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RE: The IPv4 Internet MTU

To: "Iljitsch van Beijnum" <iljitsch@muada.com>, "Brian E Carpenter" <brian.e.carpenter@gmail.com>
Subject: RE: The IPv4 Internet MTU
From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
Date: Fri, 12 Oct 2007 06:00:23 -0700
Cc: "IPv6 Operations" <v6ops@ops.ietf.org>
In-reply-to: <3D6A011D-4356-4E1E-8299-67C9C48F5BC3@muada.com>
References: <DACB514F44E4864CAFDC7DAD144A7E6C8E57C28BA0@NA-EXMSG-W601.wingroup.windeploy.ntdev.microsoft.com> <b421a96407453920c5d290e54545c4cb@chewa.net> <470CBDFE.2080807@ericsson.com> <470D3B47.7050908@gmail.com> <3D6A011D-4356-4E1E-8299-67C9C48F5BC3@muada.com>

 

> -----Original Message-----
> From: Iljitsch van Beijnum [mailto:iljitsch@muada.com] 
> Sent: Thursday, October 11, 2007 9:47 AM
> To: Brian E Carpenter
> Cc: IPv6 Operations
> Subject: Re: The IPv4 Internet MTU
> 
> On 10-okt-2007, at 22:51, Brian E Carpenter wrote:
> 
> > On 2007-10-11 00:56, Magnus Westerlund wrote:
> >> MTU's are real bastard.
> 
> :-)

Double :-) :-)
 
> For IPv4, an obvious method would be to send packets with DF=0 and  
> hear from the other side how big the fragments are but that's not  
> possible with IPv4.

Have been there, and won't go there again. Size of fragments
usually indicates size of links in the path - but not always!

Fred
fred.l.templin@boeing.com

References:
- RE: The IPv4 Internet MTU
  - From: Christian Huitema <huitema@windows.microsoft.com>
- RE: The IPv4 Internet MTU
  - From: Rémi Denis-Courmont <rdenis@simphalempin.com>
- Re: The IPv4 Internet MTU
  - From: Magnus Westerlund <magnus.westerlund@ericsson.com>
- Re: The IPv4 Internet MTU
  - From: Brian E Carpenter <brian.e.carpenter@gmail.com>
- Re: The IPv4 Internet MTU
  - From: Iljitsch van Beijnum <iljitsch@muada.com>

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