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Router Switching IP Conflict

Tags:
  • IP Conflict
  • Routers
  • Wireless Network
  • Motorola
Last response: in Wireless Networking
March 22, 2014 3:06:31 PM

I have a Motorola SBG6580 as my main Wi-Fi Router/Modem then on the other end of my house there is a Netgear N150 Router with Ethernet cord running to it that has the same SSID/Password as the original Motorola Router to increase network signal. This works well except for when the connected devices are switching between the two routers, they switch but when reconnecting to the main router once I move closer to it they will not load anything on the internet and require me to disable then re-enable the Wi-Fi on that device it does keep the same IP address throughout all of the transitions. What could be wrong and how would I fix it? Thanks in advance for your help!

More about : router switching conflict

March 22, 2014 10:06:49 PM

So if I'm understanding this right, you have two different routers both configured to broadcast the same identical network?
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Best solution

March 23, 2014 5:21:32 AM

It in theory should work but as you find out it does not always work in practice. It is likely a bug in the driver in the PC or maybe the firmware of the router.

What is happening even though you have the same SSID and password the actual keys that are used between the your PC and the 2 different wireless devices are actually different. Part of this key negotiation includes the mac address of the router/ap. Normally the PC will detect the mac address of wireless it is connected to changed and renegotiate these keys...this generally causes a small 1 second or so glitch.

Now if as stated in the above post you have dhcp enabled on both routers then that is a huge problem you need to run the second router as a AP
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March 24, 2014 6:18:59 AM

bill001g said:
It in theory should work but as you find out it does not always work in practice. It is likely a bug in the driver in the PC or maybe the firmware of the router.

What is happening even though you have the same SSID and password the actual keys that are used between the your PC and the 2 different wireless devices are actually different. Part of this key negotiation includes the mac address of the router/ap. Normally the PC will detect the mac address of wireless it is connected to changed and renegotiate these keys...this generally causes a small 1 second or so glitch.

Now if as stated in the above post you have dhcp enabled on both routers then that is a huge problem you need to run the second router as a AP


DHCP is enabled on both routers, how would I run it as an AP? Thanks in advance for your help!
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March 24, 2014 6:40:19 AM

There is a sticky question on this forum. You cable it lan-lan, turn off the DHCP and assign it a non conflicting IP address is the main points
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March 24, 2014 7:04:24 AM

bill001g said:
There is a sticky question on this forum. You cable it lan-lan, turn off the DHCP and assign it a non conflicting IP address is the main points


So basically I run the ethernet cord from the Motorola Router/Modem to the Netgear N150 yellow plug in, then disable DHCP on the Netgear N150 and if the Motorola Router/Modem IP address for me to change it's settings is 192.168.0.1 and the Netgear N150 is 192.168.1.1 then I shouldn't have to mess with the IP addresses correct?
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March 24, 2014 8:43:18 AM

The ip needs to be in the same subnet if you want to access it. 192.168.0.250 or something would be better.

N150 is too generic they have a number of routers and are inconstant with the colors. There should be 4 ports the same color you want to plug into one of those.
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March 24, 2014 9:10:22 AM

If I did this they would be in an internet out port so what would it do? Also do I just uncheck use router as dhcp server in its menu?
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March 24, 2014 9:39:09 AM

Will you please tell me exactly what to do if I want to use the Motorola router/modem as dhcp server? I'm just confused because I do not know much about networking.
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March 24, 2014 10:07:41 AM

You want to cable it to the lan ports I can't tell you what color since they have a bunch of routers and the name isn't really n150. You want to hook it to the LAN ports the WAN port is not used when you run as a AP
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March 24, 2014 10:12:05 AM

bill001g said:
The ip needs to be in the same subnet if you want to access it. 192.168.0.250 or something would be better.

N150 is too generic they have a number of routers and are inconstant with the colors. There should be 4 ports the same color you want to plug into one of those.
Tell me if I am on the right track, I have the ethernet cord running from the Motorola SBG6580 Modem/Router (it is plugged into one of the the regular ethernet ports like you would plug a desktop into) to the Netgear WNR1000v3 (N150) Router and is plugged into the yellow WAN port on it that you would plug the ethernet cord from your modem into, they both have the same SSID and password, but when I disable the DHCP server from the Netgear router by unchecking use router as dhcp server I am unable to connect to it and I cannot give the router a different ip address because it says that it interferes with the dhcp server. Also I understand you say thet the WAN port is not used but if it is not then how would the router have internet access, or can internet travel to it through those ports too? There is probably something that i'm not doing but I do not know what. Thanks in advance for your help! Also here is a picture. http://imageshack.com/a/img844/1165/8hu4.jpg
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March 24, 2014 1:07:19 PM

Plug it into the lan ports on the netgear. It will pass though and use the Motorola to get to the internet.
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March 24, 2014 2:53:25 PM

bill001g said:
Plug it into the lan ports on the netgear. It will pass though and use the Motorola to get to the internet.


Thank you so much! This worked flawlessly and I now have internet access! Thanks again!
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