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What Is the SFP or SFP+ MSA?

A small form-factor pluggable (SFP) is a type of transceiver device That HAS BEEN standardized by the MSA (Multi-Source Agreement). The MSA will define the characteristics of the system and ice Typically an agreement between multiple manufacturers. The agreements guarantee That any SFP or SFP + device from any vendor will function properly. This article will give you a more comprehensive introduction to the SFP and SFP + MSA.

An Overview of Pluggable Optical Transceiver MSA Standards

Both SFP and SFP + optical transceivers are standardized by the MSA. These documents strictly define Sufficient characteristics of an optical transceiver So THAT systems (like Ethernet switches, routers, and media converters) Vendors May Implement port on Their Devices, Therefore, MSA compliant pluggable optical transceivers (SFP or SFP +) from any vendor will function properly .

Pluggable optical transceivers are Physically Composed of a small printed circuit board (PCB) containing electronic circuity, with an electrical PCB "edge connector" at one end and, Typically, a fiber optic connector (dual LC-type in the case of SFP / SFP + modules) at the other, packaged in a metal housing including a release latch. The basic function of the device is to convert electrical transmit data from the host into an optical signal Transmitted onto a connected fiber optic cable, and, in the other direct, convert a received optical signal into an electrical one to be sent to the host system Over the Edge connector.

Cisco SFP-10G-SR

What is Defined by the MSA?

The main elements defined in the SFP / SFP + MSA are Listed as follows:

Mechanical Interface

  • Mechanical dimensions of the device (H: 8.5mm; W: 13.4mm, D: 56.5mm)
  • Transceiver edge connector TO HOST PCB-mounted electrical connector mating
  • Host Board Mechanical Layout (location / size of solder pads, etc.)
  • Insertion, Extraction and Retention Forces
  • Labeling
  • Bezel design considerations for Host Systems
  • Electrical connector Mechanical Aspects
  • Cage assembly dimensions (hollow cage mounted into the host system)

Electrical Interface

  • Pin definition
  • Timing Requirements and Status I / O
  • Module definition interface and the data field description

Besides, the Digital Diagnostics Monitoring (DDM) feature common in many modern SFP / SFP + transceivers as defined in the SFF-8472 MSA specification. "D" the GLC-LH-SMD represents the DDM function of according to industry standard MSA SFF-8472nd The SFF-8472 Added DDM interface and Outlined That DDM interface is an extension of the serial ID interface defined in the GBIC Specification, as well as the SFP MSA. For example, Brocade E1MG-SX ABOUT compatible 1000BASE-SX Fiber SFP from store ice with built-in DDM Function and Compatible with SFP MSA and SFF-8472nd

The Importance of MSAs

MSAs, like most standards Efforts, are important Primarily Because They can give customers a choice in suppliers from Which They purchase products. Freedom of choice is the foundation of the efficient operation of markets. Customers in the marketplace Should have the benefit of multiple independent suppliers, each Competing to gain a share of the market. This behavior forces suppliers to be as efficient and creative as possible, driving down costs and offering customers the widest array of options.

It is true, That some system vendors have attempted to subvert the standardizing value of the MSAs. The most common scheme is to write a unique code into some of the undefined memory in the EEPROM of each SFP / SFP +. When the transceiver is inserted into the host switch, its EEPROM is read, and, if the code is "incorrect" the module is rejected as "incompatible". But Fiber store can do it. At present, fiber Store offers a comprehensive brands compatible solution of the transceivers Which Can Meet the Demands of Cisco, HP, Juniper, NETGEAR, Brocade, etc.

Publicerat klockan 07:59, den 7 januari 2016
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Postat i kategorin Okategoriserat och taggat som cisco sfp-10g-sr, glc-lh-smd, e1mg-sx-om, msa, sfp msa,

Cisco 10GBASE SFP+ Modules

The Cisco10GBASE SFP+ modules is one of the most popular kinds of transceivers which offers customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications.

Main features of Cisco 10GBASE SFP+ modules include: it has the smallest 10G form factor ,hot-swappable input/output device that plugs into an Ethernet SFP+ port of a Cisco switch and optical inter operability with 10GBASE XENPAK, 10GBASE X2, and 10GBASE XFP interfaces on the same link. What;s more, it supports not only 10GBASE Ethernet and OTU2/OTU2e, “pay-as-you-populate” model, digital optical monitoring capability, but also the Cisco quality identification (ID) feature that enables a Cisco switch to identify whether the module is certified and tested by Cisco. The followings are some different kinds of Cisco 10GBASE SFP+ modules.

Cisco SFP-10G-SR

The Cisco SFP-10G-SR module supports link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible.

Cisco SFP 10G-SR-X

The Cisco SFP-10G-SR-X is a 10GBASE-SR module for extended operating temperature range. It supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible.

Cisco SFP-10G-LRM

The Cisco 10GBASE-LRM module supports link lengths of 220m on standard Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF). To ensure that specifications are met over FDDI-grade, OM1 and OM2 fibers, the transmitter should be coupled through a mode conditioning patch cord. No mode conditioning patch cord is required for applications over OM3 or OM4. The Cisco 10GBASE-LRM module also supports link lengths of 300m on standard single-mode fiber (SMF, G.652).

Cisco FET-10G

The Cisco FET-10G fabric extender transceiver support link lengths up to 100m on laser-optimized OM3 or OM4 multimode fiber. It is supported on fabric links only from a Nexus 2000 to a Cisco parent switch. Note this product is not orderable individually.

Cisco SFP-10G-LR

The Cisco 10GBASE-LR module supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652).

Cisco SFP-10G-LR-X

The Cisco SFP-10G-LR-X is a multirate 10GBASE-LR, 10GBASE-LW and OTU2/OTU2e module for extended operating temperature range. It supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652).

Cisco SFP-10G-ER

The Cisco 10GBASE-ER module supports a link length of up to 40 kilometers on standard single-mode fiber (SMF, G.652).

Cisco SFP-10G-ZR

The Cisco SFP-10G-ZR is a multirate 10GBASE-ZR, 10GBASE-ZW and OTU2/OTU2e module. It supports link lengths of up to about 80 kilometers on standard single-mode fiber (SMF, G.652). This interface is not specified as part of the 10 Gigabit Ethernet standard and is instead built according to Cisco specifications.

Fiberstore is a leading supplier of SFP+ transceivers. We have a large selection of SFP+ transceivers in stock, such us SFP+ MM 300m, SFP+ 10km, SFP+ 40km, SFP+ 80km, CWDM SFP+, DWDM SFP+, BiDi SFP+, etc. All of our SFP+ transceivers are tested in-house prior to shipping to ensure that they will arrive in perfect physical and working condition. We offer our customers with high-performance and cost-effective products to fulfill their requirements, contributing this way to the customer's success and satisfaction.

Publicerat klockan 03:09, den 22 december 2015
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Choose SFP+ Modules and Cables Effectively

Choosing the best type of SFP+ transceivers and cables is not always easy. You can approach the selection process by reviewing the device as a single entity or you can explore the fiber cable separately. In order to select SFP+ modules and cables effectively, it is important to know the standards set forth by the IEEE 802.3 committee. According to the IEEE 802.3 standard, the 10 Gigabit Ethernet has been ratified and is compatible with MMF and SMF transceivers. which means that the signals can maintain their signal integrity when transmitting long distances. This article will give some tips that help you make a good selection for your SFP+ modules and cables.

Ensure They are Interchangeable or Hot-Swappable

Never underestimate the power of SFP+ modules that are hot-swappable or interchangeable. They can reduce expenditures for companies, especially when devices fail prematurely because they do not have to completely shut down the system to replace the device. This is why it is so important to find SFP+ modules that are hot-swappable in order to avoid complete redesigns and the exorbitant costs associated with the practice. When the SFP+ modules have more flexibility and functionality, it can save more money and time.

Select SFP+ Modules and Cables to Optimize Your Design

SFP+ modules and cables can be used to optimize your design. Some of the best transceivers designers often choose are Cisco SFP-10G-SR compatible 10GBASE-SR SFP+ transceivers provided by Fiberstore. This type of SFP+ module is for duplex optical data communications in 10Gbit/s data transmission applications at 850 nm .Besides, there are several high density modules that are combined with high density modules to deliver exceptional performance. Many people are unaware of the functionality of these modules, but when they are incorporated, they seem to perform well.

Cisco SFP-10G-SR

Verify Device Compatibility and Compliance

Compatibility and compliance are two of the primary issues that need to be resolved in order to achieve an optimal design. To have optimal operability, designs must be able to interact and be compatible with other protocols such as Ethernet, SONET/SDH/OTN, fiber channel, and PON standards.

Know the Types of SFP+ Cables and Adapters Available for Use

There are all types of SFP+ cables available for use including the SFP+ direct attach cables, SFP active copper cables, and SFP+ Loopback Adapter Modules. When you know which is the best, you’ll choose the best cable and adapter for your design. Both passive and active SFP+ devices are available in addition to other various devices. These devices can add significant functionality to a design if they are incorporated according to the specifications and designs. Ask an expert and select the device that is best for your particular design.

Select the Device That Delivers Optimal Speeds

Efficient and fast devices are recommended for the best results. If you want to achieve optimal results, you should consider selecting the best device for the optimal speeds. There are different types of devices that support various transmission speeds, helping you achieve your desired efficiency levels.

SFP+ optical transceivers are growing in popularity because they are affordable and also efficient. They complement any design as long as the appropriate type is selected. Otherwise, signals will degrade over long distances if an inappropriate SFP+ module is chosen. Where to buy reliable and high quality SFP+ transceivers? As the main manufacturer and supplier in China, Fiberstore provides a complete range of SFP+ transceiver modules which can be customized. In addition, we also provide compatible SFP+ transceivers as alternatives to those branded by Cisco (such as CVR-X2-SFP10G), HP, Juniper Networks etc.

Publicerat klockan 07:59, den 30 november 2015
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Why Plug-and-Play Transceivers Are So Popular

Plug-and-play is a technology that allows the operating system to detect and configure internal and external peripherals as well as most adapters. It has the ability to find and configure hardware components without having to reset DIP (dual in-line package) switches and jumpers. Plug-and-play transceivers refer to hot-swappable or hot-pluggable optical transceivers, such as SFP transceivers or XFP transceivers, which can be quickly plugged into an interface of fiber optical devices. Here are the reasons why plug-and-play transceivers play such an important role in data center communications.

Cisco SFP-10G-SR

Designed to Handle Mission Critical Applications

Plug-and-play transceivers are the basics of linking and transmitting data in mission critical applications which are the foundation of a company's business, like telecommunications company or networking technical company which depend heavily on data center. Therefore it is essential that these applications run efficiently or the entire company will be stuck in trouble. The faster data can reach, the faster decisions can be made. That's why it's so important to ensure that the applications are up and running 99.99 percent of the time. Even if plug-and-play transceivers fail to work well, there is relatively little downtime because the devices can be replaced without powering down the entire system.

Time-saving and Cost-effective

There's nothing worse than a malfunctioning transceiver that needs repair or replacement. Imagine that if you have to redesign an application every time one component malfunctions. Redesigns are not favorable because they are expensive and time consuming. Using plug-and-play transceivers can avoid redesign, because they are highly compatible and can be easily replaced. This is an important factor why plug-and-play transceivers are more popular than standard transceivers, because you can save time and money with plug-and-play transceivers and avoid redesigns that could ruin the efficiency of your work.

Upgrade When Needed

This will allow you to keep your capital liquid and invest in other aspects of your business. When new devices are introduced on the market, it will be easy to drop them into your existing design. Many of the transceivers are 100% compatible and are backed by a warranty. Thus, designers have nothing to fear by waiting to upgrade. If the upgrade doesn't work, they'll be refunded for the cost of the device.

Increase Productivity and Efficiency

As mentioned above, plug-and-play transceivers allow people to replace transceivers easily without completely shutting down their entire system or redesigning the application. When it's not required to power down the device for replacement or repair, productivity and efficiency improves. This is why so many telecommunications company and networking technical company are choosing plug-and-play devices over standard devices, especially the plug-and-play transceivers. Currently, fiber plug-and-play solutions for data center applications are very necessary to transmit data with a high degree of integrity, reliability and efficiency.

All in all, there are so many reasons that plug-and-play transceivers are preferred over standard transceivers. Fiberstore provides a wide range of plug-and-play transceivers, such as Cisco CVR-X2-SFP10G compatible module, Cisco SFP-GE-S compatible SFP module and other transceiver modules compatible with many other famous brands.

Publicerat klockan 08:06, den 18 november 2015
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How to Choose the 10G Transceivers

From the origin of 10G Ethernet, 10G optical transceivers have been developed along the way to meet the increasing demand for higher-performance servers, storage and interconnects. However, selecting the best type of 10G optical transceivers is not always easy. There are a variety of factors that must be considered. To be able to select a matching transceiver for a given application and hardware, all below stated parameters must be considered.

10G optical transceivers

Transceiver “form-factor” / MSA Type

The transceiver has to mechanically and electrically fit into a given switch, router etc. Transceiver MSAs define mechanical form factors including electric interface as well as power consumption and cable connector types. XENPAK is the first MSA for 10 Gigabit Ethernet. The XENPAK MSA defines a fiber optic or wired transceiver module which conforms to the 10 Gigabit Ethernet standard of the IEEE 802.3 working group. Then X2 followed with smaller size. XFP specification was launched after X2 with more contact size. SFP and SFP+ are the newest and the most common form factors which enable 10G Ethernet.

Transport Media

Choose the right 10G optical transceivers according to the transport media, namely the fiber type. There are a number of 10 Gb/s media systems, with a few of the most widely used systems specified in the standard described here:

  • 10GBASE-CX4
    10 Gb/s Ethernet over short-range copper cable assemblies (15 m maximum).
  • 10GBASE-T
    10 Gb/s Ethernet over unshielded and shielded twisted-pair cables. Category 6A or better twisted-pair cables are required to reach the maximum distance specified.
  • 10GBASE-SR
    10 Gb/s Ethernet over short-range multimode fiber optic cables.
  • 10GBASE-LR
    10 Gb/s Ethernet over long-range single-mode fiber optic cables.
Connector Type

Choose the right transceivers which are compliant with the proper connectors. The connectors widely-used mainly have following types: Duplex LC connector, MPO connector, and MTP connector (a high performance MPO connector). For instance, HP 455883-B21 10GBASE-SR SFP+ transceiver module provided by Fiberstore is compliant with the Duplex LC connector.

Transmission Distance

When we choose the ideal 10G optical transceivers, we must consider the transmission distance and the reach requirements we need in reality. The most common types of transceivers divided by its transmission distance can reach up to 100m, 150m, 300m, 400m, 1km, 2km, 10km, 40km, etc. For example, Cisco SFP-10G-SR compatible 10GBASE-SR SFP+ transceiver supports link lengths of 300m over multimode fiber cables. And Juniper XFP-10G-L-OC192-SR1 compatible 10GBASE-LR transceiver provides superior performance for SONET /SDH and Ethernet applications at up to 10km links.


The wavelength the transceivers operate with is an important factor in choosing the proper 10G optical transceivers. For instance, Fiberstore's 10G CWDM XFP is designed for single mode fiber and operates at a nominal wavelength of CWDM wavelength. There are fourteen center wavelengths available from 1350nm to 1610nm, with each step 20nm.

Fiberstore provides various types of 10G optical transceivers including single-mode and multi-mode with different channels and wavelengths. In order to achieve a fast and successful selection of the 10G optical transceivers, we should consider all the above-mentioned factors comprehensively.

Publicerat klockan 10:55, den 16 november 2015
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FAQs on Third-Party SFP Transceiver

In order to cut down the costs on the expensive SFP transceiver modules, many companies are seeking for Cisco SFP alternatives to use. When choosing SFP transceivers, many people often run into several frequently asked questions involving the Cisco Catalyst line of switches, and whether we can use a Cisco compatible SFP (a 3rd party SFP) with them. Here are some common questions we might have when using a 3rd party SFP transceiver. And from the answers, we might have a deeper understanding of using these 3rd party SFP transceivers.

Cisco SFP-10G-SR

What Does "Third-Party" Mean?

In commerce, a "third-party" means a supplier (or service provider) who is not directly controlled by either the seller (first party) or the customer/buyer (second party) in a business transaction. For example, in the fiber optics industry, all fiber optic transceivers are defined by Multi-Source Agreement (MSA). MSAs strictly define the operating characteristics of fiber optic networking equipment, so that system vendors may implement ports in their devices that allow MSA compliant networking components produced by different manufacturers are interoperable. As long as a manufacturer complies to MSA guidelines, their transceiver modules will function and operate identically to any other manufacturer's MSA-compliant transceivers. For instance, Fiberstore's 100% MSA compliant GLC-LH-SMD transceiver will function identically to a Cisco GLC-LH-SMD transceiver and will be 100% compatible with Cisco networking equipment.

Can We Use Third-Party SFPs With Cisco Catalyst Switches?

In most cases, if you plugged a non-Cisco SFP transceiver into a Cisco Catalyst switch, you would get an error message like the following:
%PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported transceiver found in Gi1/0/0 
%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port 65538 has bad crc

Why does that happen? Well, you need to know that every SFP is a small chip containing a range of information about the device, including its vendor name, vendor ID, serial number and CRC. When it is plugged into a Catalyst's SFP port the first time, the Catalyst queries this chip for its credentials. If it's not Cisco, your Cisco Catalyst switches would be configured by default not to work with the 3rd party (non-Cisco) SFPs, so the Catalyst would automatically shut the port down entirely. It's somewhat underhanded, but since SFPs aren't overseen by a central standards body -unlike WiFi, for example- there's no one around to tell Cisco not to do it. This can ultimately lead to needlessly expensive upgrades when third-party SFPs truly can work just as well in all Cisco Catalyst switches. In fact, this is not a problem, because some hidden commands or 100% compatibility technology developed by some vendors can solve this problem and enable third-party SFPs work well with Cisco Catalyst switches.

Are Third-Party Cisco-Compatible Transceivers Safe?

In our experience, there is absolutely no possibility that a third-party transceiver will cause problems. If the SFP is well-made and from a reliable vendor, there's simply no reason it should cause any issues. Most third-party transceivers are made and assembled in exactly the same plants assembling officially-branded transceivers and the chances of even a poorly-made one causing actual damage are extremely minimal. There are only a very small number of devices in this world with the specialty equipment needed to produce fiber optic hardware. Actually, there is no difference between an official Cisco transceiver and a third-party plug, aside from the brand name and the price difference. Generally speaking, the cost of an officially-branded SFP transceiver is more expensive than a 3rd party one. Take 1000BASE-SX SFP (GLC-SX-MMD) for example, the GLC-SX-MMD price of Cisco is about $ 500.00, but you can easily find a 3rd party one that can take a discount at up to 90% off.

The above-mentioned are the most frequently asked questions in the usage of a third-party SFP. Where to buy the most reliable third-party SFP transceivers at lowest prices? Fiberstore, as the main professional fiber optic products manufacturer in China, provides third-party SFP transceivers which are fully compatible with major brands (Cisco, HP, NETGEAR, Finisar, Juniper, etc).

Publicerat klockan 09:12, den 20 oktober 2015
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