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Author Topic: 40MHz won't work if "Enable Auto Channel Scan" is disabled  (Read 17135 times)

PJay

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40MHz won't work if "Enable Auto Channel Scan" is disabled
« on: August 29, 2013, 09:10:44 AM »
I've noticed that if I disable "Enable Auto Channel Scan", the router will use only 20MHz mode which is twice slower.
I didn't have this problem with Linksys ???
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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #1 on: August 29, 2013, 09:13:40 AM »
If you disable ACS, is the option to select Auto 20/40Mhz selectable or is it grayed out?

Can you post a picture capture of the WiFi Section>?
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PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #2 on: August 29, 2013, 09:37:59 AM »
I can still select 20/40MHz even if I disable ACS but it won't use 40MHz anymore.
It's only about 2.4GHz and not 5GHz.

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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #3 on: August 29, 2013, 09:46:21 AM »
What devices Mfr and model are you connecting to the router?

Any other WiFi routers in the area? Link> Use InSSIDer to find out. How many?
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Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.

PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #4 on: August 29, 2013, 09:50:22 AM »
I just placed my notebook with Intel 5100 in front of the router to check the speed.
I even tried other channels but no luck in manual mode.
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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #5 on: August 29, 2013, 09:56:19 AM »
You'll need to refer the Mfr of the Notebook and or Intel adapter to ensure it supports using 40Mhz.

I would update any drivers for that adapter as well.
Also ensure that any configuration options of that adapter also has user selectable features to use 40Mhz. I've seen it were some options are disabled with in the adapter configuration and needs to be enabled.

Try a different device with the 825 and test.

Be advised that this model router is not supported or marketed in the Middle East region so there could be some compatibility issues seen.

Recommended routers for your region can be found here:
Any other WiFi routers in the area? Link> http://www.dlinkmea.com/site/index.php/site/product_category/25/19/routers
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Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.

PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #6 on: August 29, 2013, 10:48:23 AM »
Fat Channel Intolerant is disabled and 2.4GHz mode is set to Auto instead of 20MHz
Most of the products are foreign here so no issue and the firmware is WW, worldwide
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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #7 on: August 29, 2013, 10:57:43 AM »
Does any other 40Mhz device work with the 825?
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PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #8 on: August 29, 2013, 11:15:58 AM »
Ok, I just tried TP-LINK TL-WN781ND to connect to 825, same problem like Intel 5100
40MHz only works if ACS is enabled or it won't work
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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #9 on: August 29, 2013, 11:23:42 AM »
This maybe a design factor or requirement with the FW. Regions are different as are the requirements. Older routers may or may not have this requirement as newer routers do.

I recommend that you phone contact your regional D-Link support office and inquire about the behavior of this for your region.

If it works with ACS then I would leave it enabled.

Good Luck.
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Cable: 1Gb/50Mb>NetGear CM1200>DIR-882>HP 24pt Gb Switch. COVR-1202/2202/3902,DIR-2660/80,3xDGL-4500s,DIR-LX1870,857,835,827,815,890L,880L,868L,836L,810L,685,657,3x655s,645,628,601,DNR-202L,DNS-345,DCS-933L,936L,960L and 8000LH.

PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #10 on: August 29, 2013, 11:33:19 AM »
Yes, I even checked with inSSIDer 3. With ACS, I gives two channels like x+y but without ACS, only one channel.
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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #11 on: August 29, 2013, 11:37:42 AM »
Ok, something with the behavior. Phone in and ask about it.
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PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #12 on: September 05, 2013, 03:32:56 AM »
Ok, I found the problem. 40MHz won't work on certain channels in manual mode.
For example, 6+10 works fine in ACS while in manual mode, it changes to 6 only.
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FurryNutz

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #13 on: September 05, 2013, 07:03:04 AM »
Thats probably true as it uses side channels for 40Mhz...
Does 1 or 11 work?
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PJay

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Re: 40MHz won't work if "Enable Auto Channel Scan" is disabled
« Reply #14 on: September 05, 2013, 09:04:51 AM »
Quote from: FurryNutz on September 05, 2013, 07:03:04 AM
Thats probably true as it uses side channels for 40Mhz...
Does 1 or 11 work?
Nope, doesn't work on 1,6,11 and a few more ???
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