Crimp Replacement Lan Cables - Cisco ONS 15454 Troubleshooting Manual

Chapter 1 General Troubleshooting
LR cards transmit a higher output power than IR cards. When used with short runs of fiber, an LR
transmitter will be too powerful for the receiver on the receiving OC-N card.
Receiver overloads occur when maximum receiver power is exceeded.
Tip To prevent overloading the receiver, use an attenuator on the fiber between the ONS OC-N card
transmitter and the receiver. Place the attenuator on the receive transmitter of the ONS OC-N cards.
Refer to the attenuator documentation for specific instructions.
Most fiber has text printed on only one of the two fiber strands. Use this to identify which fiber is
Tip
connected to Tx and which fiber is connected to Rx.

1.10.2.1 Crimp Replacement LAN Cables

You can crimp your own LAN cables for use with the ONS 15454. Use a cross-over cable when
connecting an ONS 15454 to a hub, LAN modem, or switch, and use a LAN cable when connecting an
ONS 15454 to a router or workstation. Use CAT-5 cable RJ-45 T-568B, Color Code (100 Mbps), and a
crimping tool.
layout, and
Table 1-41
Figure 1-34 RJ-45 Pin Numbers
End view of RJ-45 plug
Figure 1-35 LAN Cable Layout
November 2004
Figure 1-34 shows the wiring of an RJ-45 connector.
Table 1-40 shows the cable pinouts.
shows the cross-over pinouts.
8 7 6 5 4 3 2 1
1
2
3
4
5
6
7
8
Figure 1-36 shows a cross-over cable layout, and
1 2 3 4 5 6 7 8
Looking into an RJ-45 jack
1
2
3
4
5
6
7
8
Cisco ONS 15454 Troubleshooting Guide, R4.6
1.10.2 Faulty Fiber-Optic Connections
Figure 1-35 shows a LAN cable
1-97