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Catalyst 3750, 3560, 3550, 2975, 2970, and 2960 Switch System Message Guide
OL-8551-04
Chapter 3 Message and Recovery Proced ures
GBIC_SECURITY_UNIQUE Messages
Error Message GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC interface [chars] has
bad crc.
Explanation The small form-factor pluggable (SFP) module was identified as a Cisco SFP module,
but it does not have a valid cyclic redundancy check (CRC) in the EEPROM data. [chars] is the port.
Recommended Action Ensure that the Cisco IOS software running on the switch supports the SFP
module. You might need to upgrade your software. Even if the switch does not recognize the SFP
module, it might still operate properly but have limited functionality.
GBIC_SECURITY_UNIQUE Messages
This section contains the Cisco GBIC module and SFP module security messages that identify whether
the module is unique.
Note The Catalyst 3750, 3560, and 2970 switch supports SFP modules and does not support GBIC modules.
Although the error message text refers to GBIC interfaces and modules, the messages from the switch
actually refer to the SFP module interfaces and modules.
Error Message GBIC_SECURITY_UNIQUE-3-DUPLICATE_GBIC: GBIC interface [dec]/[dec] is
a duplicate of GBIC interface [dec]/[dec].
Note This message applies only to Catalyst 3750, 3560, and 2970 switches.
Explanation The SFP module was identified as a Cisco GBIC or SFP module, but its vendor ID and
serial number match that of another interface on the system. The first [dec]/[dec] is the interface of
the duplicate GBIC or SPF module, and the second [dec]/[dec] is the interface of the existing
module.
Recommended Action Cisco GBIC or SFP modules are assigned unique serial numbers. Verify that
the module was obtained from Cisco or from a supported vendor.
Error Message GBIC_SECURITY_UNIQUE-4-DUPLICATE_SN: GBIC interface [dec]/[dec] has
the same serial number as another GBIC interface.
Note This message applies only to Catalyst 3750, 3560, and 2970 switches.
Explanation The SFP module was identified as a Cisco SFP module, but its serial number matches
that of another interface on the system. [dec]/[dec] is the interface in which the duplic ate module is
installed.
Recommended Action Cisco SFP modules are assigned unique serial numbers. Verify that the module
was obtained from Cisco or from a supported vendor.