[wellylug] adsl--DSL-504T

[David Antliff]

Roger Young wrote:
> I have similar problems with the 504G router.
> It usually drops the connection some time during the
> night. Since that is when IHUG have their "cheap"
> rate I began to wonder if it wasn't all a plot :)
> David, I would like a copy of your script please.

Hi Roger,

I have placed the script here:

http://homepages.ihug.co.nz/~david.antliff/scripts/monitor-dsl504g

It's written in Perl and has configurable parameters near the top. The 
comments should help you sort out what to do. Let me know if you can't 
get it to work. You might need to install a couple of Perl modules, the 
details of this will depend on your Linux distribution.

   Net::Telnet
   Net::Ping
   Term::ReadKey

I run this script inside a 'screen' session. It periodically performs a 
"TCP ping" to the specified target every 300 seconds (I use 
www.google.com, but you can use anything you want, including a numerical 
IP address if you want to avoid temporary DNS failures). If the ping 
fails, it checks more often for a duration and then will trigger a 
reboot on the router. It's set to email root at localhost when a reboot has 
occurred, which is easy to disable if you don't want this.

Note that the router password is held in memory by the script (although 
never displayed) so this might be a security issue. If anyone has a 
better way to do it, please let me know.

I hope this suits your needs. Feel free to modify of course, and if you 
come up with any improvements or a better way to do it, please let me know.

Thanks,

-- 
David.