Symptom:
show interface transceiver details output gives inconsistent output:

as1-nme.bllon# show int e1/20 transceiver details
    Error reading from SFP     <<<---------------------------

Ethernet1/20
    transceiver is present
    type is Fabric Extender Transceiver
    name is CISCO-FINISAR
    part number is FTLX8570D3BCL-C2
    revision is A
    serial number is FNS17510TZQ
    nominal bitrate is 10300 MBit/sec
    Link length supported for 50/125um OM3 fiber is 100 m
    Link length supported for 62.5/125um fiber is 10 m
    cisco id is --
    cisco extended id number is 4  <<< -----------------------------

Also all the output below the arrow portion is not visible here such as the signal strength etc.

Also in some cases the SFP values may show up as zero though the port is up:

----------------------------------------------------------------------------
  Temperature     0.00 C    +     0.00 C      0.00 C      0.00 C       0.00 C
  Voltage        0.00 V           0.00 V      0.00 V      0.00 V       0.00 V
  Current        0.00 mA   +      0.00 mA     0.00 mA     0.00 mA      0.00 mA
  Tx Power       N/A        +      N/A         N/A         N/A         N/A
  Rx Power        N/A        +       N/A         N/A         N/A          N/A
  Transmit Fault Count = 0
----------------------------------------------------------------------------

Conditions:
Customer's issue was noticed on the following platforms, however other platforms and software code versions might also be affected.


HW: N5K-C5596UP
SW: n5000-uk9.5.2.1.N1.6.bin

HW: N5K-C5548UP
SW: n5000-uk9.7.3.3.N1.1.bin