[Beowulf] fdr in edr switch

[Paul Edmon]

We haven't had any problems with plugging FDR stuff into and EDR 
switch.  It does downgrade the connections but still works.

-Paul Edmon-

On 3/2/2021 6:44 AM, Darren Wise wrote:
> Heya,
>
> I do very much the same QSFP28-EDR 100G adapter cards into QSFP+-FDR 
> 56G just with the use of a cable. I even QSFP+-FDR to 4x SFP+-10G 
> using various brocade, mellanox, chelsio hardware and have never come 
> out worse.
>
> Some cables can be a bit funny but I have never had issues with cables 
> branded by NetApp, DELL, CISCO or purchasing coded variants from 
> suppliers. However FS.com are a valued cable supplier for anything 
> that I might think could be a bit fickle.
>
> Allot of the time it is cable compatibility and rarely the adapters 
> themselves.
>
> Hope this help you out buddy :)
> Kind regards,
> Darren Wise
>
> https://wisecorp.co.uk <https://wisecorp.co.uk>
> https://kotidc.com <https://kotidc.com>
> https://thirah.com <https://thirah.com>
> https://woprcompute.com <https://woprcompute.com>
> https://adsstech.com <https://adsstech.com>
>
> On 1 March 2021 19:02:36 GMT, Michael Di Domenico 
> <mdidomenico4 at gmail.com> wrote:
>
>     has anyone plugged a mellanox fdr card into a mellanox edr switch?  i
>     need to connect a server that doesn't have a x16 port so no edr card,
>     but i do have an fdr card that's x8.  i don't need the speed just the
>     connection, but i've not tried this before.  a quick google says it
>     should work, but i'm loathe to until i hear someone else has.
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