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Diagnostics
Backplane Health Check Diagnostic Results—Example 4. Example 4 shows a report for MSM-A
again, but with small numbers of missed packets on channels going to different slots.
In example 4, the small numbers of missed packets (fewer than five) indicate what is most likely not a
serious hardware problem. Either the CPU was too busy during that period and missed a round of
tests, or the hardware experienced an intermittent error. That the CPU is too busy to run the tests might
indicate other network problems that might be investigated if the situation persists.
Total Tx
Total Rv
Port
1:
6140
Port
2:
0
Port
3:
0
Port
4:
0
Port
5:
0
Port
6:
0
Port
7:
214020
Port
8:
214010
Port
9:
6140
Port 10:
0
Port 11:
0
Port 12:
0
Port 13:
0
Port 14:
0
Port 15:
214020
Port 16:
214010
Port 17:
6140
Port 18:
0
Port 19:
0
Port 20:
0
Port 21:
0
Port 22:
0
Port 23:
214020
Port 24:
214010
Port 25:
6140
Port 26:
0
Port 27:
0
Port 28:
0
Port 29:
0
Port 30:
0
Port 31:
214020
Port 32:
214010
Analyzing the Results
• In the output of the
show diagnostics
— Small counts of missed packets might mean nothing more than that the CPU was busy and a
packet was dropped; excessive numbers of missed packets indicate a systematic problem that
must be isolated and resolved.
— Corrupted packets might occur occasionally; excessive numbers of corrupted packets indicate a
systematic problem that must be isolated and resolved.
• Backplane health check failures might indicate a faulty transceiver or MAC device on one of the
MSMs or on an I/O module, but might also be the result of other problems.
78
Total miss
Error Pkt
6137
3
0
0
0
0
0
0
0
0
0
0
214018
2
214007
3
6137
3
0
0
0
0
0
0
0
0
0
0
214018
2
214007
3
6137
3
0
0
0
0
0
0
0
0
0
0
214018
2
214007
3
6137
3
0
0
0
0
0
0
0
0
0
0
214018
2
214007
3
command:
Diag fail
Last fail time
0
0
03/08/2005 05:28:51
0
0
0
0
0
0
0
0
0
0
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
0
0
0
0
0
0
0
0
0
0
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
0
0
0
0
0
0
0
0
0
0
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
0
0
0
0
0
0
0
0
0
0
0
0
03/08/2005 05:28:51
0
0
03/08/2005 05:28:51
Advanced System Diagnostics and Troubleshooting Guide
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Table of Contents
Troubleshooting
