Cisco 3750 sfp

Types of Cisco 3750 SFPs

The Cisco 3750 SFP provides reliable network connectivity at high speed. The table type is determined by the distance it covers at a standard metric temperature. The Short-Range (SFP) is designed for up to 550m on OM3 multimode fiber cable at a wavelength of 850nm. The Long-Range SFP covers up to 10km on OM4 multimode fiber cable. The 1310nm wavelength of the SFP can cover up to 10 kilometers on single-mode fiber. There is a Cisco SFP transceiver that covers up to 40 kilometers on single-mode fiber, with a wavelength ratio of 1310nm/1550nm. For 300 meters on OM1 multimmode fiber, the Short-Range 1 Gbit/sec SFP module works with 850nm laser for OM3 and OM4 fibers. Modifying the transceiver using an optical port adapter is one way to achieve the 1 Gbit/sec speed.

Cisco SFP transceivers have other models that work with other speeds. The Short-Range (SFP) can link 1.25 Gbps on OM2 multimode fiber for up to 300 meters. The Long-Range (SFP) links 1.25 Gbps over 10km of single-mode fiber at 1310nm. The 10GBASE-SR SFP can link up to 550m on OM3 multimode fiber at 850nm. The 10GBASE-LR SFP works on single-mode fiber for 10km at 1310nm. There is also a 10GBASE-ZR SFP that can work on 80km of single-mode fiber at 1550nm. Many more SFP transceivers work with speeds of 1Gbps, 2Gbps, 4Gbps, 8Gbps, and 16Gbps. Several fibers in a fiber optic cable may work with the 10GBASE-SR SFP to achieve 300 meters. By using the OM3 or OM4 multimode fiber, the 10GBASE-SR SFP will only work up to 100 meters when connected to a switch or router. The switch or router can be replaced with a compatiblt device to achieve the 300 meter distance with the 10GBASE-SR SFP.

Users can see that SFP modules can extend connections in a network far beyond what the Ethernet cable can provide. These versions of SFPs provide reliable connectivity for a company to build a network system depending on the lengths of fiber optic cable connecting devices.

Functions and features of the Cisco SFP 3750

The functions and features of Cisco SFP modules will vary according to the standard of the module.

• The General Purpose SFP can have multiple reach and can support both multimode and single mode fiber. The distance it can cover will depend on the optics it is using. For example, a module using MMF 62.5um can reach up to 550 meters while using SMF 9um can reach up to 10 kilometers or more depending on the SFP module version. It can support data rates of up to 4.25 Gbps (CWDM) wavelengths 1470 to 1610 nm@20nm spacing. It's working temperature ranges from 0 to 70 degrees C.)
• The CWDM (Coarse Wavelength Division Multiplexing) SFP can support a maximum of 8 wavelengths: 1470, 1490, 1510, 1530, 1550, 1570, 1590, and 1610 nm. It has a maximum insertion loss of 4.5 dB at 1530 to 1565 nm CWDM channel. Channel spacing is 20nm across channels at ± 0.5nm wavelength stability. The working temperature can range from -5 to 70 degrees C, or it can be customized.)
• The DWDM (Dense Wavelength Division Multiplexing) SFP can support a maximum of 32 wavelengths. The working temperature can be between -5 to 70 degrees C or custom made.)
• The BiDi SFP (Bidirectional SFP) can support a maximum link distance of 10 km on a single fiber. It documents a 1310 nm/1550 nm or 850nm/1310nm wavelength for long reach and short reach, respectively. This type of SFP can simplify network design and save costs.).
• The Extended Reach SFP can reach a maximum distance of 80 km or 100 km depending on the version.

In general, all Cisco SFP modules support digital diagnostic monitoring for real-time monitoring of transceiver parameters. They have a metal housing for better heat dissipation and have a low virus rate for better optical performance.

Usage scenarios of cisco 3750 sfp

Cisco SFP modules offer versatile connectivity solutions for expanding Cisco switch network infrastructure. These can be used to create satisfied usage scenarios for different industries, such as the ones below:

• Enterprise Network: Cisco SFP modules are widely used in enterprise networks to connect Cisco switches, routers, and other network devices. They provide flexible connectivity options to build a high-speed, reliable network infrastructure. SFP modules can connect to servers, storage systems, and workstations to create an efficient data center network. The 3750 series supports various SFP modules, allowing enterprises to customize their network. For example, the Cisco SFP-10G-SR can be used for 10GbE connections in the same data center or within the core distribution layer, which can help enhance bandwidth.
• Data Center: In modern data centers, Cisco SFP modules are used to establish high-speed connections between servers, switches, and storage devices. They play a critical role in building a scalable, low-latency network architecture. SFP modules can connect to virtualization hosts, hyperconverged infrastructure, and cloud services to support seamless data transfer and optimal performance. The SFP transceiver enables data centers to accommodate increasing bandwidth demands and ensure reliable connectivity for virtualized environments and cloud computing.
• Campus Network: Cisco SFP modules are deployed in campus networks to connect access switches, distribution switches, and backbone routers. They enable the establishment of a robust, high-performance network that supports voice, video, and data traffic. The modules can connect to desktop phones, IP cameras, and wireless access points to ensure seamless connectivity for unified communications and multimedia applications. Cisco SFP also provides the flexibility to adapt to changing bandwidth requirements in campus environments.
• Service Provider Network: In service provider networks, Cisco SFP modules are used to connect aggregation switches, edge routers, and access devices. They enable the establishment of a multi-gigabit network that supports service delivery to end users. The modules can connect to remote sites, network interconnections, and customer premises equipment to ensure reliable connectivity for broadband, virtualization, and cloud services. Cisco SFP modules also support various optical interfaces, allowing service providers to deploy solutions according to their specific requirements.

How to Choose cisco 3750 SFP

When selecting SFP transceivers for Cisco Catalyst 3750 Series switches, certain features and specifications need to be considered to ensure compatibility, performance, and functionality.

• Compatibility

  To ensure compatibility with the switch, verify that the supported SFP transceiver is on the compatibility list. Cisco provides a compatibility matrix for specific switch models to check the compatible SFPs.

• Connectivity Requirements

  Determine the connectivity requirements by considering the next physical locations of the devices to be connected, the types of interfaces needed, and the bandwidth. For copper connectivity, explore Gigabit Ethernet SFP options like the GLC-T, while for fiber connectivity, evaluate the reach and requirements for different optic models.

• Range and Reach

  The distance between the switch and the remote device determines the type of optic to be used. For distances less than 100 meters, use the GLC-T model; for multimode fiber connections up to 550 meters, the GLC-SX-MM model is suitable, while for long-range connections, the suitable SFP should be evaluated based on high table of contents.

• Supported Speeds

  Ensure the SFP's speed matches the interface speed on the switch port. For instance, a 1G SFP is suitable for connecting devices at gigabit speeds. Check the specifications of each SFP to know the supported speed.

• Optical Mode

  Consider whether the connection is happening over multimode or fiber optic cable. Cisco SFPs come in different optics, like GLC-FX-MMD for multimode and GLC-LH-SM for single-mode. Choose the one that matches the optical mode of the connection.

• Cisco GLC Compatible SFP Models

  Genuine Cisco SFPs can be quite costly, but the GLC-compatible model offers a cost-effective alternative without compromising quality and performance. These GLC-compatible SFPs are designed to work seamlessly with Cisco switches and routers. They undergo rigorous testing to ensure they meet the necessary specifications and standards for compatibility with Cisco networking equipment.

  In addition to being compatible with Cisco devices, the GLC-compatible SFPs also offer interoperability with other third-party networking equipment. This makes them a flexible and versatile option for businesses that have a mixed environment of networking components from different vendors. By choosing the GLC-compatible SFPs, organizations can save on costs while still getting reliable and high-performance transceivers.

Q & A

Q1: What happens if the Cisco SFP modules are incompatible?

A1: If an incompatible SFP is connected, the switch will likely fail to recognize the module and display an error;

thus, it will be rendered useless in the network equipment. Ensure compatibility with the vendor's hardware before purchasing.

Q2: Can Cisco switches be used with non-Cisco SFPs?

A2: It can be, but only under certain compatible conditions. Some vendors allow their hardware to work with non-Cisco SFP, but only with specific modules.

Q3: Are there any SFPs made for specific environments?

A3: Yes, specific SFPs are made for harsher environments like industrial environments. These usually have extended temperature ranges.

Q4: How can buyers ensure modules are genuine and not counterfeit?

A4: Purchasing from verified and trusted suppliers is the best way to ensure that the modules are genuine and not counterfeit.

Q5: What is the difference between SFP and SFP+?

A5: SFP modules support up to 1 Gbps, while SFP+ support 10 Gbps (10G Ethernet). The SFP+ modules are backward compatible with SFP ports.