* Sebastian Wiesinger via juniper-nsp <[email protected]> [2023-12-06
12:55]:
> Hi,
>
> we've run in some weird issue with 25G links and FEC between Juniper
> QFX5120 and Arista.
>
> We have functioning links using 25G-SR optics and FEC108
> (Reed-Solomon) error correction. On Arista thats default, on the QFX
> we use
>
> set interfaces et-0/0/46 gigether-options fec fec108
>
>
> This works.
>
> Trying the same on another switch with 25G-LR optics doesn't work.
To answer my own question: Found out that FEC108 for JunOS with 25G-LR
optics was implemented from 23.1 onwards, currently running on
23.2R1-S1 with FEC108 enabled on JunOS and default config on Arista.
Best Regards
Sebastian
--
'Are you Death?' ... IT'S THE SCYTHE, ISN'T IT? PEOPLE ALWAYS NOTICE THE SCYTHE.
-- Terry Pratchett, The Fifth Elephant
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