Gigabit Ethernet Interface - Cisco XR 12000 Series Installation Manual

Cabling and Specifications

Gigabit Ethernet Interface

This section describes the Gigabit Ethernet interface:
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GBIC Laser Optical Transceiver Modules
The Gigabit Interface Converters (GBICs) are field-replaceable modules that plug into receptacles on
the line card and provide the Gigabit Ethernet optical interface. The GBICs have two optical
interfaces—laser transmit (TX) and laser receive (RX)—and an electrical interface (to the line card). All
GBIC module types have dual SC connectors. Different GBICs can be ordered for each port on the line
card. The 1-Port Gigabit Ethernet and 3-Port Gigabit Ethernet line cards use GBICs to provide the
Gigabit Ethernet optical interface.
The following sections provide information on the GBIC and Coarse Wave Division Multiplexing
(CWDM) GBIC in Ethernet line cards:
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GBIC Modules
Fiber-optic transmission specifications identify two types of fiber: single-mode and multimode. Signals
can travel farther through single-mode fiber than through multimode fiber.
The 1-Port Gigabit Ethernet and 3-Port Gigabit Ethernet line cards support multimode fiber through the
WS-G5484= GBIC laser optical transceiver module and single-mode fiber through the WS-G5486=,
WS-G5487=. The 3-Port Gigabit Ethernet line card also supports CWDM-GBIC-xxxx= GBIC laser
optical transceiver modules.
Table 10
Table 10
GBIC Module/
Connector
WS-G5484=
SC connector
WS-G5486=
SC connector
Cisco XR 12000 Series Router Ethernet Line Card Installation
44
GBIC Laser Optical Transceiver Modules, page 44
Gigabit Ethernet SFP Modules, page 48
10-Gigabit Ethernet, page 50
GBIC Modules, page 44
Using CWDM GBICs with the 3-Port Gigabit Ethernet Line Card, page 46
General CWDM GBIC Installation and Usage Guidelines, page 47
Related CWDM Documentation, page 47
General Connection Rules for CWDM GBICs, page 47
describes the operating parameters for available GBIC laser optics.
Ethernet GBIC Laser Optic Parameters
Type
Shortwave (multimode shorthaul)
Defined by 1000BASE-SX
standard, IEEE 802.3
Longwave (single-mode longhaul)
Compliant with 1000BASE-LX
standard, IEEE 802.3
Wavelength Fiber Type
850 nm 62.5 micron MMF
50 micron MMF
1310 nm 10/9 micron SMF
1
Distance
902 feet (275 m)
1804 feet (550 m)
6.2 miles (10 km)
OL-7861-01