> From: Lixia Zhang <[email protected]>
> Subject: Re: Draft comments and questions...
> To: [email protected]
> Date: Mon, 4 Aug 1997 14:04:04 -0700 (PDT)
>
> > > From: Eric Travis <[email protected]>
> > >
> > > > > 4.2.1.2 Path-MTU Discovery
> > > > >
> > > Well, the big problems (in my mind) are:
> >
> > Add:
> >
> > 4. IPv6 does not support IP-layer fragmentation
>
> should be
> 4. IPv6 does not support IP-layer fragmentation at intermediate
> routers.
>
> (it does at source host)
Ahh - of course. In this context, I'm not sure source fragmentation
helps (i.e., in TCP where you don't know the path MTU).
I presume that fragmentation would also be a bad way to solve
a TCP MTU problem, because TCP (with SACK) can receive the individual
'fragments' if sent as separate, unfragmented IP datagrams.
If sent as fragments of a larger datagram, the entire IP packet
would be dropped as incomplete.
Joe
----------------------------------------------------------------------
Joe Touch - [email protected] http://www.isi.edu/~touch/
ISI / Project Leader, ATOMIC-2, LSAM http://www.isi.edu/atomic2/
USC / Research Assistant Prof. http://www.isi.edu/lsam/
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