On 25/10/2016 05:50, Vidya Sagar Ravipati wrote:
> SET FEC option:
> root@tor: ethtool --set-fec  swp1 encoding [off | RS | BaseR | auto] autoneg 
> [off | on]
> 
> Encoding: Types of encoding
> Off    :  Turning off any encoding
> RS     :  enforcing RS-FEC encoding on supported speeds
> BaseR  :  enforcing Base R encoding on supported speeds
> Auto   :  Default FEC settings  for  divers , and would represent

divers? :)

>           asking the hardware to essentially go into a best effort mode.
> 
> Here are a few examples of what we would expect if encoding=auto:
> - if autoneg is on, we are  expecting FEC to be negotiated as on or off
>   as long as protocol supports it
> - if the hardware is capable of detecting the FEC encoding on it's
>       receiver it will reconfigure its encoder to match
> - in absence of the above, the configuration would be set to IEEE
>   defaults.

Not sure I follow, why do we need an autoneg option if encoding type can be set 
to auto?

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