[96035] in North American Network Operators' Group
Re: 1500 does not work: Thoughts on increasing MTUs on the internet
daemon@ATHENA.MIT.EDU (Marshall Eubanks)
Sat Apr 14 09:18:53 2007
In-Reply-To: <46208503.2070605@peter-dambier.de>
Cc: NANOG list <nanog@merit.edu>
From: Marshall Eubanks <tme@multicasttech.com>
Date: Sat, 14 Apr 2007 09:13:37 -0400
To: peter@peter-dambier.de
Errors-To: owner-nanog@merit.edu
Hello;
On Apr 14, 2007, at 3:38 AM, Peter Dambier wrote:
>
> Fred Baker wrote:
>> ...
>> 1500 byte MTUs in fact work. I'm all for 9K MTUs, and would
>> recommend them. I don't see the point of 65K MTUs.
>> ...
>
> Well, with almost everybody using PPP0E in germany and at least half
> of europe our mtu is somewhere arround 1480. Many routers are
> braindead
> (ICMP lobotomiced).
>
> When you hit somebody on an ip2ip link or IPv6 tunnel your mtu goes
> down
> to even smaller packets and things live ftp or ssh simply break. I
> have
> seen many gamers on mtu = 1024 and smaller.
I advise people doing streaming to not use MTU's larger than ~1450
for these sorts of reasons.
>
> Kind regards
> Peter and Karin Dambier
>
Regards
Marshall
> --
> Peter and Karin Dambier
> Cesidian Root - Radice Cesidiana
> Rimbacher Strasse 16
> D-69509 Moerlenbach-Bonsweiher
> +49(6209)795-816 (Telekom)
> +49(6252)750-308 (VoIP: sipgate.de)
> mail: peter@peter-dambier.de
> mail: peter@echnaton.arl.pirates
> http://iason.site.voila.fr/
> https://sourceforge.net/projects/iason/
> http://www.cesidianroot.com/
>
