Wifi Connection Dropping With Wireless Bridge on Network

SallySensation

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Dec 22, 2011
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I apologize in advance for any incorrect terminology. I have a Network set up in my home using an ASUS RT-N66U Dual-Band Wireless-N900 Gigabit Router (Operation Mode:Wireless router Firmware Version:3.0.0.4.376_3754)and a Motorola SURFboard SB6141 Cable Modem.

We have a couple wired connections into the router from PC's, one of which is a server running constantly. We also have several wifi connections (android phones, PC and Mac Laptop, etc.). We also have a Samsung smart TV which has a built in network card. We had been using it to connect to the network for a while, but the network card was extremely flaky. We were regularly experiencing connection problems. To resolve this, I purchased a TP-LINK TL-WR841N Wireless N300 Home Router, 300Mpbs, to use as a wireless bridge. Essentially it is now acting as my network card for the TV. That's all I need it for.

It works relatively well for the TV. Unfortunately there is something else going on now. It appears, when other devices are closer to the "bridge" router, they try to connect to that, and when they are closer to the main router they connect to that. It seems they are constantly struggling between the two and the connections are dropping. I notice this when streaming music from my phone. It will (not always) start stuttering. The stuttering always seems to go away when I unplug the "bridge" router.

the main router log is full of messages like this:

Apr 10 10:05:18 kernel: eth1: received packet with own address as source address
Apr 10 10:05:35 kernel: eth1: received packet with own address as source address
Apr 10 10:07:26 kernel: eth1: received packet with own address as source address
Apr 10 10:08:24 kernel: eth1: received packet with own address as source address
Apr 10 10:21:07 ntp: start NTP update
Apr 10 12:34:44 kernel: eth1: received packet with own address as source address
Apr 10 18:56:12 kernel: eth1: received packet with own address as source address
Apr 10 19:23:13 kernel: eth1: received packet with own address as source address
Apr 10 21:05:10 kernel: eth1: received packet with own address as source address

I don't know exactly what's going on, but that is my hunch. Any thoughts on how to resolve this? Thanks!
 

crozland23

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Sep 6, 2014
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Just a clarification, when you say bridge, you mean an extender? If so, then you might normally get that kind of connection since the device will automatically connect to the network closest to it. If you want to steadily connect to a specific network, you may consider forgetting the other network to avoid network interference.
 
That tplink device can only run in repeater mode it can not run as a client-bridge. It will always allow wireless device to connect to it. You would have to load dd-wrt so it could act only as a client. To see if the stuttering is the wireless try to connect the 2 router together with a cable just temporary and turn the wireless off on the second router. If the units are fairly close you could be getting interference since the tplink is retranmitting every packet it hears from the main router.

Those messages appear that you have a duplicate IP address. Make sure the tplink device does not have its lan address set to the same as the router. That is not caused by a repeater function unless something very strange is happening. It is really too bad it does not tell you the mac address of the device that is sending the duplicate ip.
 

SallySensation

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Dec 22, 2011
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Good question. I have it set up as an extender I think. I am using the exact same SSID and login for both routers, so that devices should seamlessly transition from one to the other. Maybe I'm better off using a separate SSID and forgetting that router that the TV is using as a bridge..
 

SallySensation

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Does that mean I cannot set a different SSID from my main router and forget it?

I assume this should work smoothly anyhow. I'll look into the other issue you mentioned. I think I only have one static IP address connected to the main router. Everything else should be dynamic and automatically assigned.
 

crozland23

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That is probably the reason why. You might consider changing the SSID for your extender to distinguish it from your main router's SSID. For example you can just put an -ext at the end of the SSID. That would usually minimize the conflict with the interference of your wireless signals caused by two identical SSIDs.
 
It may depend on the firmware levels on the tplink and if they added features. I think that router only support WDS mode. That is a repeater mode and it will send out a SSID. You have no choice but to use the same SSID.

There are more advanced firmware that let your run in client-mode. This mode only talks to a SSID like a end device it does not send out a SSID itself. There are also some that can use different SSID. I think your asus could do that if it was not your main router.

You may want to look to see if you can flash dd-wrt into your tplink or if there is newer tplink firmware. This stuff changes so fast that I can never keep track of which devices have which options.

I do know that the tplink you have with the default firmware can not run in client-mode.
 

SallySensation

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I seem to recall the option to have a different SSID, but I may be wrong. Either way, I'm willing to install the custom firmware if it can improve my setup. I'll give it a shot later today.
 

Jan Daniel

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Try changing the Lan IP of your 2nd router(the one which is client bridge routed) into the IP address of what has your primary router has assigned it.
I think it will fix the constant dropping of connection of your 2nd router.