LAN not working

March 18, 2009 at 10:04:20
Specs: Windows XP
I use a BT 802-11n modem router for ADSL
PC1 conects to Router by network cable
PC2 conects via wifi
Laptop connects via wifi
This works
Now connect PC3 to switch and PC2 to switch and setup fixed IP of &
The 2 PCs communicate and Skype works on PC2.
IE & Firefox won't work on PC2 unless I undo the fixed IP address of the LAN.

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March 18, 2009 at 10:13:30
Why not use DHCP - its a whole lot easier and far less hastle than using fixed IPs.

There is a good chance that is the IP address of the router and has already been allocated.

With the BT Home Hub, which I assume is what you are using, you can reserve particular IP address to particular computers if for some reason they must have specific IP addresses.


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March 19, 2009 at 08:22:03
Thanks Stuart for the speedy reply.
The reason I wasn't using DHCP is that the DHCP server is the home hub to wich PC3 is not connected either wirelessly or wired.
If I fit a wifi dongle to PC3 and set "obtain IP address automaticaly" then it does work. I don't really want to do this as PC3 is intended for network storage and doesn't require internet access.
Yes my choice of IP addresses wasn't clever but there were no conflicts at the time. I've set the addresses to & and this seems to work.


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March 19, 2009 at 08:48:19
Before statically assigning IP's, check your DHCP scope and ensure the IP's you use are outside the scope.

When statically assigning ensure you give all the correct information including:
Subnet Mask
DNS address
Gateway address

If you get the DNS wrong, or forget it, you won't be able to surf via http.

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March 20, 2009 at 06:39:47
Thanks for the info but as I'm only using the static address for local PC to PC work and am using DHCP to connect to the home hub for internet this isn't a problem. It's all working fine now that I've assigned the static IP outside the range assigned by the Hub.


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March 20, 2009 at 07:27:52
It's all working fine now that I've assigned the static IP outside the range assigned by the Hub.

Good to know and thanks for getting back to us and letting us know what worked.

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