RE: Program to monitor line quality?

From: Serge Maandag (
Date: Wed Nov 29 2000 - 07:11:04 EST

If you're a bit into perl, you could periodically do a ping -c <count>
to your default gateway,
grep the last line from the ping output, like:

5 packets transmitted, 1 packets received, +5 errors, 80% packet loss

Use a regexp to extract the 80% from the line and output it to a graph
with mrtg and/or call a mail client or sms client to notify you if the
packet loss exceeds a treshold.

Shouldn't be too difficult :)

Serge Maandag.

-----Original Message-----
From: Ralf G. R. Bergs [mailto:rabe@RWTH-Aachen.DE]
Sent: woensdag 29 november 2000 11:43
To: linux-net Mailing List; Serge Maandag
Subject: RE: Program to monitor line quality?

On Wed, 29 Nov 2000 10:27:36 +0100, Serge Maandag wrote:

>You could use mrtg (
>Somewhere under the user pages there is a 'plugin' to monitor
>line uptime, etc.
>I've used it and it works well.

Well, I'm already using it since more than a year, but it's not exactly
I want. With MRTG I don't see if the line drops out for just a few
or so. Even if it drops out for a longer period it's sometimes hard to

What I want is "something" that clearly indicates "line disrupted," that

optionally notifies me immediately when this occurs, that also notifies
if excessive ping times occur, etc.

Is such a thing available?



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