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Cisco 7401ASR Installation and Configuration Guide
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Chapter2 Rack-Mounting, Tabl et op Installation, and Cabling Connecting I/O Cables
Figure2-12 Attaching the Fast Ethernet/Ethernet Cables
Attach either one or two Fast Ethernet/Ethernet 10/100 cables to t he Fast E the rnet/ Ethe rn et port 0 or
port 1.
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
Attaching the GBIC Interface Cables
The GBIC ports support IEEE 8092.3z (optical Gigabit Etherne t) i nte rface s com pl ian t wi th
1000BASESX and 1000BASELX specifications.
After you install the GBIC in the Gigabit Ethernet port, you must attach the cables to the GBIC. The
instructions that follow apply to all supported platforms.
See Appendix A, “Specifications,” for more information on GBIC cabling and cabling specifications.
Note Optical fiber cables are commercially available; they are not available from CiscoSystems.

Attaching Multimode and Single-Mode Optical Fiber Cables

If you ordered a Gigabit Interface Converter (GBIC) with your Cisco 7401ASR router, it is one of thre e
types listed in Table 2 -4:
1Fast Ethernet/Ethernet port 0 (RJ-45
connector) 3Fast Ethernet cables
2Fast Etherne/Ethernett port 1 (RJ-45
connector)
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