H3C SR6600 Series, Troubleshooting Manual, Page: 2 / 39

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Introduction ···································································································· 1
General guidelines ············································································································································· 1
Collecting log and operating information ············································································································ 1
Collecting common log messages ············································································································· 2
Collecting diagnostic log messages ··········································································································· 3
Collecting operating statistics····················································································································· 3
Contacting technical support ······························································································································ 5
Troubleshooting CPOS interfaces ·································································· 6
CPOS interface and serial interface down ········································································································· 6
Symptom ···················································································································································· 6
Solution ······················································································································································ 6
Data link layer protocol flapping or traffic forwarding failure on serial interface ················································· 7
Symptom ···················································································································································· 7
Solution ······················································································································································ 7
Related commands ············································································································································ 7
Troubleshooting FIP-600 modules ································································· 9
Failure to ping a directly connected device ········································································································ 9
Symptom ···················································································································································· 9
Solution ······················································································································································ 9
Failure to forward traffic ··································································································································· 10
Symptom ·················································································································································· 10
Solution ···················································································································································· 10
Packet loss ······················································································································································· 11
Symptom ·················································································································································· 11
Solution ···················································································································································· 11
Related commands ·········································································································································· 11
Troubleshooting POS interfaces ·································································· 13
Interface physically down ································································································································· 13
Symptom ·················································································································································· 13
Solution ···················································································································································· 13
Data link layer down ········································································································································· 13
Symptom ·················································································································································· 13
Solution ···················································································································································· 13
Related commands ·········································································································································· 14
Troubleshooting SAP modules ···································································· 15
Failure of an interface to come up···················································································································· 15
Symptom ·················································································································································· 15
Solution ···················································································································································· 15
Failure to forward traffic ··································································································································· 15
Symptom ·················································································································································· 15
Solution ···················································································································································· 15
Packet loss in data forwarding ························································································································· 16
Symptom ·················································································································································· 16
Solution ···················································································································································· 16
Related commands ·········································································································································· 16
Troubleshooting WAN-IRF ··········································································· 17
IRF fabric setup failure ····································································································································· 17
Symptom ·················································································································································· 17
Solution ···················································································································································· 17
Cross-chassis traffic forwarding failure ············································································································ 18
Symptom ·················································································································································· 18
Solution ···················································································································································· 18