[109625] in North American Network Operators' Group

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Re: Recommendation of Tools

daemon@ATHENA.MIT.EDU (Pekka Savola)
Wed Dec 3 01:53:18 2008

Date: Wed, 3 Dec 2008 08:52:40 +0200 (EET)
From: Pekka Savola <pekkas@netcore.fi>
To: Andrew Mulholland <andy-nanog@bash.sh>
In-Reply-To: <c164b68c0812022023u18cb201av9b7c7f31ce0eaa9d@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org

On Tue, 2 Dec 2008, Andrew Mulholland wrote:
> On Tue, Dec 2, 2008 at 10:47 PM, Lee, Steven (NSG Malaysia) <
> kin-wei.lee@hp.com> wrote:
>
>> Hi all, do you have any recommended tools that can measure latency/delay
>> hop by hop basis? Preferable the tools can measure the running (live)
>> traffic.
>>
>
> mtr ? - http://www.bitwizard.nl/mtr/

FWIW, Mtr measures latency/delay and loss based on ICMP messages heard 
back from the routers on path.  As a result, in almost all cases, the 
real hop-by-hop latency of actual end-to-end data packets is better 
than it can report.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings


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