BCE on FreeBSD and oversized packet acceptance.

[Julian Elischer]

Randy Bush wrote:
>>>> what size is the actual maximal sized jumbo packet we will ever see?
>>> some transpac science community folk, who care more about speed trials
>>> with big data sets than they do about over-stretching the ethernet crc,
>>> use 9k jumbo frames.
>> well that's the standard but the highest I've seen mentioned as a normal
>> size is I think 9220 bytes.
> 
> i suggest being careful with the word "standard."  ieee, which controls
> the ethernet spec, has refused to standardize anything above 1500 on the
> grounds that it would over-stretch the crc.
> 

true, (I was surprised to not see 9k packets in the standard (though old)
that I have. (I guess now I'm in Cisco I could get to a newer one).
but practicality suggests that we spport what the customer is doing.


> randy