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Cisco XR 12000 Series Router Ethernet Line Card Installation
OL-7861-01
Cabling and Specifications
Note 1000BASE-SX and 1000BASE-LX (LH) were originally part of the IEEE 802.3z standard, which has
been incorporated into the IEEE 802.3 standard.
Note Use only GBIC modules supplied by Cisco with your Ethernet line card. They have been tested by Cisco
Engineering and, in some cases, a Cisco-supplied GBIC might contain an internal erasable
programmable read-only memory (EPROM) that identifies the GBIC to the Cisco IOS software.
The maximum distance for any fiber span in an optical network is determined by the fiber type and
quality, as well as the span length, number of splices, and number of optical nodes in the path. If your
network design requires the signal to travel close to the theoretical maximum distance (as listed in
Table 11), you must calculate the optical power budget and receive (RX) sensitivity for the entire
network topology to ensure it is within the specifications of the GBIC option in use.
Note Actual power budget calculations involve a number of variables specific to network topology and design,
and are therefore outside the scope of this publication.
WS-G5487=
SC connector
Extended distance (single-mode) 1550 nm 10/9 micron SMF 43.5 miles (70 km)
8 micron SMF
2
62 miles (100 km)
CWDM-GBIC-x
xxx=
3
Longwave (single-mode) 1470-1610
nm
4
SMF 10/9 micron 62 miles (100 km)
1. These distances represent best case conditions, depending on fiber quality, dispersion, and losses due to connectors, nodes,
or splices. In the case of the CWDM GBICs, CWDM OADM modules or mux/demux modules are needed for these GBICs to
work in any topology other than a point-to-point topology within one building, so the maximum distance is determined by an
optical power budget calculation that takes into consideration all sources of loss, including the insertion loss due to the
CWDM OADM and mux/demux modules, and might be different from the distance shown in the table. For optical parameter
information associated with the CWDM OADM and mux/demux modules, see the “Related CWDM Documentation” section
on page 46.
2. Dispersion-shifted single-mode fiber-optic cable required for 100,000-meter distance.
3. Supported by 3-Port Gigabit Ethernet modules
4. The wavelengths of the CWDM GBICs are based on a 20-nanometer (nm) wavelength grid and are available in eight
wavelengths: 1470, 1490, 1510, 1530, 1550, 1570, 1590, and 1610 nm.
Table 10 Ethernet GBIC Laser Optic Parameters (continued)
GBIC Module/
Connector Type Wavelength Fiber Type Distance
1
Table 11 Optical Parameter Values for Calculating Link Power Budget
GBIC
Transmit
Power
Receive
Power
Receive
Sensitivity
Link
Budget Maximum Distance
1
1. These distances represent best case conditions, depending on fiber quality, dispersion, and losses due to connectors, nodes,
or splices.
WS-G5484= –9.5dBm to 0 dBm
2
–17 to 0 dBm –17 dBm 7.5 dB 1,804 feet (550 m)
WS-G5486= –11 to –3 dBm –19 to –3 dBm –19 dBm 8 dB 6.2 miles (10 km)
WS-G5487= 0 to +5 dBm –23 to 0 dBm –23 dBm 23 dB 43.5 to 62 miles (70 to
100 km
3
)
CWDM-GBIC-xxxx= +1 to +5 dBm –31 to –7 dBm –31 dBm 32 dB 62 miles (100 km)
4