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Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
78-17742-02
Chapter 1 General Troubleshooting
1.9.2 Faulty Fiber-Optic Connections
Figure 1-20 Cross-Over Cable Layout
Note Odd-numbered pins always connect to a white wire with a colored stripe.
1.9.2.2 Replace Faulty SFP or XFP Connectors
Small Form-factor Pluggables (SFPs) and 10-Gbps SFPs (called XFPs) are input/output devices that
plug into some transponder and muxponder cards to link the port with the fiber-optic network. The type
of SFP or XFP determines the maximum distance that traffic can travel from the card to the next network
device. For a description of SFPs and XFPs and their capabilities, refer to the Cisco ONS 15454 DWDM
Reference Manual. SFPs and XFPs are hot-swappable and can be installed or removed while the card or
shelf assembly is powered and running.
Warning
Class 1 laser product.
Statement 1008
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments.
Statement 272
Note SFPs and XFPs must be matched on both ends by type: SX to SX, LX to LX, or ZX to ZX.
Table 1-6 Cross-Over Cable Pinout
Pin Color Pair Name Pin
1 white/orange 2 Transmit Data + 3
2 orange 2 Transmit Data – 6
3 white/green 3 Receive Data + 1
4blue 1— 4
5 white/blue 1 — 5
6 green 3 Receive Data – 2
7 white/brown 4 — 7
8brown 4— 8
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