From: Guillaume Marcais <guslist@...>
Date: 2005-06-24T05:09:11+09:00
Subject: Re: Dead gateway detection

On Fri, 2005-06-24 at 03:55 +0900, balcersk wrote:

> Well what I'am trying to do is to write script witch logs all
> "internet holes" their times etc etc. My ISP has an DSL modem
> connected to localnetwork (i am on that network too). The second
> modem is inside ISP building. Ones for 10 minutes, for few seconds I 
> have no connection to gateway (I have public addres so my gateway is in 
> ISP bulding). I KNOW this is problem beetwean dsl modems. I'am trying to 
> prove that thay cheat me a little:). The best way i think is to sumarise
> frequency and length of non working internet times. That's why this idea 
> has came, to write simple ruby script. So in this particular case ICMP 
> ping would be enough but I see no way to call it from Ruby.
> 

Not that I am trying to steer you away from Ruby, but have you look at
tools like smokeping by Tobias Oetiker:

http://people.ee.ethz.ch/~oetiker/webtools/smokeping/

It should do what you want and in the most pretty way.

Otherwise, look in RAA for net-ping, icmpmodule or icmpping. I have used
icmpmodule with quite some success, on both Linux and Windows.

Hope it helps,
Guillaume