[131845] in North American Network Operators' Group
RE: RINA - scott whaps at the nanog hornets nest :-)
daemon@ATHENA.MIT.EDU (Michael Hallgren)
Sat Nov 6 15:27:55 2010
From: Michael Hallgren <m.hallgren@free.fr>
To: George Bonser <gbonser@seven.com>
In-Reply-To: <5A6D953473350C4B9995546AFE9939EE0B14C7D0@RWC-EX1.corp.seven.com>
Date: Sat, 06 Nov 2010 20:27:37 +0100
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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Le samedi 06 novembre 2010 =C3=A0 12:15 -0700, George Bonser a =C3=A9crit :
> > Sent: Saturday, November 06, 2010 9:45 AM
> > To: nanog@nanog.org
> > Subject: Re: RINA - scott whaps at the nanog hornets nest :-)
> >=20
> > On 11/5/2010 5:32 PM, Scott Weeks wrote:
> > >
> > > It's really quiet in here. So, for some Friday fun let me whap at
> > the hornets nest and see what happens...>;-)
> > >
> > >
> > > http://www.ionary.com/PSOC-MovingBeyondTCP.pdf
> > >
> >=20
> > SCTP is a great protocol. It has already been implemented in a number
> > of
> > stacks. With these benefits over that theory, it still hasn't become
> > mainstream yet. People are against change. They don't want to leave v4.
> > They don't want to leave tcp/udp. Technology advances, but people will
> > only change when they have to.
> >=20
> >=20
> > Jack (lost brain cells actually reading that pdf)
>=20
> I believe SCTP will become more widely used in the mobile device world. =
You can have several different streams so you can still get an IM, for exam=
ple, while you are streaming a movie. Eliminating the "head of line" block=
age on thin connections is really valuable.=20
>=20
> It would be particularly useful where you have different types of traffic=
from a single destination. File transfer, for example, might be a good ap=
plication where one might wish to issue interactive commands to move around=
the directory structure while a large file transfer is taking place.
>=20
> If you really want to shake a hornet's nest, try getting people to get ri=
d of this idiotic 1500 byte MTU in the "middle of the internet"
I doubt that 1500 is (still) widely used in our Internet... Might be,
though, that most of us don't go all the way to 9k.
mh
> and try to get everyone to adopt 9000 byte frames as the standard. That=
change right there would provide a huge performance increase, load reducti=
on on networks and servers, and with a greater number of native ethernet en=
d to end connections, there is no reason to use 1500 byte MTUs. This is pa=
rticularly true with modern PMUT methods (such as with modern Linux kernels=
... /proc/sys/net/ipv4/tcp_mtu_probing set to either 1 or 2).
>=20
> While the end points should just be what they are, there is no reason for=
the "middle" portion, the long haul transport part, to be MTU 1500.
>=20
> http://staff.psc.edu/mathis/MTU/
>=20
>=20
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