Faulty Fiber-Optic Connections; Verify Fiber-Optic Connections - Cisco ONS 15310-CL Troubleshooting Manual

Chapter 1 General Troubleshooting

1.11.2 Faulty Fiber-Optic Connections

Symptom
Table 1-31
Table 1-31
Possible Problem
Faulty fiber-optic
connections.
Faulty CAT-5 cables.
Warning Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not view directly with optical instruments. Viewing the laser output with certain optical instruments
(for example, eye loupes, magnifiers, and microscopes) within a distance of 100 mm may pose an eye
hazard. Statement 1056
Warning Class 1 laser product. Statement 1008
Laser radiation presents an invisible hazard, so personnel should avoid exposure to the laser beam.
Warning
Personnel must be qualified in laser safety procedures and must use proper eye protection before
working on this equipment. Statement 300

Verify Fiber-Optic Connections

Ensure that a single-mode fiber connects to the ONS 15310-CL or ONS 15310-MA Small form-factor
Step 1
Pluggable (SFP).
SM or SM Fiber should be printed on the fiber span cable. ONS 15310-CL and ONS 15310-MA ports
do not use multimode fiber.
Ensure that the connector keys on the SC fiber connector are properly aligned and locked.
Step 2
Check that the single-mode fiber power level is within the specified range:
Step 3
a.
b.
c.
d.
78-17235-01
A line card has multiple SONET alarms and/or signal errors.
describes the potential causes of the symptom and the solutions.
Faulty Fiber-Optic Connections
Solution
Faulty fiber-optic connections can be the source of SONET alarms and
signal errors. See the
page
Faulty CAT-5 cables can be the source of SONET alarms and signal errors.
See the
page
Remove the Rx end of the suspect fiber.
Connect the receive end of the suspect fiber to a fiber-optic power meter, such as a
GN Nettest LP-5000.
Determine the power level of fiber with the fiber-optic power meter.
Verify that the power meter is set to the appropriate wavelength for the optical port being tested
(either 1310 nm or 1550 nm).
"Verify Fiber-Optic Connections" procedure on
1-67.
"1.11.2.1 Crimp Replacement LAN Cables" procedure on
1-68.
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
1.11.2 Faulty Fiber-Optic Connections
1-67