Re: [Nolug] Cox Problem?

From: Scott Harney <scotth_at_scottharney.com>
Date: Mon, 14 Mar 2005 14:53:29 -0600
Message-ID: <4235F9C9.8040600@scottharney.com>

John Souvestre wrote:
> Hi Ray.
>
> You are correct, however I've never heard of anyone setting ping limits in the
> 1 packet per second range. Perhaps 1000 packets per second, yes.
>
> PingPlotter also supports ICMP, TCP and UDP packets. It's really a neat
> utility! I use it and MultiPing constantly. http://www.pingplotter.com Only
> bad thing is that they are Windows only.

mtr http://www.bitwizard.nl/mtr/ gives you similar functionality under Linux.
Works in a console SSH session too!

>
> John
>
> John Souvestre - Southern Star - (504) 888-3348 - www.sstar.com
>
>
> -----Original Message-----
> From: owner-nolug@nolug.org [mailto:owner-nolug@nolug.org] On Behalf Of -ray
> Sent: Monday, March 14, 2005 2:08 PM
> To: nolug@nolug.org
> Subject: RE: [Nolug] Cox Problem?
>
> On Mon, 14 Mar 2005, John Souvestre wrote:
>
>
>>But when you ping out from the inside, many are seeing packet loss past that
>>router, at the same time as that router looses them. The obvious conclusion
>>is that this router is dropping not only local packets but also pass through
>>packets. This is totally unacceptable.
>
>
> It is possible they are rate-limiting ICMP for both forwarded and local
> packets. Unfortunately ICMP has become less useful than it once was for
> network troubleshooting... we have Windows worms to thank for this.
>
> There is an app out there called "tcpping" that will "ping" an IP using
> tcp SYN packets on any open port to measure latency. You might give that
> a shot also.
>
> ray

-- 
Scott Harney <scotth@scottharney.com>
"Asking the wrong questions is the leading cause of wrong answers"
gpg key fingerprint=7125 0BD3 8EC4 08D7 321D CEE9 F024 7DA6 0BC7 94E5
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