Cisco 2948G Hardware Installation Guide - Page 78

Port Cabling Specifications

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Installing, Removing, and Maintaining GBICs Chapter 4 Configuring the Gigabit Ethernet Ports 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 cable distance for all GBICs listed (MMF [multimode fiber] and SMF) is 6.5 feet (2 meters). Note For information about the Coarse Wave Division Multiplexing (CWDM), refer to the Cisco CWDM GBIC and CWDM SFP Installation Note. Table 4-2 GBIC Port Cabling Specifications GBIC SX2 Wavelength1 (nm) Fiber Type 850 MMF Core Size (microns) 62.5 Modal Bandwidth Maximum Cable (MHz/km) Distance 160 722 ft (220 m) 62.5 200 902 ft (275 m) 50.0 400 1640 ft (500 m) LX/LH 1300 50.0 500 MMF3 62.5 500 1804 ft (550 m) 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 - SMF4 - - 43.5 mi (70 km) 62.1 mi (100 km) 1. Nominal fiber specification wavelength. 2. MMF only. 3. Patch cord required (refer to the "Patch Cord" section on page 4-10 for details). 4. Dispersion-shifted single-mode fiber-optic. Catalyst 2984G, 2948G-GE-TX, and 2980G Switch Hardware Installation Guide 4-4 78-6286-05

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Chapter 4
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 cable
distance for all GBICs listed (MMF [multimode fiber] and SMF) is 6.5 feet (2
meters).
Note
For information about the Coarse Wave Division Multiplexing (CWDM), refer to
the
Cisco CWDM GBIC and CWDM SFP Installation Note
.
Table 4-2
GBIC Port Cabling Specifications
GBIC
Wavelength
1
(nm)
1.
Nominal fiber specification wavelength.
Fiber Type
Core Size
(microns)
Modal Bandwidth
(MHz/km)
Maximum Cable
Distance
SX
2
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
MMF
3
3.
Patch cord required (refer to the
“Patch Cord” section on page 4-10
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)
SMF
4
4.
Dispersion-shifted single-mode fiber-optic.
–
–
62.1 mi (100 km)