auto-switch LAN to dialup?

  • Thread starter Thread starter Gretch
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Gretch

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Is there some mechanism by which we could test, perhaps every minute, for
Internet connectivity via the LAN interface (e.g., ping a remote
nameserver), and if that has failed, initiate an already-named dialup
connection?

We have a satellite connection which occasionally "goes down" due to severe
weather on either end, and need to re-establish an Internet connection via
dialup while unattended for a single w2000 machine as necessary.

Thank you.
 
Re: auto-switch LAN to dialup?

In news:5jr3abFtbn7U1@mid.individual.net,
Gretch <gretchen@invalid.corn> wibbled
> Is there some mechanism by which we could test, perhaps every minute,
> for Internet connectivity via the LAN interface (e.g., ping a remote
> nameserver), and if that has failed, initiate an already-named dialup
> connection?
>
> We have a satellite connection which occasionally "goes down" due to
> severe weather on either end, and need to re-establish an Internet
> connection via dialup while unattended for a single w2000 machine as
> necessary.
>
> Thank you

Properties in Internet Explorer > Connections > select "Dial whenever a
network connection is not present" ... and set the required dial up as
default

--
Steve Parry MCP MVP
www.gwynfryn.co.uk
 
Re: auto-switch LAN to dialup?

In news:epSG81U7HHA.464@TK2MSFTNGP02.phx.gbl,
Steve Parry [MVP] <k100rs_1990@nospam.hotmail.com> typed:

>> Is there some mechanism by which we could test, perhaps every minute,
>> for Internet connectivity via the LAN interface (e.g., ping a remote
>> nameserver), and if that has failed, initiate an already-named dialup
>> connection?
>>
>> We have a satellite connection which occasionally "goes down" due to
>> severe weather on either end, and need to re-establish an Internet
>> connection via dialup while unattended for a single w2000 machine as
>> necessary.
>
> Properties in Internet Explorer > Connections > select "Dial whenever
> a network connection is not present" ... and set the required dial up
> as default

Sorry, but that won't work, as proven last evening when weather interfered
with the satellite reception on the other end. The LAN connection is fine,
but the route to the destination is down 3 hops away. Even though "Dial
whenever a network connection is not present" is checked in IE, the
real-time application of primary concern has nothing to do with IE, so a
manual dialup became necessary. We need to have an automated method for
dealing with this issue, please

Would someone be willing to suggest a .bat script that could ping the remote
nameserver, and if unsuccessful, initiate the specified dialup connection? I
could use the Task Scheduler to run the .bat file once every minute or so.

Thank you.
 
Re: auto-switch LAN to dialup?

In news:5kocasF4ncqeU1@mid.individual.net,
Gretch <gretchen@invalid.corn> wrote:

>> Properties in Internet Explorer > Connections > select "Dial whenever
>> a network connection is not present" ... and set the required dial up
>> as default
>
> Sorry, but that won't work, as proven last evening when weather
> interfered with the satellite reception on the other end. The LAN
> connection is fine, but the route to the destination is down 3 hops
> away. Even though "Dial whenever a network connection is not present"
> is checked in IE, the real-time application of primary concern has
> nothing to do with IE, so a manual dialup became necessary. We need
> to have an automated method for dealing with this issue, please
>
> Would someone be willing to suggest a .bat script that could ping the
> remote nameserver, and if unsuccessful, initiate the specified dialup
> connection? I could use the Task Scheduler to run the .bat file once
> every minute or so.
>
> Thank you.

The task is extremely simple in Unix/Linux using crontab (the following is
all on one line):

* * * * * ( if ! ( ping -c1 -w20 `awk '{print $2}' /etc/resolv.conf |
tail -1` ); then killall wvdial; sleep 3; /usr/bin/wvdial starband; fi ) >
/dev/null 2>&1

I assume that such a thing can be done by running a .bat file in the Task
Scheduler every minute? I'm not proficient in the batch commands and hope
that someone who is could assist me, please.
 
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