GLC-LH-SMD Cisco SFP Module

The industry-standard Cisco Small Form-Factor Pluggable (SFP) Gigabit Interface Converter 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.

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.

GLC-LH-SMD Overview

Cisco GLC-LH-SMD 1000BASE-LX/LH SFP is made 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. 1300-nm wavelength, extended operating temperature range and DOM support, dual LC/PC connector.

This Figure shows the appearance of GLC-LH-SMD.

 

The table provides cabling specifications for the SFPs that you install in the Gigabit Ethernet port.

Note that all SFP ports have LC-type connectors, and the minimum cable distance for all SFPs listed (multimode and single-mode fiber) is 6.5 feet (2 m).

SFP Port Cabling Specifications

Product	Wavelength (nm)	Fiber Type	Core Size (μm)	Modal Bandwidth (MHz* Km)***	Operating Distance (m)
1000BASE-SX (GLC-SX-MMD)	850	MMF	62.5	160 (FDDI-grade)	220 (722 ft)
			62.5	200 (OM1)	275 (902 ft)
			50	400 (400/400)	500 (1,640 ft)
			50	500 (OM2)	550 (1,804 ft)
			50	2000 (OM3)	1000 (3281 ft)
1000BASE-LX/LH (GLC-LH-SMD)	1310	MMF*	62.5	500	550 (1,804 ft)
			50	400	550 (1,804 ft)
			50	500	550 (1,804 ft)
		SMF	-**	–	10,000 (32,821 ft)
1000BASE-EX	1310	SMF	-**	–	40,000 (131,234 ft)
1000BASE-ZX (GLC-ZX-SM) (GLC-ZX-SMD)	1550	SMF	–	–	Approximately 70 km depending on link loss
1000BASE-BX-U	1310	SMF	-**	–	10,000 (32,821 ft)
1000BASE-BX-D	1490	SMF	-**	–	10,000 (32,821 ft)

^*A mode-conditioning patch cord, as specified by the IEEE standard, is required regardless of the span length. Note how the mode conditioning patch cord for 62.5-μm fibers has a different specification from the mode-conditioning patch cord for 50-μm fibers.

^**ITU-T G.652 SMF as specified by the IEEE 802.3z standard.

^***Specified at transmission wavelength.

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GLC-LH-SMD Specification

SFP Port Cabling Specifications
Product	Wavelength (nm)	Fiber Type	Core Size (μm)	Modal Bandwidth (MHz* Km)***	Operating Distance (m)
1000BASE-SX	850	MMF	62.5	160 (FDDI-grade)	220 (722 ft)
			62.5	200 (OM1)	275 (902 ft)
			50	400 (400/400)	500 (1,640 ft)
			50	500 (OM2)	550 (1,804 ft)
			50	2000 (OM3)	1000 (3281 ft)
1000BASE-LX/LH	1310	MMF*	62.5	500	550 (1,804 ft)
			50	400	550 (1,804 ft)
			50	500	550 (1,804 ft)
		SMF	-**	–	10,000 (32,821 ft)
1000BASE-EX	1310	SMF	-**	–	40,000 (131,234 ft)
1000BASE-ZX (GLC-ZX-SMD)	1550	SMF	–	–	Approximately 70 km depending on link loss
1000BASE-BX-U	1310	SMF	-**	–	10,000 (32,821 ft)
1000BASE-BX-D	1490	SMF	-**	–	10,000 (32,821 ft)

Note:

*A mode-conditioning patch cord, as specified by the IEEE standard, is required regardless of the span length. Note how the mode conditioning patch cord for 62.5-μm fibers has a different specification from the mode-conditioning patch cord for 50-μm fibers.

**ITU-T G.652 SMF as specified by the IEEE 802.3z standard.

***Specified at transmission wavelength.

Cisco SFP Modules for Gigabit Ethernet Applications Data Sheet

Cisco SFP Module 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

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

Cisco Platforms support

Cisco Platforms

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

 

Cisco 1000base SFP Modules Ordering information

Table 5.Ordering information

Product Number	Product Description
GLC-T	1000BASE-T standard
GLC-TE	1000BASE-T standard
GLC-T-RGD	1000BASE-T standard
SFP-GE-T	1000BASE-T NEBS 3 ESD
GLC-SX-MMD	1000BASE-SX short wavelength; with DOM
GLC-SX-MM-RGD	1000BASE-SX short wavelength; rugged
GLC-LH-SMD	1000BASE-LX/LH long-wavelength; with DOM
GLC-LX-SM-RGD	1000BASE-LX/LH long wavelength; rugged
GLC-EX-SMD	1000BASE-EX long-wavelength; with DOM
GLC-ZX-SMD	1000BASE-ZX extended distance; with DOM
GLC-ZX-SM-RGD	1000BASE-ZX extended distance; rugged
GLC-GE-DR-LX	100/1000BASE-LX long-wavelength; with DOM
GLC-BX-D	1000BASE-BX10-D downstream bidirectional single fiber; with DOM
GLC-BX-U	1000BASE-BX10-U upstream bidirectional single fiber; with DOM
GLC-BX-D-I	1000BASE-BX10-D downstream bidirectional single fiber, (IND) rated, with DOM
GLC-BX-U-I	1000BASE-BX10-U upstream bidirectional single fiber, (IND) rated, with DOM
GLC-2BX-D	2-channel 1000BASE-BX10-D downstream bidirectional single fiber; with DOM
GLC-2BX-D-I	2-channel 1000BASE-BX10-D downstream bidirectional single fiber; with DOM
GLC-BX40-D-I	1000BASE-BX40-D for 40km Single-Fiber Bidirectional Applications; with DOM
GLC-BX40-DA-I	1000BASE-BX40-D (Alternative) for 40km Single-Fiber Bidirectional Applications; with DOM
GLC-BX40-U-I	1000BASE-BX40-U for 40km Single-Fiber Bidirectional Applications; with DOM
GLC-BX80-D-I	1000BASE-BX80-D for 80km Single-Fiber Bidirectional Applications; with DOM
GLC-BX80-U-I	1000BASE-BX80-U for 80km Single-Fiber Bidirectional Applications; with DOM
SFP-1G-LH	1000BASE-LX/LH long wavelength module for 10GE ports
SFP-1G-SX	1000BASE-SX short wavelength module for 10GE ports

What platforms does it support?

Almost all Cisco platforms which have SFP ports can use this SFP Module

What is the difference between LH and LX modules?

The 1000BASE-LX, 1000BASE-LH and 1000BASE-LX/LH all refer to Gigabit Ethernet transmission. Among them, the 1000BASE-LX is a standard specified in IEEE 802.3 Clause 38 which uses a long wavelength laser, while the 1000BASE-LH and 1000BASE-LX/LH are just terms widely used by many vendors. Long Haul (LH) denotes longer distances while Long Wavelength (LX) denotes less energy which is obviously shorter distance. The 1000BASE-LX SFP modules compatible with the IEEE 802.3z 1000BASE-LX standard can achieve a distance up to 10km over single mode fiber. Unlike 1000BASE-LX SFP modules, 1000BASE-LH SFP modules operate at a distance up to 70km over single mode fiber.

Can 1000BASE-LX be compatible with 100BASE-LX?

1000BASE-LX and 100BASE-LX are very different standards. 1000BASE-LX SFP (GLC-LH-SMD) and 100BASE-LX SFP (GLC-FE-100LX) are two module types, one for GE and one for FE slots. The GLC-LH-SMD does not operate at 100Mbps. You will need to use a 100Mb module to connect to another device at 100Mb. Check optical transceiver compatibility with your equipment by reviewing the Cisco Fast Ethernet SFP module compatibility document and choose the one it says is compatible.

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