Re: [Int-area] FW: Last Call: 'Fragmentation Considered Very Harmful' to Informational RFC (draft-heffner-frag-harmful)

On Wed, 11 Oct 2006, Pekka Savola wrote:

> - The title should really be "IPv4 Fragmentation Considered Very
> Harmful" plus some minor wording changes.  The document does not as
> written provide sufficient justification why IPv6 fragmentation should
> be considered "very harmful" as IPv6 has 2^16 more bits of fragment
> space, mandatory PMTUD, and routers not fragmenting packets.
>
> I have no problem that the draft also mentions how the considerations
> also apply to IPv6, but not underlining that the serious problems
> mentioned in the draft are IPv4-specific is not good.

I disagree.  If you do the math, 2^32 * 1500 Bytes / MSL is only about one
terabit/second, which we will probably hit in 10-20 years.  I know that number
sounds mind-boggling, but let me assure you than in the early 90's, when we
were just getting FDDI (100 Mb/s) and DS-3's working in the wide area, 10 Gb/s
was equally inconceivable.

Thanks,
--MM--

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