Re: 100G, input errors and/or transceiver issues

[Saku Ytti <saku () ytti fi>]

On Mon, 19 Jul 2021 at 20:19, Graham Johnston
<johnston.grahamj () gmail com> wrote:

> I don't at this point have long term data collection compiled for the issues that we've faced. That said, we have two 
> 100G transport links that have a regular background level of input errors at ranges that hover between 0.00055 to 
> 0.00383 PPS on one link, and none to 0.00135 PPS (that jumped to 0.03943 PPS over the weekend). The range is often 
> directionally associated rather than variable

On typical 100G link we do not get single FCS error in a typical day.
However Ethernet spec still allows very high error rate of 10**-12. So
1 error per 1Tb (b not B). I.e. 1 error per 10s, or 0.1PPS would be
in-spec. We see much better performance to this and vendors generally
accept lower error rates as legitimate errors.

-- 
  ++ytti