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

[ccie4526]

Have seen the same issue with 3rd party twinax in the 4500X with latest
firmware, even with the unsupported transceiver command. Replaced them with
real Cisco cables, problem went away. Guess they have new microcode on the
twinax sfps now.

...Ron CCIE4526 Emeritus
On Feb 20, 2016 8:26 AM, "CiscoNSP List" <CiscoNSP_list at hotmail.com> wrote:

>
> Hi everyone,
>
>
> Trying to connect 2 Nexus 3Ks together for VPC via 2 x 10Gb ports (With
> 10Gb twinax cables(3rd party)), but the Nexus reports them as "SFP
> validation failed", and only 1Gb?
>
>
> # sh int eth 1/51
> Ethernet1/51 is down (SFP validation failed)
>  Dedicated Interface
>   Hardware: 1000/10000 Ethernet, address: 547f.ee7b.ff5a (bia
> 547f.ee7b.ff5a)
>   MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
>   reliability 255/255, txload 1/255, rxload 1/255
>   Encapsulation ARPA
>   Port mode is access
>   Full-duplex, 10 Gb/s, media type is 1G
>
>
>
> Ive tried service unsupported-transceiver, but they are still reporting as
> only 1Gb?
>
>
> # sh int e1/51 transceiver details
> Ethernet1/51
>     transceiver is present
>     type is 1000base-X
>     name is OEM
>     part number is GLC-LH-SMD-CURV
>     revision is 001
>     serial number is H1508186077
>     nominal bitrate is 1300 MBit/sec
>     Link length supported for 9/125um fiber is 20 km
>     cisco id is --
>     cisco extended id number is 4
>
>            SFP Detail Diagnostics Information (internal calibration)
>
> ----------------------------------------------------------------------------
>                 Current              Alarms                  Warnings
>                 Measurement     High        Low         High          Low
>
> ----------------------------------------------------------------------------
>   Temperature   31.78 C        85.00 C    -10.00 C     80.00 C       -5.00
> C
>   Voltage        3.26 V         3.70 V      2.90 V      3.59 V        3.00
> V
>   Current        0.23 mA  --   65.00 mA    10.00 mA    60.00 mA      12.00
> mA
>   Tx Power        N/A     --    0.99 dBm  -13.01 dBm    0.00 dBm    -12.00
> dBm
>   Rx Power        N/A     --    0.99 dBm  -26.98 dBm    0.00 dBm    -26.98
> dBm
>
> ----------------------------------------------------------------------------
>   Note: ++  high-alarm; +  high-warning; --  low-alarm; -  low-warning
>
>
> Also tried forcing 10Gb, but get the following error:
>
>
> (config-if)# speed 10000
> ERROR: Ethernet1/51: Configuration does not match the port capability.
>
>
>
> I dont have physical access to the switches(Ive just got console access),
> but we def ordered 10Gb twinax cables....has anyone else seen this issue
> before?  (The 10Gb ports on the Nex3K's support copper correct?)
>
>
> Cheers
>
>
>
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