[89373] in North American Network Operators' Group
Re: UDP Badness [Was: Re: How to measure network quality&performance
daemon@ATHENA.MIT.EDU (Bill Nash)
Fri Mar 10 12:59:42 2006
Date: Fri, 10 Mar 2006 12:50:41 -0500 (EST)
From: Bill Nash <billn@odyssey.billn.net>
To: Richard A Steenbergen <ras@e-gerbil.net>
Cc: tony sarendal <dualcyclone@gmail.com>, nanog@nanog.org
In-Reply-To: <20060310174401.GY826@overlord.e-gerbil.net>
Errors-To: owner-nanog@merit.edu
On Fri, 10 Mar 2006, Richard A Steenbergen wrote:
>
> On Fri, Mar 10, 2006 at 11:52:40AM +0000, tony sarendal wrote:
>>
>> Does traceroute really do that ? Even for ICMP.
>> Think about it.
>>
>> Hint: the return packets your traceroute produces,
>> do they have the same return path for every hop ?
>>
>> Think Internet, think large providers with many peerings.
>
> On behalf of every network operator on the planet, I would like to take
> this opportunity to encourage every person who implements a traceroute or
> traceroute like program to ALWAYS DISPLAY THE SOURCE ADDRESS IN THE OUTPUT
> OF THE PROGRAM!@#$%^&
>
> Very few things in life suck more than asymmetric paths + wannabe network
> engineers armed with a noc phone number list and traceroute, mtr, or those
> wonderful visual traceroute programs that they insist on taking 6MB bmp
> screenshots of and sticking into word documents so they can email that as
> an attachment.
You will not learn hatred until that MMO you host implements a 'Report
network problem' button that does a traceroute, and automatically emails
it and a canned message to your NOC mailbox. Ultima Online did this, back
in my nocling days. Like monkeys expecting a reward, those little bastards
pounded on that button until the lag stopped.
It gave the west coast sucking sound that was Mae-West an entirely
different flavor. We could monitoring peering conditions based solely on
mailbox volume.
- billn
