Router gives wrong IP to Wireless stuff

FatRakoon

FatRakoon

FatRakoon

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This is one that has bugged the heck out of me for a few weeks now.

The router is an ASUS N55

The devices that are connected to the router through Ethernet, all connect just fine, and are given their IPs as normal.

However...

Quite often, when I connect via Wireless, they seem to be given the wrong IP?

Even weirder, is that they see the wireless network, I tell them the password, and they connect and they say everything is good, and they are seemingly given a good IP, but its wrong, and the default gateway is also wrong.

i.e

My Windows Phone

Connected etc, but its IP is 192.168.0.147
It says the gateway is 19.168.0.1

But its 1.1 NOT 0.1

So, the third number is always a ZERO instead of a 1

I have had this on everything wireless, while its never done it before?

With Laptops, I was able to manually setup the network to gedt it to connect, and with my Windows Phone ( 535 ) and my Samsung Note 3, they are both currently working as they should be, as is my wifes Samsung S3, however none of my family's phones are working on it. My youngest son has the 535 the exact same as mine, and theyt are identical in every way, but I cannot get his to work?

It started doing this about 2 weeks ago ( about ) and I am sure it must be the Router itself, but I dont know?

I am also using a Netgear Modem router as a switch, and its WIFI was indeed on 0.0 however, I have disabled the WIFI on it, and I have fully shutdown and started everything back up, just in case they were conflicting, but its not helped.

I have also done a backup of my settings for an older config, and I have also done a full factory restore and manually set the router up again, and has not helped either?

I dont really know what else to try?

Any ideas will be fantastic.
 
as above, sounds like you have two dhcp servers running. Make sure the second router is connected via it's lan port and ensure the dhcp server is disabled (don't use the wan port at all).

Also give the second router an ip address different from the gateway but still in the same subnet i.e 192.168.1.2
 
Oh holy moly.

Ok, well, I am mostly sure that I have disabled DHCP.

I know the ASUS is 1.1 and the netgear is 1.100

I think that somehow the netgear went back to 0.1 perhaps?

Now, I am sure that what I did, was manually set the netgear to an IP on the same subnet... Im sure that I set it to 192.168.1.100 actually, and that since the XBOX, SKYTV and the MediaPC are all on Ethernet, and that the 4th ethernet port went straight to the homeplug, and they worked fine, and as I said EVERYTHING works fine through ethernet actually, I thought that it was all ok?

The Wireless of the Netgear WAS enabled and so I have switched that off.

It made zero difference and so just now I once again turned it all off and then back on, bt left the netgear off

Wireless is all working perfectly now.

I will try to re-enable the netger ( WITHOUT ITS WIFI ) and see how that goes?

It should be good, but shy it did this I dont know?

I have NOT checked the settings on the netgear yet. I will do that shortly when I tuirn it back on.

Thanks guys.
 
it could be something else, all netgear routers i'm ware of use 192.168.1.1/24 same with asus routers too, so the settings would have have to have been manually changed to the 192.168.0.1/24 subnet.

It might be worth reseting everything to defaults and starting again one at a time.
 
The Netgear may have a static IP of 1.100, but the DHCP server can still be enabled. Turning the wifi off will not turn off the DHCP server, other devices will still query it for an IP no matter how it's connected to the network.
 
Yes, I did manually set the IP of the netgear, as I said, to 1.100
And I did turn DHCP to OFF so the ASUS was the sole controler of the network.

I wanted the Neatgear to act as a 4 port switch and nothing more.

The annoying thing is that it did work and it worked great for a while and it was only 2 weeks ago that I started to have these issues.

Well, not started but rather they either just happened suddenly, or more likely, is that I just noticed them.
 
Do you have any Powerline adapters?

However unlikely it may seem people have managed to interconnect with their neighbour's Powerline networks. Once you do there's a second DHCP server available.

It usually happens because people plug them in and don't bother to set the encryption.
 
For now..

Ditch the homeplug. Completely reset both routers. Only have DHCP enabled on one of them.on the second router, don't use the WAN port. Only use the switch ports.
 
Ok, well as I said, the netgear was only ever used as a switch. Its a modem and so it has no WAN port, it has its RJ45 and the 4xCAT5 ports.

As for DHCP, this is OFF.

Now, I was getting seriously confused about things, I have been switching the routers both off entirely, and starting the asus back up but not the Netgear and this has seemed to cure it.

So... I got the boys to get teh 5 port from the attic as I cannot go into the attic anymore and they have been using that since yesterday and guess what?

Its still doing it... So after all that, it has NOTHING to do with the netgear after all??

Ok, so the Homeplugs have been mentioned a couple of times now, and as it just so happens, my son said that his stopped working and he has swapped his with his sisters. She now whines and so I have given her one of the older 200MB ones.

So, I wil indeed remove the home plugs for the time being.

Does the XBOX 720 have Wireless?
My daughters PC I will just give her a USB dongle and the Media PC is here with me and so I will put the card back in, and Sky obviously has WiFi.

Lots to do then... I will update you when I know more... Which will be interesting cos Im still no better off than when I first had the issues but now Im thinking its the ASUS??

Its set up as 1.1 and it while it remembers the IP of all the devices that have connected before, when it assigns new ones now, it defaults to 0 instead of 1

Another quick solution would be just to swap the ASUS only and see how everything else goes? - I will do that first actually... It will be the easiest solution surely?
 
what isp do you have? if it's vm or another isp provided router have you made absolutely sure either the router is switched into bridge mode and the wifi is definately switched off.

I know virgin media use a 192.168.0.1/24 subnet on their superhubs. You need to go through your network one step at a time as there clearly is another dhcp server giving out ip's.
 
Network Map - Sure.
This is an old image, but the network is the same setup.

dwCr4A7.jpg


What ISP.
Its SKY.
My router however is my own shop-bought ASUS
I have plopped the Sky router back on for a bit.
 
Just notice some changes...

The HALLWAY WIFI REPEATER is NOT on there.
The Linksys was changed to the Netgear some time ago.
 
I see you have a wifi repeater. Have you checked the settings on there? Some usually will also have an option to have its own DHCP server.

EDIT: Nevermind saw your new post :p.

What make is the switch in the attic?
 
Last edited:
The attic switch, has NOT been used for ages.
I have had an accident and I am entirely unable to go upstaris and so thats been out of the scene for a while.

The attic stuff has NOT been in play at all and has nothign to do with this.

I should do a more up to date plan of the network as-is really

Erm, the attic stitch, is now down here and is in place, instead of the NETGEAR.

The ASUS has for the moment, been replaced with the Sky router.

I am doing this, as a temporary measure. I want to know that the HomePlugs are not the issue, or rather they are not DIRECTLY the issue.

So, before I remove them from the situation, ( which will be a bit of work for me to do, AND to still have internet access for the rest of the house ), I have decided to try the easier steps first.

One of the most handy things that I have with the ASUS, is that once it assigns an IP to a device, it keeps it.

Even after I add remove, kill off, and then re-add a device, if it was 69 before, it will be 69 now... I find that extremely useful rather than other routers I have where is simply assigns the next free IP, and the devices can be aby number each time you start things back up!
 
Unless you're deliberately using DHCP reservations (via the MAC address) there's no guarantee that you'll get the same device IPs.

With the Powerline adapters take the simple step of using your own encryption keys. If you are cross connecting with another local Powerline network it'll fix it.
 
Personally, I'd be ditching all the homeplugs and running ethernet to each device. Zero power usage and 100% speed with zero downtime.

I'd also use one central switch instead of multiple small switches.

I'm not a fan of using routers in non-router mode. You can get some very odd behavior from them, especially cheaper models.


-Also, the hallway wifi repeater, what make is this? How is it configured? does it have a DHCP server?
 
BoatyMcBoatface said:
-Also, the hallway wifi repeater, what make is this? How is it configured? does it have a DHCP server?
Click to expand...

Already stated in an edit it's not in use any more.

Personally I would be tempted to have only one home plug per room, connected to a small switch instead of multiple powerlines, and try use a dedicated cable if possible.

Another note, have you tried entering 192.168.0.1 in the browser to see if it takes to you a device web page? Or even pinging it?
 
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