oh win7, why wont you assign me the correct wireless ip address!!?

skanky · 19 Dec 2010 at 12:21

i have a netgear dgn1000 which i have set up to dole out preset ip addresses based on the mac address of the machine connecting..

simple enough as the XP and 7 machines (when using a cable, XP is fine no matter what) have no problem with this, it picks up the correct address without any further input from me as it gets its info via DHCP. however, the two windows 7 laptops do not always want to play ball when connecting wirelessly even with correctly reserved addresses on the router's config page.

for example, one of them is assigned 192.168.1.9 for the laptop's wireless mac address however when connecting it seems to sometimes randomly take an already assigned (i've seen it take 192.168.1.5) but not switched on address in the same 192.168.1.xx range and 255.255.255.0 subnet.

i can fix this by manually setting it in the wireless connection's properties but that'll mean i need to put it back to DHCP when i go elsewhere, which i'd rather not have to do.

any ideas, the win7 machines are x64 professional.

Burnsy2023 · 19 Dec 2010 at 12:56

When they get the weird IPs, can you confirm that they were leased by the DHCP server on the router? If so, I'd suggest the issue was with the router and not Windows.

skanky · 19 Dec 2010 at 14:35

its not a weird ip like a 169.xxx.xxx.xxx address, it belongs in the 192.168.1.xxx range i have defined, its like its somehow overriding the router's assignment and taking its own.

when it does "steal" a different IP, i have full connectivity etc, the problem comes about when the machine who's IP has been stolen, comes onto the network but cant.

i've had that with different netgear routers (dg834/dgn1000) and windows vista/7.

Burnsy2023 · 19 Dec 2010 at 14:38

skanky said:
its not a weird ip like a 169.xxx.xxx.xxx address, it belongs in the 192.168.1.xxx range i have defined, its like its somehow overriding the router's assignment and taking its own.

Well that's what I want to check. Is it 'stealing' it or is it still being assigned it? If the ipconfig/all shows that the DHCP server has leased the address then it's not a Windows issue.

skanky · 19 Dec 2010 at 14:43

i'll see if i can get it to steal an address again, what specifically am i looking for in the ipconfig /all ?

skanky · 19 Dec 2010 at 15:24

hmm, this time on reboot, it seems to have given me a 169 address, whats at fault the laptop or the router?

Ph4lanx · 19 Dec 2010 at 15:27

Software firewall on the laptop?

Burnsy2023 · 19 Dec 2010 at 15:50

skanky said:
hmm, this time on reboot, it seems to have given me a 169 address, whats at fault the laptop or the router?

That means the machine can't get an IP from the DHCP server. There could be several reasons for this, but it's usually server side.

skanky · 19 Dec 2010 at 15:54

ph4lanx: nope, nothing other than the standard win7 "firewall" but have not added anything firewally.

burnsy2023: my router acts as the DHCP server, the only thing i can do (apart from define the static ips) is change RIP direction/version (currently its "none/rip-1") and change the range it can give out which is 192.168.1.1 to 192.168.1.253, the router is 254.

bledd · 19 Dec 2010 at 16:01

Are you 100% sure you've set the wireless MAC address and not the ethernet port MAC address

skanky · 19 Dec 2010 at 16:17

yep deffo

im sure of that as i've set both to mac devices on the laptop with their own different ip.