OPERATIONAL DEFECT DATABASE
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The same SFP shows different PID and DOM values while it is being inserted to different ports on the same Nexus switch. This may lead to alarms related to crossed thresholds listed in DOM section. This is false-positive alarm, as thresholds are not related to particular SFP.
The same SPF tested in different ports of Nexus.
SFP works fine, but providing wrong PID and DOM values. No trigger has been found. Reload clears the issue and PID and DOM values are being read correctly.
Example of the issue: Ethernet1/3 transceiver is present type is SFP-H25GB-SR name is CISCO part number is CISCO-C1 revision is A serial number is XYZ12345678 nominal bitrate is 25500 MBit/sec Link length supported for 50/125um OM3 fiber is 300 m cable type is multimode fiber cisco id is 3 cisco extended id number is 4 cisco part number is 10-2415-03 cisco product id is SFP-10G-SR cisco version id is V03 SFP Detail Diagnostics Information (internal calibration) ---------------------------------------------------------------------------- Current Alarms Warnings Measurement High Low High Low ---------------------------------------------------------------------------- Temperature 46.33 C 75.00 C -5.00 C 70.00 C 0.00 C Voltage 3.30 V 3.63 V 2.97 V 3.46 V 3.13 V Current 7.41 mA 10.50 mA 2.50 mA 10.50 mA 2.50 mA Tx Power -2.34 dBm 1.69 dBm -11.30 dBm -1.30 dBm -7.30 dBm Rx Power -2.33 dBm 1.99 dBm -13.97 dBm -1.00 dBm -9.91 dBm Transmit Fault Count = 0 ---------------------------------------------------------------------------- Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning Ethernet1/4 transceiver is present type is SFP-H25GB-SR name is CISCO part number is CISCO-C1 revision is A serial number is XYZ12345678 <<<<<<<<<< the same serial number nominal bitrate is 25500 MBit/sec Link length supported for 50/125um OM3 fiber is 300 m cable type is multimode fiber cisco id is 3 cisco extended id number is 4 cisco part number is 10-3227-01 cisco product id is SFP-25G-SR-S <<<<<<<<<< different PID cisco version id is V01 SFP Detail Diagnostics Information (internal calibration) ---------------------------------------------------------------------------- Current Alarms Warnings Measurement High Low High Low ---------------------------------------------------------------------------- Temperature 34.77 C 75.00 C -5.00 C 70.00 C 0.00 C Voltage 3.31 V 3.63 V 2.97 V 3.46 V 3.13 V Current 7.03 mA 10.00 mA 2.00 mA 8.50 mA 3.00 mA Tx Power 0.11 dBm 5.39 dBm -12.44 dBm 2.39 dBm -8.41 dBm <<<<<<<<<< different thresholds Rx Power -1.68 dBm 5.39 dBm -14.31 dBm 2.39 dBm -10.31 dBm <<<<<<<<<< different thresholds Transmit Fault Count = 0 ---------------------------------------------------------------------------- Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning
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