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802.11g speeds vs Lan

 
 
tripdubAndy
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      12-16-2005, 11:17 PM
I've got an 11g router with a 5mbs net connection from the cable
company.

when i connect directly (lan) to my router, i can test net speeds at
4.5Mbps .. (i use www.speakeasy.net). however when i use my the
wireless connection on my laptop & i retest the speed, i get 1.2Mbs.

what can i do to increase my wireless speeds?

What i've done so far:

1. changed channels from 1-11 to find one that no one else is using ..
all gave same slow speeds
2. made sure both laptop wifi & router are set to 802.11g only.
3. signal strenght is full (ie., all 5 bars ~ 54Mbps, on winxp's
Wireless Network Connection Status window)
4. i've removed any other wireless devices (cordless phones, etc) in
the near vicinity

i'm using a linksys 802.11g router WRT54GP2. (phone ports r disabled)

thanks for all ur help!

 
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Bob Willard
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      12-17-2005, 02:03 PM
tripdubAndy wrote:

>I've got an 11g router with a 5mbs net connection from the cable
>company.
>
>when i connect directly (lan) to my router, i can test net speeds at
>4.5Mbps .. (i use www.speakeasy.net). however when i use my the
>wireless connection on my laptop & i retest the speed, i get 1.2Mbs.
>
>what can i do to increase my wireless speeds?
>
>What i've done so far:
>
>1. changed channels from 1-11 to find one that no one else is using ..
>all gave same slow speeds
>2. made sure both laptop wifi & router are set to 802.11g only.
>3. signal strenght is full (ie., all 5 bars ~ 54Mbps, on winxp's
>Wireless Network Connection Status window)
>4. i've removed any other wireless devices (cordless phones, etc) in
>the near vicinity
>
>i'm using a linksys 802.11g router WRT54GP2. (phone ports r disabled)
>
>thanks for all ur help!
>
>
>

That is poor. I get pretty close to the same download speeds (~400KB/s)
using either wired or wireless connections, and I'm only using 802.11b
thru a Linksys WRT54G to my 4 Mb/s broadband connection.

I suggest checking your net params on the wireless PCs, using DrTCP
(available from http://www.dslreports.com/drtcp). You may have a RWIN
that is too small (used to be a common problem), or a MTU mismatch;
compare the values that DrTCP shows on your wireless connection with
those it shows for your wired connection.

--
Cheers, Bob
 
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Jeff Liebermann
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      12-17-2005, 03:53 PM
On 16 Dec 2005 16:17:03 -0800, "tripdubAndy" <(E-Mail Removed)>
wrote:

>I've got an 11g router with a 5mbs net connection from the cable
>company.
>
>when i connect directly (lan) to my router, i can test net speeds at
>4.5Mbps .. (i use www.speakeasy.net). however when i use my the
>wireless connection on my laptop & i retest the speed, i get 1.2Mbs.
>
>what can i do to increase my wireless speeds?
>
>What i've done so far:
>
>1. changed channels from 1-11 to find one that no one else is using ..
>all gave same slow speeds
>2. made sure both laptop wifi & router are set to 802.11g only.
>3. signal strenght is full (ie., all 5 bars ~ 54Mbps, on winxp's
>Wireless Network Connection Status window)
>4. i've removed any other wireless devices (cordless phones, etc) in
>the near vicinity
>
>i'm using a linksys 802.11g router WRT54GP2. (phone ports r disabled)


I don't have the slightest idea what is causing the speed problem.
However, I do have some additional tests which might help assign the
blame. The basic idea is to identify the component of your wireless
system by substitution. Some questions:

1. Can I assume that you're using the same laptop to test the speeds
with both wired or wireless? If they are two different machines (one
wired and one wireless), could you retest using just the wireless
laptop?

2. What happens when you try this wireless laptop with a different
wireless router? Can you drag it to friends or free wireless hotspot
and see if you have the same speed issues? It might be best to do the
speed testing using a local machine directly connected to the wireless
router so that it will be very obvious where the bottleneck is
happening. Test it both ways, wireless and wired. With 802.11g, you
should get file transfer speeds of about half of the connect speed.

If the laptop does the same thing at a friends or at a hot spot, then
I suspect there is something broken in the wireless card on the
laptop. Could I trouble you to identify the laptop and it's wireless
card?

3. Duz the wireless laptop have a manufacturer supplied utility or
config page that shows connection speed, error rate, retrans, and
statistics? If so, are you getting a good solid high speed connection
or are you getting substantial errors? Never mind the "5 bars"
indication. Check the errors.

4. Do you have a different wireless access point available? If so,
try to substitute for your existing WRTGP2 and see if that's where the
problem is hiding.

5. Again by substitution, can you borrow a known working laptop from
someone and repeat the test? If this laptop does the same thing, it's
either the wireless router or a serious interference problem. If not,
the problem is on the laptop.

--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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tripdubAndy
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      12-18-2005, 08:21 PM
Thanks Jeff & Bob ~ Didn't think I'd get responses )

Laptop: Dell D610
Wireless Card: Built-in Intel(R) PRO/Wireless 2200BG Mini PCI
Got a pretty vanilla D610

Thanks for asking .. I am testing this using wired & wireless off the
same laptop ..

I've tried wireless devices .. Motorola pc cards, other dell built-in's
& I've got the same (pathetic, it seems) 1.5mbs connection over the
wireless.

I'll try the tests off the site Bob .. Happy to know my exper. is an
anamoly, not a feature.
thanks again ..

 
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Jeff Liebermann
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Posts: n/a

 
      12-19-2005, 12:19 AM
On 18 Dec 2005 13:21:07 -0800, "tripdubAndy" <(E-Mail Removed)>
wrote:

>Thanks Jeff & Bob ~ Didn't think I'd get responses )
>
>Laptop: Dell D610
>Wireless Card: Built-in Intel(R) PRO/Wireless 2200BG Mini PCI
>Got a pretty vanilla D610


Intel has some updates to their Proset utilites and drivers. One of
the old bugs with the 2200BG is that it will reduce speed from
54Mbits/sec down to 1Mbit/sec and stay there until rebooted. I don't
know if this was ever really fixed as it only happens on some
configurations and Intel claims it's not reproduceable. This might be
what's happening. Check your connection speed.
http://forum.notebookreview.com/show...2&page=1&pp=10
The above thread is on Version 8 Proset and may not apply to your
current driver which is probably Ver 9.

http://www.intel.com/network/connect...t_software.htm
http://support.intel.com/support/wir...00bg/index.htm
http://support.intel.com/support/wir.../cs-010623.htm

>Thanks for asking .. I am testing this using wired & wireless off the
>same laptop ..


Ok, then it's not the laptop and probably something related to the
wireless. I can't tell where in the wireless system except by
substitution. It still might be buffer and RWIN settings. Using
DrTCP is a good suggestion.

>I've tried wireless devices .. Motorola pc cards, other dell built-in's
>& I've got the same (pathetic, it seems) 1.5mbs connection over the
>wireless.


I'm trying to decode what you're saying here. Do you mean that you've
tried other laptops with the WRT54GP2 and are having exactly the same
problem? If so, then it's probably something broken in the WRT54GP2.
If it means you've tried other wireless cards in the D610 laptop, then
it still might be the Windoze buffer and RWIN configuration or driver
issues.

Any chance you have the data rate in the router fixed to perhaps
5.5Mbits/sec or set to 802.11b only? That would certainly slow things
down. (The access point controls the data rate). The usual default
setting is "auto".

>I'll try the tests off the site Bob .. Happy to know my exper. is an
>anamoly, not a feature.
>thanks again ..


--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
 
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