promised by today's top-line backbones.

Things You Need To Know About MPO Connectors

1. What Is MPO MPO is short for the industry acronym—"multi-fiber push on". The MPO connector is a multi-fiber connector which is most commonly defined by two documents: IEC-61754-7 and EIA/TIA-604-5. Here is a MPO connector with parallel optics transceiver and pinouts for 40G and 100G. Generally, the backbone cable that is permanently installed will end in connectors with pins inside mating adapters, effectively creating a "socket" type connection. Patchcords will have no pins since they are subject to damage because they simply protrude from the connector. Transceivers will be set up as jacks also, with pins inside the transceiver socket.


2. MPO vs MTP One of the biggest areas of confusion is in regards to naming, with the cabling in question sometimes being referred to as MPO or MTP.

MTP is a particular brand of MPO-compliant fiber cables from USConec. They incorporate a number of revisions to the overall design, such as removable connector housings, while still remaining 100% intercompatible with other MPO products.

Whether they're worth the extra money is largely a matter of opinion at this point, although they have their benefits. The key point is that MTP is simply one specific implementation of MPO whose creators, undoubtedly, would like to see become more standard in the future.

Things You Need To Know About 40G QSFP+ Transceivers

QSFP+ transceiver is a hot-swappable, parallel fiber-optical module with four independent optical transmit and receive channels. These channels can terminate in another 40-Gigabit QSFP transceiver, or the channels can be broken out to four separate 10-Gigabit SFP+ transceivers.

The QSFP+ transceiver link length for either 40 Gigabit Ethernet or high density 10 Gigabit Ethernet application is up to 100 m using OM3 fiber or 150 m using OM4 fiber. These modules are designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 38 contact edge type connector. The optical interface uses an 8 or 12 fiber MTP (MPO) connector. For example, both HP JG325B compatible QSFP + transceiver and Arista QSFP-40G-SR4 compatible QSFP + transceiver from Fiberstore can achieve distance of 100m over OM3 fiber and 150 m over OM4 fiber.

Fiberstore offers a wide range of MPO connectors and 40G QSFP+ transceivers which are 100% compatible with many famous brands like Cisco, HP, Juniper, Nortel, Force10, D-link, 3Com. Besides, we also provide high-quality and cost-effective cables such as MTP trunk cables, QSFP+ breakout cable, LC to MTP jumpers, etc.

Publicerat klockan 07:45, den 19 januari 2016
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40G and 100G Pluggable Optics in Data Center

In order to meet the demand for increased network bandwidth, migration to 40G Ethernet links for switch to server and storage area network connections in data centers and 100G Ethernet links for core switching and routing connections in the backbone is the trend.

The requirement for higher data rates is being driven by many factors. Switching and routing, virtualization, convergence and high-performance computing environments are examples of where these higher network speeds will be required within the data center environment. Additionally, Internet exchanges and service provider peering points and high-bandwidth applications, such as video-on-demand, will drive the need for a migration from 10- to 40- and 100-Gbit interfaces.

40G Pluggable Optics

There is various ideal equipment for 40 Gigabit Ethernet applications, such as cables, transceivers, connectors and switches for 40G transmission. For instance, OM3 and OM4 multimode fibers are widely used in 40 Gigabit applications especially in data centers. These cables have lower cost than singlemode fibers, for they can avoid higher costs created by single-mode laser source. The transceivers connected by cables is at the center of the 40 Gigabit Ethernet network layer. They are usually connected by OM3 or OM4 fibers and can be plugged into a variety of components including interface cards and switches or network servers. The common types of 40G transceivers are C Form-factor Pluggable (CFP) transceivers, Quad Small-Form Pluggable (QSFP) transceivers and CXP transceivers. For example, Cisco QSFP-40G-CSR4 compatible QSFP+ transceiver supports link lengths of 82m, 300m and 400m, respectively, on OM2, OM3 and OM4 multimode fibers at a wavelength of 850nm.


100G Pluggable Optics

100G is ready here. Tens of thousands of 100G Ethernet links deployed in core routers and carrier switches. Vast majority are CFP modules and CFP2 deployments are now starting. In addition,100G is rapidly expanding. For instance, new optical standards for the data center (100G SR4, CWDM4, PSM4) and new higher density 100G module form factors like CFP4 and QSFP28 are on the way. High port-count 100G switches are being designed and many 100G modules will be used to support high-density 10G and 25G. It is said that 100G and 4x 25G deployments are expected to grow substantially starting in 2015. 100G products mainly include 100GBASE-SR10 and 100GBASE-LR4 CFP/CFP2/CFP4 and 120G AOCs. Additionally, QSFP28 as the 100G module form factor of choice for new data center switches is also launched.

40G vs. 100G in the Data Center

The most direct difference of 40G and 100G optics is the data rate. But actually, 40G and 100G optics have their own merits.

Characteristic of 40G Pluggable Optics

  • Lowest cost per bit
  • MMF reaches up to 300 m
  • Breaks out to 4 x 10G

Characteristic of 100G Pluggable Optics

  • Highest density per bit
  • Lowest power consumption
  • MMF reaches up to 100m for now
  • Breaks out to 4 x 25GE

Content and application growth is driving the growth in bandwidth and traffic as well as growth in optical links. 40G and 100G optics developments are supporting the growth in traffic with smaller module form factors for higher port density with lower power consumption and lower cost per bit. Meanwhile, new link speeds like 25G, 50G, 200G and 400G are being standardized. The pluggable optics will continue to develop to further satisfy the changing requirements in data center.

Publicerat klockan 03:29, den 6 januari 2016
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40GBASE-SR4 QSFP + Transceiver Overview

QSFP+ interfaces a network device motherboard (for a switch, router, media converter or similar device) to a fiber optic cable. It is an industry format jointly developed and supported by many network component vendors, supporting data rates from 4x10 Gbit/s. The 40GBASE QSFP+ modules offer customers a wide variety of high-density 40 Gigabit Ethernet connectivity options for data center, high-performance computing networks, enterprise core and distribution layers, and service provider transport applications.

The IEEE 802.3ba committee ratified the 40 Gigabit Ethernet standard and along with the general specification, defined a number of fiber optic interfaces. The 40G QSFP+ standard interfaces include QSFP-40G-SR4, QSFP-40G-CSR4, QSFP-40GE-LR4, etc. The following part will mainly introduce the 40GBASE-SR4 QSFP+ transceiver.

Specifications of 40GBASE-SR4 QSFP + Transceiver

The 40GBASE-SR4 QSFP+ transceiver modules support link lengths of 100m and 150m respectively on laser-optimized OM3 and OM4 multimode fibers. It primarily enables high-bandwidth 40G optical links over 12-fiber parallel fiber terminated with MPO/MTP multifiber connectors. And also, it can be used in a 4 x 10G mode for interoperability with 10GBASE-SR interfaces up to 100m and 150m on OM3 and OM4 fibers respectively. The worry-free 4 x 10G mode operation is enabled by the optimization of the transmit and receive optical characteristics of the QSFP-40G-SR4 to prevent receiver overload or unnecessary triggering of alarm thresholds on the 10GBASE-SR receiver, at the same time being fully interoperable with all standard 40GBASE-SR4 interfaces. The 4 x 10G connectivity is achieved by using an external 12-fiber parallel to 2-fiber duplex breakout cable, which connects the 40GBASE-SR4 module to four 10GBASE-SR optical interfaces. Below is a picture of 40GBASE-SR4 QSFP+ transceiver.


Comparison Between QSFP-40G-SR4 and QSFP-40G-CSR4

40GBASE-CSR4 QSFP modules extend the reach of the IEEE 40GBASE-SR4 interface to 300 and 400 meters on laser-optimized OM3 and OM4 multimode parallel fiber, respectively. Each 10-gigabit lane of this module is compliant to IEEE 10GBASE-SR specifications. This module can be used for native 40G optical links over 12-fiber parallel cables with MPO/MTP female connectors or in a 4x10G mode with parallel to duplex fiber breakout cables for connectivity to four 10GBASE-SR interfaces. Cisco compatible QSFP-40G-CSR4 transceiver from Fiberstore is optimized to guarantee interoperability over the complete specification range of 10GBASE-SR.

Fiber Large 40G QSFP + Solutions

As the leading and professional supplier in the optical communication industry, Fiberstore offers high quality 40G QSFP+ transceivers including 40GB-LR4-QSFP, QSFP-40G-CSR4, QSFP-40G-PLR4, QSFP-40G-SR4, etc. All these transceivers are 100% compatible with major brands like Cisco, HP, Juniper, Nortel, Force10, D-link, 3Com. If you’re connecting an optical jumper cable from the 40G QSFP+ transceiver module in a switch port straight to a server interface, you’ll need a brief cable using the correct cable connectors on each side. If you’re connecting a 40G QSFP+ transceiver module in a switch port to an optical connector termination for your data center or cabling closet, it will require a cable with different types of optical connectors on both ends.

Publicerat klockan 08:11, den 14 december 2015
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Postat i kategorin Okategoriserat och taggat som qsfp-40g-csr4, jg325b, 40gb-lr4-qsfp, qsfp-40g-sr,