1500 does not work: Thoughts on increasing MTUs on the internet

Marshall Eubanks tme at multicasttech.com
Sat Apr 14 13:13:37 UTC 2007


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 at peter-dambier.de
> mail: peter at echnaton.arl.pirates
> http://iason.site.voila.fr/
> https://sourceforge.net/projects/iason/
> http://www.cesidianroot.com/
>




More information about the NANOG mailing list