Tag Archives: GLC-LH-SM

Can We Interconnect SFP, SFP+, XFP, X2 and XENPAK?

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There are many kinds of 10G optical transceivers in the market such as SFP+, XFP, X2 and XENPAK. So when we use these modules, the most confusing problem is if we can interconnect SFP+, XFP, X2 and XENPAK. Besides this, some module users also want to know if they can connect SFP to SFP+ or if then can connect 10GBASE-SR modules to 10GBASE-LR modules. In this article, I will display some common questions often asked by module users and give the right answer mainly based on Cisco optical transceivers.

1. Can we interconnect SFP-10G-SR to XENPAK-10GB-SR or X2-10GB-SR?
The answer is yes. For this problem, you just need the correct optic on each side. If your optics are singlemode you need singlemode patch cord. If your optics are multi-mode then you need multi-mode patch cord. SFP-10G-SR, XENPAK-10GB-SR and X2-10GB-SR are all multi-mode optics, so a multi-mode fiber can solve this problem.

2. Can LC-SC patch cord connect X2-10GB-SR between SFP-10G-SR?
Yes, it’ll work fine as long as your fiber patch cord is multi-mode. Actually, the SFP+ requires LC connector but the X2 may require a SC connector. So when connect SFP-10G-SR to X2-10GB-SR, we must use a LC-SC patch cable (LC connector on one fiber end, SC connector on the other fiber end).

SFP, SFP+,XFP, X2 and XENPAK

3. Is it possible to connect X2-10GB-LR to SFP-10G-SR?
The answer is not possible. The Cisco X2-10GB-LR module supports a link length of 10 kilometers on standard single-mode fiber (SMF, G.652). However, the Cisco SFP-10G-SR module supports a link length of 300m on OM3 multi-mode fiber (MMF,OM3) and 400m on OM4 multi-mode fiber (MMF,OM4). Actually, you need to use modules with the same wavelengths, i. e. SR to SR or LR to LR.

4. Can we connect SFP-10G-SR to GLC-SX-MM?
The SFP-10G-SR is 10 Gbps only. The GLC-SX-MM is 1 Gbps only. This question means can we force SFP-10G-SR to use 1Gbps speed?  This is a very common question and the response will always be the same. The answer is NO. Because the SFP-10G-SR is 10 Gbps only. It runs at 10 Gbps link rate and no other speed. GBIC, SFP, X2, QSFP, CFP modules will only negotiate to one speed and one speed only. You cannot interconnect them.

SFP-10G-SR to GLC-SX-MM

5. Can we connect GLC-SX-MM to GLC-LH-SM?
Some users wonder if they can use GLC-SX-MM together with GLC-LH-SM? In fact, the GLC-SX-MM is multi-mode LED-based. The GLC-LH-SM is singlemode laser-based. They may (sometimes) work with mode conditioning patch (MCP) cables but it’s not generally a good idea unless it’s completely unavoidable.

FS offers a variety of fiber optic transceivers (SFP+, XFP, X2 and XENPAK) at very economical prices which can satisfy your requirements from 1G to 100G Ethernet. In addition, all these optical transceivers are in stock and you can enjoy the same day shipping service. For more information, please contact us over sales@fs.com.

Related Article: Cisco SFP-10G-SR: All You Need to Know

Are There Any Differences Between LX, LH and LX/LH?

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We usually see LX SFP, LH SFP and LX/LH SFP on many websites, and many people show their confusion about them. Whether they are the same or different? If they are dissimilar, what differences between them on earth?

The Commonly Used 1000BASE-X Standards about Ethernet
Ethernet was the result of the research done at Xerox PARC in the early 1970s. Ethernet later evolved into a widely implemented physical and link layer protocol. Fast Ethernet increased speed from 10 to 100 megabits per second (Mbit/s). Gigabit Ethernet was the next iteration, increasing the speed to 1000 Mbit/s. The initial standard for Gigabit Ethernet was produced by the IEEE in June 1998 as IEEE 802.3z, and required optical fiber. 802.3z is commonly referred to as 1000BASE-X, which is used in industry to refer to Gigabit Ethernet transmission over fiber, where options include 1000BASE-SX, 1000BASE-LX, 1000BASE-LX10, 1000BASE-BX10 or the non-standard -EX and -ZX implementation.

Gigabit Ethernet 1000BASE-LX Optical Interface Specifications

1000base-lx/lh SFP1000BASE-LX is a fiber optic Gigabit Ethernet standard specified in IEEE 802.3 Clause 38 which uses a long wavelength laser (1,270–1,355nm). The 1000BASE-LX SFP is specified to work over a distance of up to 10 km over single mode fiber and it can also run over all common types of multimode fiber with a maximum segment length of 550 m. For link distances greater than 300 m, you must install a mode-conditioning patch cord between the transceiver and the MMF cable on both ends of the link.

1000BASE-LH and 1000BASE-LX/LH Optical Interface Specifications
LH refers to Long Haul. Many vendors use both of them for certain SFP modules, but they aren’t a Gigabit Ethernet standard at all. 1000BASE-LX/LH SFP can achieve a distance up to 20 km over single mode fiber. Unlike that, 1000BASE-LH SFP operates a distance up to 70 km over single mode fiber.

Conclusion
In a word, these three modules are all referred to Gigabit Ethernet transmission. Among them, the 1000BASE-LX is a standard, the other two just are terms widely used by vendors. Other long haul transmission standards include 1000BASE-LX10, 1000BASE-EX and 1000BASE-ZX. We can see their differences more clearly in the following chart:

Name  Medium wavelength Specified distance
1000BASE-LX/LH 9/125 Single mode fiber 1310nm  10km
1000BASE-LX 62.5/125, 50/125 Multi mode fiber 1310nm 550m
1000BASE-LX10 9/125 Single mode fiber 1310nm 10km
1000BASE-LH 9/125 Single mode fiber 1310nm 25~70km
1000BASE-EX 9/125 Single mode fiber 1310nm 40km
1000BASE-ZX 9/125 Single mode fiber 1550nm 70km

Related Article: Which Patch Cable Should I Choose for My Optical Transceiver?

Overview Cisco GLC-LH-SM Of SFP Transceiver Module

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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?