[c-nsp] Nexus 3K (3048TP) and 10Gb twinax

Nick Hilliard nick at foobar.org
Sat Feb 20 06:11:41 EST 2016

CiscoNSP List wrote:
> # sh int eth 1/51
> Ethernet1/51 is down (SFP validation failed)

n3k will also report this if you use the wrong speed transceiver in the
port.  But in this case it looks like either you've got the wrong type
of DAC connected, or the DAC has been encoded incorrectly, or nxos
screwing up the media capabilities detection:

>  Dedicated Interface
>   Hardware: 1000/10000 Ethernet, address: 547f.ee7b.ff5a (bia 547f.ee7b.ff5a)
>   Full-duplex, 10 Gb/s, media type is 1G

this suggests incorrect cable or incorrect cable coding:

>     part number is GLC-LH-SMD-CURV


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