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Author Topic: 802.11n client maxing out at 63 mbps on DAP-1360  (Read 4350 times)

richard_f

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802.11n client maxing out at 63 mbps on DAP-1360
« on: November 25, 2011, 08:11:42 AM »

The client, a Kindle Fire, which supports 802.11n on the 2.4 GHz band, was maxing out at 54 mbps with a signal strength of Excellent, a few feet away from the device.  The 1360 is brand new, hardware rev B1, running firmware version 2.10.  The 1360 is in access point mode and is connected back to the router (a DIR-825) with a 200 mbps Netgear powerline adapter.  I get the same results when I test with Cat 5e.  I can see that it's connecting with 802.11n on the router.

I called support and the first thing they wanted me to do was to flash the firmware from 2.10 to 2.11.  Since there's nothing in the release notes for 2.11 that could effect this problem, I declined, not wanting to take a chance on bricking the AP for no reason.

So we started changing the wireless settings on the 1360.  The only thing that helped was changing the cipher from TKIP to AES.  That got the connection up to 63 mbps.

The mode is access point, autochannel scan is enabled.  802.11 mode is mixed G and N (it's worse with just N for some reason), transmission rate is auto, security mode is WPA2 enhanced (personal).

I'm going to bring an 802.11n laptop home from work to see if it's an issue that's specific to the Fire, but there's another post about the same issue on this forum:

http://forums.dlink.com/index.php?topic=37240.0

so I'm not hopeful that that will be the case.  Any suggestions would be much appreciated.



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FurryNutz

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Re: 802.11n client maxing out at 63 mbps on DAP-1360
« Reply #1 on: November 25, 2011, 09:38:34 AM »

What wireless modes is the 1360 running? Mixed?
Try single mode N?
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richard_f

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Re: 802.11n client maxing out at 63 mbps on DAP-1360
« Reply #2 on: November 25, 2011, 10:40:32 AM »

What wireless modes is the 1360 running? Mixed?
Try single mode N?

Thanks for your prompt reply. I was running mixed N and G.  I had tried just N before making the cipher change and it didn't help.  I just tried it again now that I'm using AES and no joy.  I still top out at 63 mbps.

Since changing the cipher got me another 9 mbps I wonder if it's the security mode overhead.  If it is though, I'm just going to have to live with it because I'm not going unencrypted or just running WEP.  I should be able to bring home a laptop on Monday for some more testing.  63 Mbps isn't bad though, it's just not what I thought I'd get running N.
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FurryNutz

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Re: 802.11n client maxing out at 63 mbps on DAP-1360
« Reply #3 on: November 25, 2011, 12:52:23 PM »

The cipher type can impact performace. AES has the best performance. It also depends on the connecting device and that modes, speeds and cipher types it supports as well will dictate how it connects. WPA/WAP2 is perferred as its most secure.
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