Testing to find out if a cable or DSL modem is online or not

[Kerry Panchoo]

Hi,

My application involves a number machines in remote locations connected 
to the internet via a cable modem or DSL. In some cases the machine may 
be down or internet connection may be lost.

I'd like to be able to determine which of these have taken place. Do you 
know what tests can be carried out to determine if the cable or DSL 
modem is in operation if i have the (hopefully) the current IP address 
of the modem ?

regards,
Kerry


--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml