3Com CoreBuilder 9000 Installation Manual page 14

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Unqualified GBIC: Checksum match error
Meaning: The system uses checksum error detection to verify the
integrity of the GBIC data. If the system detects a problem with the
data, it displays an error message that indicates a checksum failure.
Corrective action: Although this condition does not necessarily
indicate that the GBIC transceiver will not function in the system,
replace the transceiver to ensure proper operation.
Unqualified GBIC: MODDEF Value – xx
Unqualified GBIC: Transceiver byte(s) error
Meaning: For both of these messages, the value (xx) of this GBIC
type is not a Module Definition 4 GBIC (Serial Identification) as
defined by the Gigabit Interface Converter specification.
Corrective action: Replace this transceiver with a GBIC that is
qualified by 3Com.
GBIC Disable Error
If the system detects that the transceiver cannot emit the proper laser
signal, it disables the port, sets the port type to
short description (
log.
The following message appears in the event log:
Due to excessive TxFault conditions, GBIC Port xx has
been disabled.
Meaning: Excessive Tx Fault conditions indicate a faulty GBIC.
GBIC Disable
disabled
), and captures the error in the event
, displays a