Ip Address Changes

[tim.cheshire]

I'm using mobile broadband on a Dell (Vista) with a built in broadband card and thier Control Point connection manager.

I've noticed that it normaly connects with a 10.xxx.xxx.xx ip address but switches to a 169.xxx.xxx.xxx number every hour or so. When it switches to the 169 address I loose connectivity and only by resetting the connection or re-booting the PC can I get it back to a 10. number and working again.

Can anyone tell me what's happening, why it changes and why it stops working?

Thanks,

Tim

[bacupian]

I'm using mobile broadband on a Dell (Vista) with a built in broadband card and thier Control Point connection manager.

I've noticed that it normaly connects with a 10.xxx.xxx.xx ip address but switches to a 169.xxx.xxx.xxx number every hour or so. When it switches to the 169 address I loose connectivity and only by resetting the connection or re-booting the PC can I get it back to a 10. number and working again.

Can anyone tell me what's happening, why it changes and why it stops working?

Thanks,

Tim

The 10. addresses are those normally allocated by Vodafone, the 169. is a reserved (default) address that's
used when you have no connection. You should have some indication of lost connection and just have
to reconnect rather than need to reboot first.

I can't guess as to why you're getting disconnected though.

David

[Retired-MattyD1]

Hi TCH

Thanks for the post, although I'm sorry to see you're having some issues with the connection.

Give the suggestion from bacupian a try, and try the reconnect instead of the reboot.

Is it always in the same place that you get the disconnection issue or doesn't it seem to matter?

If it's the same place can you give me the postcode so the area can be checked out for you.

Many thanks

MattyD

eForum team

[tim.cheshire]

Matty/bacupian,

Thanks for your responses.

I get no indication of a disconnection. I normally notice as Outlook reports a failure to my exchange server. Dell connection manager shows connected but the ip address has changed to 169. (It's good to know that this is a default address.) I try disconnecting and re-connecting but this doesn't normally help. I've also tried ipconfig /release or /renew but this doesn't work either (obvious if I've lost the connection).

This is a very new laptop and I've upgraded all drivers etc to the latest spec.

Maybe I'm just loosing the signal. I thought having a built in modem with a larger aerial would be better than a dongle so paid the extra.

Post code is EC2N 1DB, Central London; laptop is by the window.

[bacupian]

Matty/bacupian,

Thanks for your responses.

I get no indication of a disconnection. I normally notice as Outlook reports a failure to my exchange server. Dell connection manager shows connected but the ip address has changed to 169. (It's good to know that this is a default address.) I try disconnecting and re-connecting but this doesn't normally help. I've also tried ipconfig /release or /renew but this doesn't work either (obvious if I've lost the connection).

This is a very new laptop and I've upgraded all drivers etc to the latest spec.

Maybe I'm just loosing the signal. I thought having a built in modem with a larger aerial would be better than a dongle so paid the extra.

Post code is EC2N 1DB, Central London; laptop is by the window.

There are many reports in forum where problem is along lines of "unable to reconnect as system
beieves it's still connected". This isn't just with windows with VMC but happens with other connection
mismanagers. I use Ubuntu and NetBSD. Ubuntu has its own connection manager that often suffers the
same problem. I've swapped to using a standard dialup connection method same as I've used on NetBSD
and since then haven't had a failure. I don't use Windows(XP) often enough and haven't seen the
problem with out of date VMC-Lite so just refuse popups suggesting to update.

You may want to try setting up a DUN connection in windows, copying from the one setup by VMC or
following the guide if you can find it on Vodafone help.

David