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Author Topic: wifi speed  (Read 5577 times)

kvdv

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  • Posts: 8
wifi speed
« on: December 03, 2008, 02:35:36 PM »

Hi,

At 802.11g you have a halfduplex stream of 54mbps which results in circa 3mb/sec.
The 802.11N is much faster but still when I download wireless I get no more than 2,5 to 3MB/sec.
Is this normal?

Thanks,
Kris
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joshua.davis

  • Guest
Re: wifi speed
« Reply #1 on: December 03, 2008, 03:47:52 PM »

Do you have more than one computer connected wirelessly?

If so make sure all of your computers that are connected wirelessly have an 802.11N Adapter or 802.11N Internal Adapter.

Here is a link for the reason why.

http://support.dlink.com/faq/view.asp?prod_id=2585&question=DWA-142%20/%20DWA-542%20/%20DWA-552%20/%20DWA-556%20/DWA-642%20/%20DWA-643%20/%20DWA-645%20/%20DWA-652%20/%20DSM-750%20/%20DAP-1555%20/%20DAP-1522

If that is not the case you may want to connect a computer directly to your modem and go to http://www.dslreports.com/speedtest?flash=1 and select the location closest to you and test your connection speed. It may be that your ISP speed is low.

I recently had this issue where my connection speed was changed by "accident" by my ISP. I was able to test it using the speed test.
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kvdv

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Re: wifi speed
« Reply #2 on: December 04, 2008, 07:37:49 AM »

Do you have more than one computer connected wirelessly?

-> yes

Quote
If so make sure all of your computers that are connected wirelessly have an 802.11N Adapter or 802.11N Internal Adapter.

-> There's a Playstation 3 on the LAN, which only supports 802.11g.  :(

Quote
If that is not the case you may want to connect a computer directly to your modem and go to http://www.dslreports.com/speedtest?flash=1 and select the location closest to you and test your connection speed. It may be that your ISP speed is low.


-> I'm not talking about the WAN speed, but the LAN speed.  I'm downloading at 3MB/sec from a local NAS device.  This should be much higher with 802.11N.  It seems it's only Wireless G ?


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Lycan

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Re: wifi speed
« Reply #3 on: December 04, 2008, 08:59:33 AM »

What encryption are you using? Does your computer have a 802.11N adapter? If so which one?
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Zonk76

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  • Posts: 9
Re: wifi speed
« Reply #4 on: December 05, 2008, 10:45:12 AM »

Do you have more than one computer connected wirelessly?

If so make sure all of your computers that are connected wirelessly have an 802.11N Adapter or 802.11N Internal Adapter.

Here is a link for the reason why.

I thought the DIR-855 dual band does allow parallel connectivity allowing full speed to N devices in 5GHz while slower G devices are running in 2,4GHz band? If your statement is true I am wondering why I just ordered a DIR-855...  :o
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Lycan

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Re: wifi speed
« Reply #5 on: December 05, 2008, 12:16:42 PM »

That link is incorrect. It's true if the adapters on the network can not all support the AES cipher that 802.11n requires.
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