Cisco Cisco Nexus 7000 4-Slot Switch Troubleshooting Guide
show system reset−reason module X
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show logging onboard internal reset−reason
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show module internal event−history module X
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show log
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If your version of Cisco NS−OX is earlier than Version 4.2, then upgrade to a new version in order
to ensure fixes for these software defects are integrated (minimize the possibility of parity errors):
to ensure fixes for these software defects are integrated (minimize the possibility of parity errors):
Cisco bug ID CSCso72230 L1 D−cache enabled 8541 CPU crashes with L1 D−cache parity
errors
errors
♦
Cisco bug ID CSCsr90831 − L1 D−cache enabled 8541 CPU crashes with L1 D−cache Push
parity errors
parity errors
♦
2.
If the errors repeatedly occur, reseat the card and monitor.
3.
If the errors are still repeating, replace the problem module.
4.
Additional Known Software Defect
Cisco bug ID CSCtb98876
Problem: N7K−M224XP−23L chico serdes sync loss Error
These errors appear on the module:
%MODULE−4−MOD_WARNING: Module # (Serial number: XXXX) reported warning
Ethernet#/# due to chico serdes sync loss in device DEV_SKYTRAIN
(device error 0xc9003600)
Root Cause
These errors indicate that there is a sync loss issue between module # and the Xbar/ASIC. In most cases the
cause is a hardware failure of the module.
cause is a hardware failure of the module.
If your version of Cisco NS−OX is earlier than 6.1(4) and the message does not appear continuously, it can be
affected by Cisco bug ID CSCud91672. The cause of the defect is that the NX−OS serdes settings are
different from diagnostic settings on the two channels between SKT <−−>SAC.
affected by Cisco bug ID CSCud91672. The cause of the defect is that the NX−OS serdes settings are
different from diagnostic settings on the two channels between SKT <−−>SAC.
Solution
Collect the output of these commands:
show version
•
show module
•
show run
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show module internal event−history module X
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show module internal activity module X
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show module internal exception−log module X
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show module internal event−history errors
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show logging last 200
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show logging nvram
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Upgrade the switch to NS−OX Version 6.1(4) or later in order to isolate the cause of the defect.
Perform this test in order to confirm if the card is faulty instead of the xbar or chassis slot:
Move the problem module to another free slot in the chassis.
1.
If you have a spare module, insert it in a problem slot.
2.