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Old 12-18-2006, 09:36 AM
Jeff Liebermann
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Default Re: strange Laptop to Router thruput speeds

"umo" <shoreke@yahoo.com> hath wroth:

>Server side: iperf -s
>
>Client side: iperf -c 192.168.1.102...1st test
>Client side: iperf -c 192.168.1.100...2nd test


So .101 is the laptop. Which is the wired desktop?
Do you have TWO desktops?

>Wireless connection speed 161Mbs.


TomsNetworking got about 75 Mbits/sec thruput on a simulator with the
WRT-300N:
<http://www.smallnetbuilder.com/wireless/wireless-features/draft_11n_revealed_part1/page6.html/>
<http://images.tomshardware.com/2006/06/01/draft_802/draft_11n_all_dn_throughput_compare_annotated_big. png>

>Test is from laptop to TCP wired desktop.


Which is the desktop. .100 or .102 ? Do you have two desktops?

>Latop within a foot of router results in 40Mbs thruput.
>
>Wired connection is 100Mbs.


Did you measure the direct connect speed? See my results I just
posted.

>Router was rebooted before 2nd test resulting in assignment of a
>different IP address.


Muddle? The router is suppose to have a fixed IP address and assign
IP's to the clients. What has a different IP address? I can't tell
from your statement.

Sorry to be a pest, but I'm lost with 3 IP addresses and no clue what
address belongs to what device. You also seem to have one extra
device.

>802.11b compatibility mode is enabled. Turning it off results in very
>slow speeds. Not sure why since I have Linksys wireless-N notebook
>adapter and Linksys wireless-N router.


That's all wrong. Turning off 802.11b compatibility should improve
the speed, not reduce it. No clue why, but my guess is that you have
some kind of setup, config, or wiring problem.

--
Jeff Liebermann jeffl@comix.santa-cruz.ca.us
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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