Restarting modem/router through software

[Paul Smith]

On 1/9/07, Paul Smith <phhs80 at gmail.com> wrote:
> > > >> One thing you may want to check on is if the public IP address you
> > > >> have changes during the night. Your DHCP lease may be expiring, and
> > > >> you are getting a "new" IP address.
> > > >
> > > > You really ought to get the same IP address, then.  The scheme is for
> > > > your DHCP client (most likely within your modem, unless you use it in a
> > > > bridge mode) to "renew" the lease before the expiry period.
> > > >
> > > Yes, that is what "should" happen. Then again, you should not have
> > > to restart the modem every couple of days. But if the modem is not
> > > renewing the lease, and it is expiring, then a new IP address after
> > > power-cycling the modem would be a good indication.
> > >
> > > > If your ISP is changing IPs on you arbitrarily, I'd be looking for
> > > > another ISP.  One that isn't so mismanaged.
> > > >
> > > An IP address that changes before you power-cycle the modem would be
> > > an indication of this, and as you said, time for a new ISP, if
> > > possible. (Some places, you do not have a choice for hi-speed
> > > Internet...)
> >
> > Thanks for all replies. The problem usually occurs during the night,
> > with aMule the sole application running. How can I check whether the
> > IP changed after a power cycling? (Unfortunately, I do not have many
> > choices of ISPs available.)
>
> Your guesses seem correct: my ISP changes my IP, or, at least, this
> morning the modem/router was again stuck and after a power cycling the
> IP was different.

It would be interesting to have a script to detect a change of IP and
restart the modem after that. Perhaps, someone here know how to do
such a script.

Paul