Cisco 1000BASE-LX/LH long haul GBIC (SM/MM) WS-G5486= Datenbogen

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The Cisco 1000BASE-LX/LH GBIC (WS-G5486) fully complies with the IEEE 802.3z 1000BASE-LX standard.

However, its higher optical quality allows it to reach 6.2 miles (10 kilometers) over single-mode fiber (SMF),

compared with the 3.1 miles (5 km) specified in the standard.

The Cisco 1000BASE-ZX GBIC (WS-G5487) operates on ordinary single-mode fiber optic link spans up to 43.4

miles (70 km) long. Link spans of up to 62 miles (100 km) are possible using premium single-mode fiber or dispersion

shifted single-mode fiber. The GBIC provides an optical link budget of 23 dB—the precise link span length will

depend on multiple factors such as fiber quality, number of splices, and connectors.

When shorter distances of single-mode fiber are used, it might be necessary to insert an in-line optical attenuator in

the link to avoid overloading the receiver:

• A 5-dB or 10-dB inline optical attenuator should be inserted between the fiber-optic cable plant and the receiving

port on the Cisco 1000BASE-ZX GBIC at each end of the link whenever the fiber-optic cable span is less than

15.5 miles (25 km).

This section covers the Cisco 1000BASE-SX GBIC, Cisco 1000BASE-LX/LH GBIC, and the Cisco 1000BASE-ZX

GBIC, unless otherwise specified. Technical specifications for the Cisco 1000BASE-T GBIC can be found in a separate

document, Cisco 1000BASE-T Gigabit Interface Converter Data Sheet.

Cisco GBICs are supported across a variety Cisco switches, routers, and optical transport devices. For more details,

see the document GBIC Compatibility Matrix.

Connectors: Dual SC connector

Table 1 provides cabling specifications for the Cisco GBICs that you install in the Gigabit Ethernet port. Note that

all Cisco GBICs have SC-type connectors, and the minimum cable distance for all GBICs listed (multimode fiber

[MMF] and single-mode fiber [SMF]) is 6.5 feet (2 m).