[a-nsp] Weird L1 issue ...

[Siyuan Miao]

Have you tried FEC?
> error-correction encoding reed-solomon


On Thu, Nov 30, 2023 at 11:25 PM Bryan Holloway via arista-nsp <
arista-nsp at puck.nether.net> wrote:

> Got a weird one ...
>
> 7060CX running 4.28.9M (near-side)
>
> Trying to bring up a 100G link between it and another 7060CX (far-side)
> with a carrier providing a wave in-between.
>
> The near-side Arista is new. Prior to its install, we had this circuit
> plugged into a Mellanox, and it works fine -- no issues whatsoever.
>
> When we move the circuit to the near-side Arista, it won't come up. No
> link.
>
> Tried new optics, no change.
>
> Actually swapped out the switch itself, no change.
>
> Even if we pull the Arista optics and plug it into the Mellanox, it
> works fine.
>
> Normalize the circuit, it just won't come up.
>
> We see good light from the carrier, and the carrier says they see good
> light from us.
>
> Are there any knobs I'm missing, or can anything think of a reason for
> this behavior?
>
> I'm baffled.
> --
> arista-nsp mailing list
> arista-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/arista-nsp
>
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