Fiber And Cabling; Bit Errors Appear For A Traffic Card - Cisco ONS 15454 Troubleshooting Manual

1.10 Fiber and Cabling

Table 1-37 Blinking STAT LED on Installed Card
Possible Problem
The card cannot boot
because it failed the
Power On Shelf Test
(POST) diagnostics.
1.10 Fiber and Cabling
This section explains problems typically caused by cabling connectivity errors. It also includes
instructions for crimping CAT-5 cable and lists the optical fiber connectivity levels.

1.10.1 Bit Errors Appear for a Traffic Card

Symptom
Table 1-38
Table 1-38 Bit Errors Appear for a Line Card
Possible Problem
Faulty cabling or low
optical-line levels.
Cisco ONS 15454 Troubleshooting Guide, R4.6
1-94
Solution
The blinking STAT LED indicates that POST diagnostics are being
performed. If the LED continues to blink more than 60 seconds, the card has
failed the POST diagnostics test and has failed to boot.
If the card has truly failed, an
with an "Equipment Failure" description. Check the alarm tab for this alarm
to appear for the slot where the card was installed.
To attempt recovery, remove and reinstall the card and observe the card boot
process. If the card fails to boot, replace the card. Complete the
Replace a Card" procedure on page
Caution
A traffic card has multiple bit errors.
describes the possible problem and the solution.
Solution
Bit errors on line (traffic) cards usually originate from cabling problems or
low optical-line levels. The errors can be caused by synchronization
problems, especially if PJ (pointer justification) errors are reported. Moving
cards into different error-free slots will isolate the cause. Use a test set
whenever possible because the cause of the errors could be external cabling,
fiber, or external equipment connecting to the ONS 15454. Troubleshoot
cabling problems using the
page 1-2. Troubleshoot low optical levels using the
Fiber-Optic Connections" section on page
"EQPT" alarm
2-219.
Removing a card that currently carries traffic on one or more ports
can cause a traffic hit. To avoid this, perform an external switch if
a switch has not already occurred. Consult the Cisco ONS 15454
Procedure Guide for information.
"1.1 Network Troubleshooting Tests" section on
Chapter 1 General Troubleshooting
is raised against the slot number
"Physically
"1.10.2 Faulty
1-95.
November 2004