[96372] in North American Network Operators' Group

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Re: barak-online.net icmp performance vs. traceroute/tcptraceroute,

daemon@ATHENA.MIT.EDU (Joe Maimon)
Sun May 6 20:28:24 2007

Date: Sun, 06 May 2007 20:27:20 -0400
From: Joe Maimon <jmaimon@ttec.com>
To: Lincoln Dale <ltd@interlink.com.au>
Cc: "'nanog'" <nanog@merit.edu>
In-Reply-To: <00d301c7903c$8e6f8820$046f09cb@ltdbeast>
Errors-To: owner-nanog@merit.edu




Lincoln Dale wrote:

>>traceroute/tcptraceroute show packet loss and MUCH higher rtt than the
>>corresponding direct pings on the reported hop entries.
>>
>>Is this some sort of massaging or plain just "faking it"? Or is such
>>things merely net-urban myth?
> 
> 
> the vast majority of routers on the internet respond very differently to
> traffic 'directed at them' as opposed to traffic 'routed through them'.

Thanks for your reply.

I did include icmp echo directly to each hop as a comparison.



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