Wireless Speed

Hardwired connections remain solid and fast while the wireless clients fluctuate wildly from 0.15 or so to 15Mbps. The Netgear N750 is setup as an access point only with a Cisco ASA5505 handeling the router functions. If plugged directly into the N750 the speed is solid and fast, the ISP speeds are 30 up and down via Hardwire and much slower via wireless.
Andrew FairAsked:
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Craig BeckCommented:
So you definitely have interference issues then.

Can you ping the AP when you're just connected to it (not moving any traffic).  What response times do you get?
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Craig BeckCommented:
Interference is usually the issue.  Can you run something like Acrylic Free Wifi on a laptop and post what you see in an area where Wifi is particularly poor?
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Andrew FairAuthor Commented:
I have been running Acrylic and noted our broadcast is within a +or- of 10% ie -20 to -30, it's the internet speed thats all over the place. Acrylic-Capture.PNG
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Craig BeckCommented:
There's a fair bit of RF there.  Can you show the 2.4GHz APs Channels tab too please?
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Andrew FairAuthor Commented:
Capture1.PNG
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Craig BeckCommented:
You've got at least 2 other sources of RF there on the surrounding channels to your AP.

If you set that AP's channel to 11 does it improve?
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Andrew FairAuthor Commented:
I've tried different channels and turning on\off the 20\40 coexist feature. no luck there
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Craig BeckCommented:
You definitely don't want to use the 20/40 coexist feature on the 2.4GHz band.  That will cause more interference issues.

What is the PHY rate you're connecting at (the link speed as indicated by the NIC)?
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Andrew FairAuthor Commented:
72.0 Mbps
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Andrew FairAuthor Commented:
CapturePing.JPG
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Craig BeckCommented:
Hmmm ok... was that while connected wirelessly?
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Andrew FairAuthor Commented:
Yes, that was connected wirelessly.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Are you using the 5GHz signal or the 2.4 GHz signal? I live in NYC and my 2.4 GHz spectrum has 30 (I counted) total access points... my speeds when connecting at 2.4 are LUCKY to be 2 Mb.  and thats when I'm 8 feet away with nothing between the laptop and the access point). If I connect at 5 GHz, my speeds are well over 30 Mbit.

Bottom line, wireless is subject to interference - change the channel (try them all, though generally there's a 4-5 channel overlap) or change out the wireless NIC in your device with one that supports 5 GHz and if necessary, buy a router that supports 5 GHz.
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Andrew FairAuthor Commented:
Thanks for the input Lee, the Netgear N750 is running 5g with the 2.4.
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