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

[Lennart Sorensen]

On Fri, Apr 30, 2004 at 12:58:50PM -0400, Kerry Panchoo wrote:
> 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 ?

The modem does generally not have an IP, it just acts as a bridge
device.  So no there is no way to test for that at least not remotely.

Lennart Sorensen
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