Chapter4 Configuring the Gigabit Ethernet Ports
Installing, Removing, and Maintaining GBICs
4-4
Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide
78-6286-05
Note Because of interoperability issues, Cisco does not support GBICs purchased from
third-party vendors.
Port Cabling Specifications
Table 4 -2 provides cabling specifications for the GBICs. The minimum ca ble
distance for all GBICs listed (MMF [multimode fiber] and SMF) is 6. 5 f eet ( 2
meters).
Note For information about the Coarse Wave Division Multip lexing (CWDM), refer to
the Cisco CWDM GBIC and CWDM SFP Installation Note.
Table4-2 GBIC Port Cabling Specifications
GBIC Wavelength1 (nm)
1. Nominal fiber specification wavelength.
Fiber Type Core Size
(microns) Modal Bandwidth
(MHz/km) Maximum Cable
Distance
SX2
2. MMF only.
850 MMF 62.5 160 722 ft (220 m)
62.5 200 902 ft (275 m)
50.0 400 1640 ft (500 m)
50.0 500 1804 ft (550 m)
LX/LH 1300 MMF3
3. Patch cord required (refer to the “Patch Cord” section on page4-10 for details).
62.5 500 1804 ft (550 m)
50.0 400 1804 ft (550 m)
50.0 500 1804 ft (550 m)
SMF 9/10 – 6.2 mi (10 km)
ZX 1550 SMF 9/10 – 43.5 mi (70 km)
SMF4
4. Dispersion-shifted single-mode fiber-optic.
– – 62.1 mi (100 km)