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A-4
Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0
Appendix A Specifications
Gigabit Ethernet GBIC Configurations and Port and Cabling Specifications
Gigabit Ethernet GBIC Configurations and Port and Cabling
Specifications
The Gigabit Interface Converter (GBIC) port is a 1000-Mbps optical interface in the form of an SC-type
duplex port that supports IEEE 802.3z interfaces compliant with the 1000BASEX standard.
Note The GBIC is a separately orderable part and does not ship installed in your Cisco 7401ASR router. You
must install the GBIC before you connect the cables to it.
Note Optical fiber cables are commercially available; they are not available from Cisco Systems.
GBIC Cabling and Connection Equipment
Table A-7 provides cabling specifications for the GBICs that you install in Gigabit Ethernet ports. Note
that all GBIC ports have SC-type connectors. Also, the minimum cable distance for the WS-G5484=
or GBIC-SX and GBIC-LX/LH or WS-G5486 (multimode fiber [MMF] and single-mode fiber [SMF]) is
6.5 feet (2 m), and the minimum link distance for the GBIC-ZX or WS-G5487 is 6.2 miles (10 km) with
an 8-dB attenuator installed at each end of the link. Without attenuators, the minimum link distance for
the GBIC-ZX or WS-G5487 is 24.9 miles (40 km).
Table A-6 GBIC Transmit Power, Receive Power, and Power Budget
GBIC
Transmit Power
Minimum Maximum
Receive Power
Minimum Maximum Power Budget
GBIC-SX= or
WS-G5484=
–9.5 dBm
1
1. For fiber types 50/125 µm, NA = 0.20 fiber and 62.5/125 µm, NA = 0.275 fiber.
–4 dBm
1
–17 dBm 0 dBm 7.5 dBm
2
2. For fiber types 50 µm MMF and 62.5 µm MMF.
GBIC-LX/LH=
or WS-G5486=
–9.5 dBm
3
–11.5 dBm
4
3. For fiber types 9/125 µm SMF.
4. For fiber types 62.5/125 µm MMF and 50/125 µm MMF.
–3 dBm
5
5. For fiber types 9/125 µm SMF, 62.5/125 µm MMF, and 50/125 µm MMF.
–20 dBm –3 dBm 7.5 dBm
6
and 8.0 dBm
7
6. For fiber types 50 µm MMF and 62.5 µm MMF.
7. For fiber type 10 µm SMF.
GBIC-ZX= or
WS-G5487=
0 dBm 5.2 dBm –24 dBm –3 dBm –24 dBm