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Thread ID: 57676 2005-05-09 11:13:00 IP / DHCP question carlh (100) Press F1
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353683 2005-05-09 11:13:00 I seem to have a bit of a problem with the way my laptop interacts with the other 2 pcs on my home network. All are running XP Pro, and are networked through a Dynalink RTA770W Wireless ADSL Router.

On occasions the 2 pcs cannot see the laptop, and the laptop cannot see the 2 pcs.

I think the problem is that the laptop sometimes has two IP addresses in the router's DHCP table, one for the NIC and one for the wireless card. I guess this is because I connect by cable if I'm near the router, and wirelessly if I'm elsewhere in the house.

I've tried using "ipconfig /release local*" on the laptop, but discovered that this only works before I unplug the cable. Naturally it's after I've unplugged the cable and shifted to a nice comfy chair that the problem rears its head!

Is the answer simply to cut the lease time on the DHCP server right down? It's at the default of 1 day at the moment. Is there any reason why it can't be choppped back to 30mins? Or 10mins?

Thanks for your thoughts!
carlh (100)
353684 2005-05-09 20:02:00 Are you using a firewall on the other two pcs, if so have you allowed the ip (or ip range) that the laptop maybe using because the ips will proberly be different for each setup ie wireless or patch cable connection.

Another way round it maybe to assign a static ip to the laptop and allow that on the firewalls

To renew an ip on xp go to cmd prompt type in ipconfig /renew while sitting in that comfy chair.
beama (111)
353685 2005-05-09 21:21:00 Have you set up a Bridge between the wireless connection and the cable connection? That way the computer will only have one IP whichever way its connected Myth (110)
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