Cisco sfp lx vs lh : What's the difference?

Generally a module is either made for single mode (More distance) / multimode (short distance). But this module can be used for both Single mode and Multimode.

If used with SM fiber it can go upto 10Km

It used with MM it can go upto 550meters (depend on what kind os MM fiber you have) You need a mode conditioning patch chord too with legacy MM i think OM1 and 2.

Long Haul ( LH ) denotes longer distances while Long Wavelength ( LX ) denotes less energy which is obviously shorter distance. Why does Cisco use both LX and LH for certain SFP modules

In the realm of Cisco SFP (Small Form-factor Pluggable) transceivers, LX and LH both refer to specific types of long-wavelength/long-haul modules. Though sometimes used interchangeably, there are differences between the two:

1. Distance/Reach:

   • LX: The LX SFP standard is intended for longer distances than SX but not as long as the LH standard. It typically supports distances up to 10 kilometers (km) over single-mode fiber (SMF) and can also support shorter distances over multimode fiber (MMF), usually around 550 meters.

   • LH: The LH SFP standard is designed for long haul and has a reach of up to 70 km on certain platforms and under specificconditions. The usual reach is around 40 km.

2. Wavelength:

   • LX: Typically operates at a wavelength of 1310 nm.

   • LH: Also operates at 1310 nm, but given its long-haul capability, it's designed to be more powerful to cover greater distances.

3. Fiber Type:

   • LX: Can work with both multimode (short distances) and single-mode fibers (long distances).

   • LH: Primarily designed for single-mode fiber for longer reach.

4. Design Intention:

   • LX: "LX" originally stood for "Long-wavelength EXtended." It was designed to be an extended version of the short-wavelength (SX) SFPs.

   • LH: "LH" stands for "Long Haul," indicating its purpose for longer-distance transmissions than LX.

5. Cost:

   • LH: Given its extended capabilities, LH modules tend to be more expensive than LX modules.

In the context of Cisco and many other vendors, you might encounter "GLC-LH-SM" which indicates Gigabit SFP, Long Haul, Single Mode. When selecting a module, always consider the specific requirements of your network, including distance, compatibility, and budget. It's also essential to refer to Cisco's documentation or consult with a network specialist to ensure you're selecting the appropriate module for your needs.

What are Cisco sfp lx and Cisco sfp lh respectively?

What is Cisco sfp lx ?

The Cisco SFP-LX module represents a specific type of Small Form-factor Pluggable (SFP) transceiver that adheres to the LX standard for Gigabit Ethernet. "LX" stands for "Long-wavelength EXtended". Here are the main characteristics of the Cisco SFP-LX module:

1. Speed and Protocol: It's designed for Gigabit Ethernet (1 Gbps) applications.

2. Wavelength: The LX SFP typically operates at a wavelength of 1310 nm.

3. Distance/Reach:

   • Over Single-Mode Fiber (SMF): It can support distances up to 10 kilometers (km).

   • Over Multi-Mode Fiber (MMF): It can also be used for shorter distances, often around 550 meters, when used with MMF. However, the use of a mode conditioning patch cord might be required in some cases.

4. Connector: Typically, it uses LC connectors.

5. Compatibility: Like all SFP modules, the SFP-LX is hot-swappable, meaning it can be plugged or unplugged from a live switch or router without the need to power down the device.

6. Fiber Type: It's designed to work with both single-mode (for longer distances) and multimode fibers (for shorter distances), but as mentioned above, there could be some limitations when using with MMF.

When you see a module designated as "GLC-LX-SM" in Cisco's nomenclature, it generally indicates a Gigabit LX SFP designed for single-mode fiber. Always refer to the specific product documentation or data sheet to ensure you have detailed and accurate specifications.

What is Cisco sfp lh?

The Cisco SFP-LH module is a specific type of Small Form-factor Pluggable (SFP) transceiver that adheres to the LH, or "Long Haul", standard for Gigabit Ethernet. Here are the key characteristics of the Cisco SFP-LH module:

1. Speed and Protocol: It's designed for Gigabit Ethernet (1 Gbps) applications.

2. Wavelength: The LH SFP typically operates at a wavelength of 1310 nm.

3. Distance/Reach: The LH designation often implies longer reach than the LX module. Specifically, over Single-Mode Fiber (SMF), it can support distances up to 70 kilometers (km), though this can vary based on the specific module and its design. Ensure to check specific product details.

4. Connector: Typically, it uses LC connectors.

5. Compatibility: Like all SFP modules, the SFP-LH is hot-swappable, meaning it can be plugged or unplugged from a live switch or router without the need to power down the device.

6. Fiber Type: It's primarily designed for long-distance transmission over single-mode fiber.

It's worth noting that in many contexts, "LX" and "LH" terms are used interchangeably, especially since both use the same 1310 nm wavelength. However, the key differentiator is the supported distance, with LH modules being optimized for longer hauls than LX. Always refer to the specific product documentation or data sheet to ensure you have detailed and accurate specifications.

Does 1000BASE-LX SFP Work with 1000BASE-LH SFP?

1000BASE-LX SFP and 1000BASE-LH SFP are the most commonly used components in Gigabit Ethernet applications. Here comes a little question: Does 1000BASE-LX SFP work with 1000BASE-LH SFP? The answer is: Yes, 1000 BASE-LX SFP can work with 1000 BASE-LH SFP. For example, Cisco 1000 BASE LX/LH SFP is either made for single mode (long distance) or multimode (short distance). But this module can also be used for both single mode and multimode. In addition, as there are so many types on the market, careful attention should be paid to the distance and price differences between multimode and single mode fibers.

Conclusion

To sum up, about the topic “1000BASE SFP LX vs LH”, we can conclude that: 1000BASE-LX and 1000BASE-LH both refer to Gigabit Ethernet transmission; between them, 1000BASE-LX is a standard, 1000BASE-LH is the term widely used by suppliers. FS.COM offers a wide range of 1000BASE-LX/LH SFP transceiver modules which are compatible with major brands, like Cisco, Juniper, Dell, Brocade, etc. Our optical transceivers are able to fulfill enterprises, service providers, telecom operators, and SAN providers to build and fulfill their existing and future network expansions.