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Reverse-engineering H3C/HP A5800 SFP coding: vendor bytes at A0h 60h-7Fh and A2h page 02h
The poster operated old HP/H3C A5800 switches (JC100A, JC103A) with many SFP modules of mixed coding. Modules with H3C in A0h bytes 60h-62h worked but logged This is not a supported transceiver for this platform, and DDM plus serial/date information were unavailable. Copying the full data from a…