HP 5920 Series Troubleshooting Guide

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Contents
Introduction ··································································································································································· 1
General guidelines ···························································································································································· 1
Collecting log and operating information ······················································································································ 1
Collecting common log messages ·························································································································· 2
Collecting diagnostic log messages ······················································································································· 2
Collecting operating statistics ································································································································· 3
Contacting technical support ··········································································································································· 4
Troubleshooting hardware ·········································································································································· 4
Unexpected switch reboot ················································································································································ 4
Symptom ···································································································································································· 4
Troubleshooting flowchart ······································································································································· 5
Solution ······································································································································································ 5
Operating power supply failure ······································································································································ 6
Symptom ···································································································································································· 6
Solution ······································································································································································ 6
Newly installed power supply failure ····························································································································· 6
Symptom ···································································································································································· 6
Solution ······································································································································································ 6
Fan tray failure ·································································································································································· 7
Symptom ···································································································································································· 7
Solution ······································································································································································ 7
Related commands ···························································································································································· 8
Troubleshooting ACL ···················································································································································· 9
ACL application failure with an error message ············································································································· 9
Symptom ···································································································································································· 9
Solution ······································································································································································ 9
ACL application failure without an error message ········································································································ 9
Symptom ···································································································································································· 9
Troubleshooting flowchart ···································································································································· 10
Solution ··································································································································································· 10
Related commands ························································································································································· 11
Troubleshooting IRF ···················································································································································· 12
IRF fabric setup failure ··················································································································································· 12
Symptom ································································································································································· 12
Troubleshooting flowchart ···································································································································· 13
Solution ··································································································································································· 13
Related commands ························································································································································· 15
Troubleshooting Ethernet link aggregation ··············································································································· 16
Link aggregation failure ················································································································································ 16
Symptom ································································································································································· 16
Troubleshooting flowchart ···································································································································· 17
Solution ··································································································································································· 17
Related commands ························································································································································· 18
Troubleshooting ports ················································································································································· 20
A 10-GE SFP+ fiber port or 40-GE QSFP+ fiber port fails to come up ···································································· 20
Symptom ································································································································································· 20

HP 5920 Series Specifications

General

Brand	HP
Model	5920 Series
Category	Switch
Language	English