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Knowledge of Multi-source Agreement

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Fiber Optical TransceiverWe usually see some products that are compliant with MSA when refers to fiber optic transceivers, but what does MSA mean? It seems like a standard that is used to define the optical transceiver. In fact, MSAs are not official standards organizations. Instead, they are agreements that equipment vendors assume when developing form factors for communications interfaces. These form factors, usually called the transceiver modules, are typically deployed in active electronics such as switches, servers and multiplexers. In this text, some knowledge of the MSA will be introduced.

What is Multi-source Agreement?

MSA stands for multi-source agreement, which is an agreement between multiple manufacturers to make products which are compatible across vendors, acting as de facto standards, establishing a competitive market for interoperable products. Products that adhere to MSAs include optical transceivers (SFP, SFP+, XENPAK, QSFP, XFP, etc), fiber optic cables, and other networking devices. MSAs strictly define the operating characteristics of these optical transceivers so that system vendors may implement ports in their devices that allow MSA compliant transceivers produced by name brand, as well a third party vendors, to function properly. That is, transceivers may be purchased from any of the multiple sources in the open market, like Fiberstore. MSAs are also important in the cabling industry as the density, line speed, power consumption and typical costs of a MSA can strongly impact its success in the marketplace. This, in turn, can drive the choice for both connector and media type.

Why is Multi-source Agreement  so Important?

Equipment vendors all rely on MSAs when designing their systems, ensuring interoperability and interchangeability between interface modules, that is every supplier can produce the transceiver modules with the same functions. For this reason, there are many module suppliers from which customers can choose freely. As we all know, freedom of choice is the foundation of the efficient operation of markets. In order to gain a bigger share of the market, suppliers may act as efficiently as possible, which may drive down costs and offer the widest options to customers. Besides, since there are so many excellent 3rd party optical transceiver module suppliers in the market that network operators don’t need to purchase optical transceivers directly from system (original brand) vendors, which will also save huge costs. Finally, there is no doubt that all these will help support and encourage creation and adherence to standards at the same time. Over the past decade, the MSA process has helped accelerate the acceptance of modules such as SFP+ and CFP, which allow optical transceivers to support greater bandwidth such as 40G and 100G.

Approved Fiber Optica Transceiver Multi-source Agreements

MSA is a popular industry format jointly developed and supported by many network component vendors, most common optical transceivers are specified by it at present. MSAs usually specify parameters for optical transceivers and their guideline values, such as the electrical and optical interfaces (e.g. SX, LX, EX, ZX, etc), mechanical dimensions, electro-magnetic values and other data. This data is accessible by the host system over the I2C interface, as is the status of the optional DDM functions. Some approved fiber optica transceiver multi-source agreements are listed in the table below:

Name Year Brief Description Keywords/Applications
GBIC 2000 GigaBit Interface Converter Designed for Gigabit Ethernet, SDH/SONET (2.5 Gb/s) and Fibre Channel (4Gb/s). Superseded by SFP
SFP 2001 Small Form-factor Pluggable Designed for Gigabit Ethernet, SDH/SONET (2.5 Gb/s) and Fibre Channel (4Gb/s)
XENPAK 2001 Fiber optic transceiver for 10Gb Ethernet Superseded by X2 and SFP+
X2 2005 Fiber optic transceiver for 10Gb Ethernet Superseded by SFP+
XFP 2005 Fiber optic transceiver for 10Gb Ethernet Designed for 10Gb/s. Supports 8Gb/s Fibre Channel, 10 Gb/s Ethernet and Optical Transport Network
SFP+ 2013 Fiber optic transceiver for 10Gb Ethernet Designed for 10Gb/s. Supports 8Gb/s Fibre Channel, 10 Gb/s Ethernet and Optical Transport Network standard OTU2
QSFP/QSFP+ 2013 Quad Small Form-factor Pluggable 40G Supports Ethernet, Fibre Channel, InfiniBand and SONET/SDH standards up to 40GB/s and 100Gb/s
CFP 2013 C Form Factor Pluggable (100G) Optical transceiver form factors supporting 40Gb/s and 100Gb/s. CFP, CFP2 and CFP4
CXP In Progress C Form Factor Pluggable Supports Infiniband and Ethernet to 100G. CXP and CXP2

Some Common Pluggable Fiber Optic Transceivers Type

There are so many transceivers in FiberStore.Such as SFP Plus transceiver, X2 transceiver, XENPAK transceiver, XFP transceiver, SFP transceiver module (Mini GBIC), GBIC transceiver and so on. But what are fiber optic transceivers do you know? Fiber optic transceiver is a short distance to long distance twisted pair electrical signals and optical signals to be interchanged Ethernet transmission media conversion unit, in many places, also known as media converter. Products are generally used in an Ethernet cable can not be covered, you must use the fiber to extend the transmission distance of the actual network environment, and is usually located in the metropolitan area of broadband access layer applications; while helping the fiber last mile connections to the metro network and more on the outer layer of the network also played a huge role.

In order to ensure the card with other manufacturers, repeaters, hubs and switches and other network equipment is fully compatible fiber optic transceiver products must strictly comply with 10Base-T, 100Base-TX, 100Base-FX, IEEE802.3 and IEEE802.3u Ethernet, etc. web standards, in addition, anti-electromagnetic radiation in the EMC aspects should meet FCC Part15. As the major carriers are efforts to build community networks, campus networks and enterprise networks, so the amount of fiber optic transceiver products are constantly improved in order to better meet the access network construction.

Now on the market most of the optical transceiver supports Pluggable, So, today I will show you some common Pluggable fiber optic transceivers type:

SFP (Small Form-factor Pluggable) Transceiver Module
1,Gigabit optical module, FE SFP optical module, 155Mb SFP optical module, 622Mb SFP optical module, 2.5G SFP optical module: Small pluggable optical transceiver module, LC connector.
2,Gigabit BIDI optical module,Mbps BIDI optical module: BIDI (bidirectional transmission) optical transceiver module, LC connector.
BIDI GEPON OLT optical modules: BIDI GEPON OLT optical transceiver module, SC connector.
3,Gigabit CWDM optical modules: Gigabit CWDM (Coarse Wavelength Division Multiplexing) optical transceiver module, LC connector.
4,Gigabit SFP electrical interface module: RJ-45 Interface
5,Gigabit SFP cable: dedicated to interconnecting devices, hot-swappable

SFP + (10 Gigabit Small Form-factor Pluggable)Transceiver Module
1, SFP + optical modules:10 Gigabit sfp+ module LC interface
2, SFP + cables: dedicated to interconnecting devices, hot-swappable

GBIC (Gigabit Interface Converter, Gigabit Ethernet Interface Converter) Transceiver Module
1, GBIC transceiver modules: hot-pluggable optical transceiver module SC interface
2, GBIC electrical interface modules: hot-pluggable and RJ-45 interface
3,GBIC stacking module: dedicated to interconnecting devices, hot-swappable HSSDC(High Speed Serial Data Connection) Interface

XFP (10 Gigabit Small Form-factor Pluggable,10 Gigabit Ethernet interfaces small pluggable) Transceiver Module
XFP module is 10 Gigabit Ethernet interfaces small pluggable optical transceiver module LC interface

XENPAK (10 Gigabit Ethernet Transceiver Package,10 Gigabit Ethernet interface transceiver collection package) module
Optical transponder, hot-swappable, SC Interface

Overview Cisco GLC-LH-SM Of SFP Transceiver Module

Information age, the network has been closely linked with our lives.Electronic products play a significant role in our life. It helps to make us lives happy and easier. So the optical transceiver modules help us to use the network more high speed. Do you have a transceiver module? If you want to have a transceiver , I would recommend fs.com . It is a worldwide leading manufacturer & supplier of fiber optic transceiver. And all our transceivers are 100% compatible with major brand as follows and backed by a lifetime warranty. For example, the hot selling products : cisco glc-lh-sm. In Fiberstore ,the sfp transceiver module was hot sellers. Today ,know the cisco glc-lh-sm knowledge in this article.

Cisco GLC-LH-SM is hot – swappable and designed to plug directly into your SFP/GBIC interface slot in your router and switch for Ethernet & Fibre Channel network interface applications. It is a SFP fiber optic transceiver working at 1300nm wavelength, GLC LH SM could use with both multimode optical fiber and single mode optical fiber, it is small size transceiver with LC interface and it is hot swappable, easy to use, no need further configuration. GLC LH SM is used in Gigabit network and its working distance could reach 10km max, data transfer rate at 1Gbps and it works based on IEEE 802.3z standards. Our products are equivalent to Cisco GLC LH SM and compatible with Cisco equipment.

The glc-lh-sm transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier(TIA) and MCU control unit. All modules satisfy class l laser safety requirements. The GLC-LH-SM module fully compatible with SFP Multi-Source Agreement(MSA).The GLC-LH-SM must be operated within the specified temperature and voltage limits. The optical ports of the module shall be terminated with an optical connector or with a dust plug.

Cisco GLC-LH-SM General Information:

Product Number: GLC-LH-SM
Product Name: Cisco 1000Base-LX/LH SFP
Form Factor: Plug-in module
Device Type: Transceiver module

Cisco GLC-LH-SM Technical Specifications:

Product Type: SFP
Data Rate: 1Gbps Gigabit Ether
Wavelength: 1310nm
Data range: 10km
Connector Type: LC Duplex
Cable Type: Single-Mode Fiber (SMF)

Cisco GLC-LH-SM Application:

Gigabit Ethernet
Fiber Channel
Switch to Switch interface
Switched backplane applications
Router/Server interface
Other optical transmission systems

All GLC-LH-SM and GLC-LH-SMD transceivers are tested in-house by our trained staff members prior to shipping to ensure that they are in perfect physical and working condition when they finally arrive to the destination of your choice.We also have other transceiver modules,such as XENPAK, XFP, GBIC, SFP Plus, X2 and so on.

Related Articles: 

A Quick Overview of Cisco GLC-LH-SM SFP Module

GLC-LH-SM vs SFP-GE-L: What’s the Difference?

Which One to Select, GLC-LH-SM Vs GLC-LH-SMD?