HP StorageWorks MSA 2/8 HP StorageWorks Fabric Watch V3.1.x/4.1.x User Guide ( - Page 154
Alpa Performance Monitor Class Messages, Invalid CRCs Area Messages, Probable Cause
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Responding to Fabric Watch Messages Alpa Performance Monitor Class Messages Invalid CRCs Area Messages Probable Cause Errors have been detected at the FC frame. Invalid CRC messages occur when the number of CRC errors in fibre channel frames for specific source ID (SID) and destination ID (DID) pairs change. These messages may also be caused by dirty equipment, temperature fluctuations, and aging equipment. Note: HP recommends that you set your high boundaries to five- or six-digit figures, as only large numbers of messages indicate a problem in this area. Recommended Action Replace low-quality physical components, optical cables, or SFPs. Clean connectors. Check for damage from heat or age. Messages Message Description Troubleshooting FW-CHANGED, 4, alpaPerfCRC (ALPA Invalid CRCs ) value has changed. current value : Error(s)/minute. (info) Explains that the cumulative number of CRC errors has changed. Provides the new value. This is an informational message. Respond to this message as is appropriate to the particular policy of the end-user installation. Message Description FW-ABOVE, 3, alpaPerfCRC (ALPA Invalid CRCs ) is above high boundary. current value : Error(s)/minute. (faulty) Explains that the cumulative number of CRC errors has risen above the high boundary. Provides the new value. 154 Fabric Watch Version 3.1.x/4.1.x User Guide