Comments on: 802.11n http://www.lawrence.org.uk/blog/2009/11/802-11n/ Whatever I feel like writing about Wed, 03 Feb 2010 17:19:29 +0000 http://wordpress.org/?v=2.8.6 hourly 1 By: Jon http://www.lawrence.org.uk/blog/2009/11/802-11n/comment-page-1/#comment-11 Jon Wed, 16 Dec 2009 17:24:38 +0000 http://www.lawrence.org.uk/blog/?p=5#comment-11 well, the stuff is just as stable on 'n' as on 'g'. Surprisingly signal strength is worse - i though 'n' was supposed to be better ? Throughput is better than with 'g' even thoughj it's connecting at a lower bit rate - bullshit. The driver isn't reporting something correctly, there's no way an 18mbit connection equals a 48mbit. Interestingly swmbo got a new laptop yesterday with a 5100agn card in it. So I might get away with getting a 5GHz box. I need to look into dropping a cable to somewhere nearer rather than having the AP in the loft - perhaps I can hide one in the lounge :) well, the stuff is just as stable on ‘n’ as on ‘g’. Surprisingly signal strength is worse – i though ‘n’ was supposed to be better ?
Throughput is better than with ‘g’ even thoughj it’s connecting at a lower bit rate – bullshit. The driver isn’t reporting something correctly, there’s no way an 18mbit connection equals a 48mbit.
Interestingly swmbo got a new laptop yesterday with a 5100agn card in it. So I might get away with getting a 5GHz box.
I need to look into dropping a cable to somewhere nearer rather than having the AP in the loft – perhaps I can hide one in the lounge :)

]]> By: Jon http://www.lawrence.org.uk/blog/2009/11/802-11n/comment-page-1/#comment-5 Jon Tue, 24 Nov 2009 16:39:22 +0000 http://www.lawrence.org.uk/blog/?p=5#comment-5 hmmm. Not entirely sure this driver is overly stable. I might try and see if I can find and Atheros based card to play with. hmmm. Not entirely sure this driver is overly stable.
I might try and see if I can find and Atheros based card to play with.

]]> By: Jon http://www.lawrence.org.uk/blog/2009/11/802-11n/comment-page-1/#comment-4 Jon Sat, 21 Nov 2009 23:38:39 +0000 http://www.lawrence.org.uk/blog/?p=5#comment-4 hmmm. Just noticed that the 615 only has 100Mb FE so there's no point dropping it into the GigE network. How can they claim speeds upto 300Mb/s when the switch ports are only 100Mb/s, perhaps they expect you to wire in client machines and wireless servers, or is it just the 'normal' marketing bullshit - no prizes for a correct answer :) hmmm. Just noticed that the 615 only has 100Mb FE so there’s no point dropping it into the GigE network.
How can they claim speeds upto 300Mb/s when the switch ports are only 100Mb/s, perhaps they expect you to wire in client machines and wireless servers, or is it just the ‘normal’ marketing bullshit – no prizes for a correct answer :)

]]> By: Jon http://www.lawrence.org.uk/blog/2009/11/802-11n/comment-page-1/#comment-3 Jon Sat, 21 Nov 2009 23:27:28 +0000 http://www.lawrence.org.uk/blog/?p=5#comment-3 So yes there is something on the router that shows connection rates: Connect Time Mode Rate 0 days, 00:17:43 11n 117.0 So it looks like it's a reporting issue with the driver. If I get chance I'll drop it onto the GigE vlan and report back on the sort of throughput I'm seeing. I suppose I couldn't really care what the reported speed is, what matters is the actual throughput. So yes there is something on the router that shows connection rates:
Connect Time Mode Rate
0 days, 00:17:43 11n 117.0

So it looks like it’s a reporting issue with the driver.
If I get chance I’ll drop it onto the GigE vlan and report back on the sort of throughput I’m seeing.
I suppose I couldn’t really care what the reported speed is, what matters is the actual throughput.

]]> By: Jon http://www.lawrence.org.uk/blog/2009/11/802-11n/comment-page-1/#comment-2 Jon Sat, 21 Nov 2009 23:21:39 +0000 http://www.lawrence.org.uk/blog/?p=5#comment-2 So did it work ????? Well sort of is about the best answer I can give. Backports certainly did something - I still never get a connection about 38Mb/s but at least that's above 1Mb/s. Interestingly, iwconfig can still report 0Kb/s and still get a throughput of 3MB/s which is about as good as I've ever seen on a G network running at 58M/s. Now, I've had a lot of people telling me that 802.11n isn't supported at all by Linux - erm, bollox. It might not be connecting at 130Mb/s like if I reboot into windows but it is definitely connecting at 'some' level or another. I know it's connecting to 'n' as that's all the router is set to allow. So, is it just that the driver isn't reporting things correctly - now to find out if there's some way of seeing connection details directly within the dlink 615. So did it work ?????
Well sort of is about the best answer I can give.
Backports certainly did something – I still never get a connection about 38Mb/s but at least that’s above 1Mb/s.
Interestingly, iwconfig can still report 0Kb/s and still get a throughput of 3MB/s which is about as good as I’ve ever seen on a G network running at 58M/s.
Now, I’ve had a lot of people telling me that 802.11n isn’t supported at all by Linux – erm, bollox. It might not be connecting at 130Mb/s like if I reboot into windows but it is definitely connecting at ’some’ level or another. I know it’s connecting to ‘n’ as that’s all the router is set to allow.
So, is it just that the driver isn’t reporting things correctly – now to find out if there’s some way of seeing connection details directly within the dlink 615.

]]>