Installation guide

4-2
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 4 Troubleshooting the IGX
Troubleshooting an IGX Node
Channel loopback and connection tests.
Alarm thresholds for statistical line errors, and line error display reporting.
External test equipment, such as a bit error rate tester (BERT).
General Troubleshooting Procedures
The IGX node regularly runs self-tests to ensure proper function. When the node finds an error condition
that affects operation, it deactivates the affected card or line then selects a standby card or redundant line
if one is available.
Caution A FAIL LED that comes on on a card indicates that an error occurred. Try resetting the light with the
resetcd f command. If the FAIL LED comes on again, use the table below to find the cause or call the
Cisco TAC to obtain information on isolating the problem and possibly replacing a component. For
information on contacting the Cisco TAC, see the Obtaining Technical Assistance section on
page xxiii.
Symptom Probable Cause Solution
No indicators on IGX boards
onconsole screen blank. LEDS
on power supplies not on.
IGX circuit breakers off.
1. Switch on power switch.
2. Switch off, then switch on the power switch to
reset the breaker. Check to see if any overload
condition exists (shorted connections,
crow-barred power supplies).
IGX power cord dislodged from
plug.
Reconnect power cord to AC receptacle.
Power supplies not functioning. Replace power supplies.
Front card FAIL LED on. Front card experienced an error:
NPM card
UXM-E card
NTM card
UFM card
FRM card
UVM card
CVM card
HDM card
LDM card
ARM card
Indicates that an error occurred. First, reset the
card with the resetcd f command. If the LED
comes on again, call the Cisco TAC. For more
information, refer to the Obtaining Technical
Assistance section on page xxiii.
Note If an NPM fails in a nonredundant
IGX system, reboot the system.
Front card indicator
onreplacement card does not fix
problem.
Defective backplane is possible. If a new card does not fix the problem, the
backplane might be suspect (very uncommon
failure). Contact the Cisco TAC. For more
information, refer to the Obtaining Technical
Assistance section on page xxiii.