[c-nsp] Cisco Processing Regarding ICMP

[alaerte.vidali at nsn.com]

Totally agree. Do you know that times you receive request that you just
would like to forget?  :) 

-----Original Message-----
From: ext Gert Doering [mailto:gert at greenie.muc.de] 
Sent: Sunday, May 11, 2008 6:58 PM
To: Vidali Alaerte (NSN - BR/Rio de Janeiro)
Cc: paul.cosgrove at heanet.ie; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Cisco Processing Regarding ICMP

Hi,

On Sat, May 10, 2008 at 03:39:23PM -0500, alaerte.vidali at nsn.com wrote:
> Because internal network design requirements, it is necessary decrease

> internal MTU to slight lower than 1500 bytes,

Ugh.

This is *really* unusual.  Many networks increase their MTU to well
above 1500, so that even tunneled connections still are able to carry
full-MTU packets - but running a network below 1500 sounds like a Really
Bad Plan to me.  

Expect fun with all the sites out there that have Issues with PMTUD.
Lots.

gert
--
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Gert Doering - Munich, Germany
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fax: +49-89-35655025
gert at net.informatik.tu-muenchen.de