Brocade Fabric OS Message Reference (Supporting Fabric OS v7.3.0) - Manual (Page 595)

Fabric OS Message Reference 573
53-1003140-01
FW-1520
5
FW-1520
Message
, has dropped below upper threshold boundary to in
between(High=, Low=). Current value is .
Message Type
LOG
Severity
INFO
Probable Cause
Indicates that the number of invalid words that the port experiences has changed and dropped the below
upper threshold boundary to a value within the acceptable range. Invalid words usually indicate a
hardware problem with a small form-factor pluggable (SFP) or cable.
Recommended
Action
No action is required. Respond to this message as is appropriate to the particular policy of the end-user
installation.
FW-1521
Message
, has crossed lower threshold boundary to in between(High=
value>, Low=). Current value is .
Message Type
LOG
Severity
INFO
Probable Cause
Indicates that the number of invalid cyclic redundancy checks (CRCs) that the port experiences crossed
the lower threshold boundary to a value within the acceptable range.
Recommended
Action
Frequent fluctuations in CRC errors generally indicate an aging fabric. Check your small form-factor
pluggables (SFPs), cables, and connections for faulty hardware. Verify that all optical hardware is clean.
FW-1522
Message
, has dropped below upper threshold boundary to in
between(High=, Low=). Current value is .
Message Type
LOG
Severity
INFO
Probable Cause
Indicates that the number of invalid cyclic redundancy checks (CRCs) that the port experiences has
dropped below the upper threshold boundary to a value within the acceptable range.
Recommended
Action
Frequent fluctuations in CRC errors generally indicate an aging fabric. Check your small form-factor
pluggables (SFPs), cables, and connections for faulty hardware. Verify that all optical hardware is clean.