[e-nsp] Extreme X690/X870 with third party optics - DDMI broken?

[Marcin Kuczera]

On 2017-11-06 19:50, Simon Lockhart wrote:
> All,
>
> Does anyone have any Extreme X690/X870 switches that they're using third
> party optics in? Or come to that, Extreme 40G and 100G optics? :)
>
> I'm trying to use 10G SFP+, 40G QSFP and 100G QSFP28's from Flexoptix in these
> switches, and none of them are showing correct values in DDMI ("show port
> transceiver info"). The 10G SFP+'s work fine in X460s and X670s and report
> correct DDMI values.
>
> Running 22.3.1.4 (and tried patch 1-4 too).

How about if you put these (10G) modules into some other switches/routers ?
It looks like some random/errorous data read via I2C. Do you have any
faults in switch log ?
What is show in show port 19 trans in detail ?
Eventually, debug hal show optic slot 1 port 19

We use a lot of SFP+ from xbest.pl, sourced from e-optolink and we have
no problems on extreme.
Also 40G QSFP+ modules are fine.
No experience with 100G

Marcin

>
> (10G LR SFP+)
> X690.2 # show port 19 tran in
>
> Port      Temp    TxPower  RxPower  TxBiasCurrent  Voltage-Aux1/ Voltage-Aux2
>        (Celsius)   (dBm)    (dBm)     (mA)         Vcc (Volts)       (Volts)
> ================================================================================
> 19        0.35*    -16.27*    6.14*    0.17*         0.02*         N/A           
> ================================================================================
>
>
> (40G LR4 QSFP)
> X690.1 # show port 57 tran info
>
> Port      Temp    TxPower  RxPower  TxBiasCurrent  Voltage-Aux1/ Voltage-Aux2
>        (Celsius)   (dBm)    (dBm)     (mA)         Vcc (Volts)       (Volts)
> ================================================================================
> 57       -63.88*     1.73*   -1.42*    75.29*         6.54*         N/A           
>            "       -12.65*    6.26*    5.15           "              "            
>            "        7.20*    5.29*    114.73*          "              "            
>            "        6.96*    7.31     63.01*          "              "            
> ================================================================================
>
>
> I see the same symptoms on a 100G LR4 QSFP28 and 100G AOC cable.
>
> I've even tried using a genuine Extreme 100G AOC cable and it shows the same
> problem. I did log a TAC case for this particular problem, and they say it's
> just cosmetic, because AOC cables don't need to provide DDMI info (and logged
> a software bug to make it not display the incorrect values).
>
> Unfortunately I don't have any genuine Extreme 10G, 40G or 100G optics to test
> with (and at the price of genuine Extreme 100G optics, I'm highly unlikely to,
> either!).
>
> Anyone else seen this?
>
> Simon
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-- 

Marcin Kuczera / Wiceprezes Zarządu / CTO
+48 32 440 80 71/ marcin.kuczera at leon.pl <mailto:marcin.kuczera at leon.pl>

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