I have done the tests: When i am connected via my belkin 2.4ghz wireless 802.11b router, my download speed is about 5mbps and when i connect direct to my PC, the speed is about 10mbps. Anyone know why this is happening?
thank you
download speed slower via belkin 802.11b router
Jul 22, 2005
3 Replies
Yep. The maximum speeds for the various wireless modes are:
This is stolen from an Atheros PDF at:
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ros_range_whitepaper.pdf with some additions and corrections by me.
Non-overlapping Modulation Max Max Max Channels ------- | Link TCP UDP | | | | |
802.11b 3 CCK 11 5.9 7.1 802.11g (with 802.11b) 3 OFDM/CCK 54 14.4 19.5 802.11g only 3 OFDM 54 24.4 30.5 802.11g turbo 1 OFDM 108 42.9 54.8 802.11a 13 OFDM 54 24.4 30.5 802.11a turbo 6 OFDM 108 42.9 54.8Note that 802.11b has a maximum TCP thruput of about 5.9Mbits/sec with an 11Mbit/sec association. More commonly, the speed is about
4-5Mbits/sec.When you connect directly to an ethernet LAN port, you're either going at 10Mbits/sec or 100Mbits/sec, half or full duplex. No way I can tell from here with the minimal information you supplied. My guess is you're connected at 100baseT-FDX, but are limited to 10Mbits/sec thruput but whatever you're using for benchmarking.
If you want to persue such benchmarks, use a local machine, not over a cable modem or DSL modem. Make sure the machines inolved have sufficient horsepower to sustain a high traffic rate. Use IPerf for benchmarks:
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802.11b is slower.
Barry ===== Home page
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