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

Page 154 highlights

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

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Responding to Fabric Watch Messages
154
Fabric Watch Version 3.1.x/4.1.x User Guide
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
FW-CHANGED, 4, alpaPerfCRC
<element index>
(ALPA Invalid CRCs
<element index>
) value has changed. current value :
<value>
Error(s)/minute. (info)
Description
Explains that the cumulative number of CRC errors has changed. Provides
the new value.
Troubleshooting
This is an informational message. Respond to this message as is appropriate
to the particular policy of the end-user installation.
Message
FW-ABOVE, 3, alpaPerfCRC
<element index>
(ALPA Invalid CRCs
<element index>
) is above high boundary. current value :
<value>
Error(s)/minute. (faulty)
Description
Explains that the cumulative number of CRC errors has risen above the high
boundary. Provides the new value.