[76797] in North American Network Operators' Group
Re: Smallest Transit MTU
daemon@ATHENA.MIT.EDU (Joe Abley)
Wed Dec 29 17:05:19 2004
In-Reply-To: <OF54254D1A.E3BDAA69-ON88256F79.00758050-88256F79.007671DA@us.ibm.com>
Cc: nanog@merit.edu
From: Joe Abley <jabley@isc.org>
Date: Wed, 29 Dec 2004 17:04:11 -0500
To: Tony Rall <trall@almaden.ibm.com>
Errors-To: owner-nanog-outgoing@merit.edu
On 29 Dec 2004, at 16:33, Tony Rall wrote:
> But that only affects tcp traffic - it does nothing to help other
> protocols.
Are there any common examples of the DF bit being set on non-TCP
packets?
> The better solution is to ensure that PMTUD works correctly for your
> network, and get on the case of any correspondent or provider for
> which it
> doesn't.
Making sure that pMTUd works in your own network doesn't solve the
problem. You need to make sure it works properly in every other network
with which you ever might want to exchange a 1500-byte packet.
Joe
