Restarting modem/router through software

[Robin Laing]

Paul Smith wrote:
> 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
> 
Maybe one of the scripts for dynamic dns services could be modified.

I was using an ISP that changed the IP every second night.  Of course 
they would use the expiry times via DHCP.  My router software didn't 
like this very much until after an upgrade.  Maybe there is an upgrade 
for your router.


-- 
Robin Laing