UDP Badness [Was: Re: How to measure network quality&performance for voip&gameservers (udp packetloss, delay, jitter,...)]

Bill Nash billn at odyssey.billn.net
Fri Mar 10 17:50:41 UTC 2006


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 [email protected]#$%^&
>
> 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



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