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  • 1000BASE-LX/LH Type
  • For Gigabit Ethernet Applications
  • 1310nm Wavelength
  • Hot-Swappable
  • Digital Optical Monitoring (DOM) Support

The industry-standard Cisco® Small Form-Factor Pluggable (SFP) Gigabit Interface Converter (Figure 1) links your switches and routers to the network. The hot-swappable input/output device plugs into a Gigabit Ethernet port or slot. Optical and copper models can be used on a wide variety of Cisco products and intermixed in combinations of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-EX, 1000BASE-ZX, or 1000BASE-BX10-D/U on a port-by-port basis.

Figure 1. Cisco Optical Gigabit Ethernet SFP

Figure 2. Cisco 1000BASE-T Copper SFP

Figure 3. Cisco 2-Channel 1000BASE-BX Optical SFP

Features and Benefits

● Hot swappable to maximize uptime and simplify serviceability
● Flexibility of media and interface choice on a port-by-port basis, so you can “pay as you populate”
● Robust design for enhanced reliability
● Supports digital optical monitoring (DOM) capability
1000BASE-T SFP for Copper Networks

The 1000BASE-T SFP operates on standard Category 5 unshielded twisted-pair copper cabling of link lengths up to 100 m (328 ft). Cisco 1000BASE-T SFP modules support 10/100/1000 auto negotiation and Auto MDI/MDIX.

1000BASE-SX SFP for Multimode Fiber Only

The 1000BASE-SX SFP, compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. It can support up to 1km over laser-optimized 50 μm multimode fiber cable.

1000BASE-LX/LH SFP for Both Multimode and Single-Mode Fibers

The 1000BASE-LX/LH SFP, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. For details on this implementation, refer to Here

1000BASE-EX SFP for Long-Reach Single-Mode Fibers

The 1000BASE-EX SFP operates on standard single-mode fiber-optic link spans of up to 40 km in length. A 5-dB inline optical attenuator should be inserted between the fiber-optic cable and the receiving port on the SFP at each end of the link for back-to-back connectivity.

1000BASE-ZX SFP for Long-Reach Single-Mode Fibers

The 1000BASE-ZX SFP operates on standard single-mode fiber-optic link spans of up to approximately 70 km in length. The SFP provides an optical link budget of 21 dB, but the precise link span length depends on multiple factors such as fiber quality, number of splices, and connectors.

When shorter distances of single-mode fiber (SMF) are used, it might be necessary to insert an inline optical attenuator in the link to avoid overloading the receiver. A 10-dB inline optical attenuator should be inserted between the fiber-optic cable plant and the receiving port on the SFP at each end of the link whenever the fiber-optic cable span loss is less than 8 dB.

1000BASE-BX10-D and 1000BASE-BX10-U SFP for Single-Fiber Bidirectional Applications

The 1000BASE-BX-D and 1000BASE-BX-U SFPs, compatible with the IEEE 802.3ah 1000BASE-BX10-D and 1000BASE-BX10-U standards, operate on a single strand of standard SMF.

A 1000BASE-BX10-D device is always connected to a 1000BASE-BX10-U device with a single strand of standard SMF with an operating transmission range up to 10 km.

The communication over a single strand of fiber is achieved by separating the transmission wavelength of the two devices as depicted in Figure 2: 1000BASE-BX10-D transmits a 1490-nm channel and receives a 1310-nm signal, whereas 1000BASE-BX10-U transmits at a 1310-nm wavelength and receives a 1490-nm signal. As shown, the presence of a wavelength-division multiplexing (WDM) splitter integrated into the SFP to split the 1310-nm and 1490-nm light paths.

Figure 4. Bidirectional Transmission of a Single Strand of SMF

The GLC-BX-D and GLC-BX-U SFPs also support digital optical monitoring (DOM) functions according to the industry-standard SFF-8472 multisource agreement (MSA). This feature gives the end user the ability to monitor real-time parameters of the SFP, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage.

2-Channel 1000BASE-BX10-D for Single-Fiber Bidirectional Applications
The 2-channel 1000BASE-BX-D SFP module, also known as Compact SFP, integrates two IEEE 802.3ah 1000BASE-BX10-D interfaces in one SFP module. The GLC-2BX-D or GLC-2BX-D-I is always connected to two 1000BASE-BX10-U interfaces over two single strands of standard SMF with an operating transmission range up to 10km.

GLC-2BX-D or GLC-2BX-D-I is designed to connect to any standard-based Customer Premises Equipment (CPE) in FTTx links (Figure 3).

Figure 5. Compact SFP Deployment with Cisco Catalyst 4500

Platform Support

The Cisco 1-Gbps SFPs are supported across a variety of Cisco networking equipment*. For more details, refer to the document SFP Compatibility Matrix at Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix

●  ASA5500 Series Appliances
●  ASR 901 and 903 Series Routers
●  ASR 1000, 9000, and 9000v Series Routers
●  Catalyst Express 500 and Express 520
●  Catalyst 2350 and 2360 Series
●  Catalyst 2900, 2940, 2950, 2960, 2960-Plus, 2960-C, 2960-S, 2960-SF, 2960-X Series
●  Catalyst 2970 and 2975 Series
●  Catalyst 3000 and 3100 Blade Switches
●  Catalyst 3500XL Series
●  Catalyst 3550, 3560, 3560-C, 3560-E, 3560-X Series
●  Catalyst 3750-E Series, 3750 Metro, 3750-X Series
●  Catalyst 3850 Series
●  Catalyst 4500 and 4500-X Series
●  Catalyst 4900 Series
●  Catalyst 6000 Series
●  Catalyst 6800 Series
●  Cisco 1941 Series Router
●  Cisco 2600, 2800, 2900 Series Router
●  Cisco 3200, 3600, 3700 Series Router
●  Cisco 4400 Series Router
●  Cisco 5700 Series Wireless LAN Controller
●  Cisco 6400 Universal Access Router
●  Cisco uBR7200 Series
●  Cisco 7200, 7300, 7500, and 7600 Series Routers
●  Cisco 10000 and uBR 10000 Series Routers
●  Cisco 10700 Series Internet Router
●  Cisco 12000 Series Router
●  Cisco 2000 Connected Grid Router Series
●  Cisco 2500 Connected Grid Switch Series
●  Cisco IE2000 and IE2000U Series
●  Cisco IE3010 Series
●  Cisco MDS 9000
●  Cisco ME 2400
●  Cisco ME 2600X
●  Cisco ME 3400
●  Cisco ME 3600X and ME 3800X
●  Cisco ME 4600 and ME 4900 Series
●  Cisco ME 6500 Series
●  Cisco MWR 2941 Mobile Wireless Router
●  CRS Router Series
●  CSS 11500 Series
●  Cisco RF Gateway Series
●  NAM 2200 Series Appliances
●  Nexus 2000, 3000, 4000, 5000, 7000, 9000, 9300, 9500 (modular) Series

Networking SFP
Device Type Transceiver
Standards IEEE 802.3z
Wavelength 1310nm
Ports 1 x Ethernet 1000Base-LX / 1000Base-LH - LC/PC single-mode x 2
Max Distance 6.2 miles
Transfer Rate 1 Gbps
Features Designed For Cisco 2, 24, 38XX, 39XX, 39XX ES24, 4451, 48, 8, 892; ASR 901, 901 10; Catalyst 29XX, 3560, 3650, 3750, 4500, 6900; Ethernet Services Plus Transport 20, 40; Industrial Ethernet 2000; Line Card E-Series; ME 3600, 3600X 24, 3800; Nexus 30XX, 7000, 7000 48; Supervisor Engine 7L, 8; UCS 2208, 62XX
Dimensions & Weight
Dimensions 0.30" x 0.50" x 2.20"
Weight 0.17 lb.
Networking SFP