The Cisco 1000BASE-T Gigabit Interface Converter (GBIC) is an ideal solution for Catalyst ® 6500, 4000, 3550, 2950, 3500 XL and 2900 XL Series switch customers, providing full duplex Gigabit Ethernet connectivity to high-end workstations and between wiring closets over existing copper network infrastructures. This GBIC technology leverages the industry’s flexible, standards-based 1000BASE-X design, allowing for a simple and low-cost migration path to Gigabit Ethernet. There are two key product applications for the Cisco 1000BASE-T GBIC: connectivity to high-end workstations and distribution and wiring closet interconnectivity
Cisco 1000BASE-T GBIC
The Cisco 1000BASE-T GBIC (product number WS-G5483) connects a GBIC port to Category 5 wiring using a standard RJ-45 interface. The maximum Category 5 wiring distance is 328 feet (100 meters).
Cisco 1000BASE-SX GBIC
The Cisco 1000BASE-SX GBIC (WS-G5484) operates on legacy multimode fiber (MMF) optic link spans up to 1815 feet (550 m) and on laser-optimized multimode fiber (OM3) optic link spans up to 3281 feet (1 km).
Cisco 1000BASE-LX/LH GBIC
The Cisco 1000BASE-LX/LH GBIC (WS-G5486) fully complies with the IEEE 802.3z 1000BASE-LX10 standard. It allows for reaches up to 6.2 miles (10 km) over single-mode fiber (SMF) and up to 550 meters over multimode fiber (MMF). Note the requirements for mode conditioning patch (MCP) cords when coupled over legacy MMF:.
Also note Cisco may support links up to 2 kilometers over legacy MMF in some deployment cases: .
Cisco 1000BASE-ZX GBIC
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 21 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)
Cisco GBICs are supported across a variety Cisco switches, routers, and optical transport devices. .
Connectors and Cabling • Dual SC/PC connector (for optical GBIC modules)
• RJ-45 connector (for 1000BASE-T GBIC)