Simultaneous dual band 2nd modem access point set up

kevin13986

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Jan 26, 2018
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I have a 802.11ac simultaneous dual band primary router.

Im trying to setting up a asus router rt-ac51u (simultaneous active) an access point.

After changing ip on access point (router) and syncing the ssid's.

Do i still have to seperate the channels on 2.4g and 5g on both routers or can i leave the primary on auto and the asu router on access point mode(auto). Will i encounter problems with both being auto.

Kev
 
Solution
On the 2.4 you will get interference no matter what you do. To get the high speed on 2.4g you need to use 40mhz of bandwidth but there is only 60mhz total so you can not put 2 40mhz radios in it. You could if you were willing to pay the speed penalty set it to run 20mhz.

On 5g in most countries here are 2 blocks of channels that will take the 80mhz 802.11ac signals. I forget the exact numbers but one is around 40 and the other is over 100. There are some other blocks that might be possible to use and those ONLY work when the router is in auto mode but many routers do not support this. The router must detect and avoid weather radar, many manufacture just don't want to deal with it.

So in effect you can only have 2 routers...
On the 2.4 you will get interference no matter what you do. To get the high speed on 2.4g you need to use 40mhz of bandwidth but there is only 60mhz total so you can not put 2 40mhz radios in it. You could if you were willing to pay the speed penalty set it to run 20mhz.

On 5g in most countries here are 2 blocks of channels that will take the 80mhz 802.11ac signals. I forget the exact numbers but one is around 40 and the other is over 100. There are some other blocks that might be possible to use and those ONLY work when the router is in auto mode but many routers do not support this. The router must detect and avoid weather radar, many manufacture just don't want to deal with it.

So in effect you can only have 2 routers on 802.11ac. If you had a new tri-band router with 2 5g radios a single router could use all the avialable bandwidth.

If your equipment has the ability to turn down the transmit power you can try to reduce it a little bit to reduce the amount of interference.

I tend to not like auto because it will sometime change when you reboot the router and then you are trying to figure out why things worked fine before and now you have issues.
 
Solution

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