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Sonicwall NE Slow Speeds

Posted on 2013-01-06
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Last Modified: 2013-01-07
Hi,

I have a Sonicwall NSA240 which I have 2 SonicPoints NE's on.  What I'm running into is
I get slow speeds on any iPad's iPhones and Androids (Samsung Galaxy S3) connecting to the internet, while  I test on my PC using speedtest.net, I get 20Mb download and 2Mb upload.
(The results  on the iPad/iPhones is around 4-7Mb for same test - I make sure I test using the same servers)

I tried messing with all the advanced features on the Radio, tried going to Auto channel and Auto Radio Band (which going on 40Mhz yields VERY slow speeds, under 1Mb - but this is a known problem with apple products)  I dont have " Enable Aggregation " enabled or " Enable Short Guard Interval "  there are a bunch of other AP's in the area, but according to the Sonicwall RF Analysis page channel 8 is clean, however that doesnt really make much of a difference.  

Any ideas?  TIA!
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Question by:sbsc
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LVL 20

Assisted Solution

by:carlmd
carlmd earned 1500 total points
ID: 38750390
The Short Guard Interval is supposed to improve performance, but will cause problems if you have any devices that use b/g.

Does the problem occur if you use a windows pc to access the wireless network?
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Author Comment

by:sbsc
ID: 38750664
my windows PC is wired, but I can connect a USB wireless card to check,  what I have is iPhones, iPads and androids connecting,  and all of them have N, I tried switching the radio to N only, in fact that's what it's on now.   but I should be getting connectivity speeds of 100+ max 150mbps,  and it's connecting at 65mbps according to the android client and the sonicwall station status, and that wouldn't matter if at least I got the same bandwidth out, but as said above, it's not.
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LVL 20

Assisted Solution

by:carlmd
carlmd earned 1500 total points
ID: 38751203
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Author Comment

by:sbsc
ID: 38751242
Yes, I saw that, and if you take a look at my screenshots, I have it set as per that KB, and I may add that I didnt previously, that I'm sitting 6 feet away from that sonicpoint, so there isn't any interference.  However that performance is all around the same, even when I go to another location.  
Is this a sonicwall thing?  I've set up Cisco wireless solutions with no problem, and btw I got rid of a NetGear N900/WNDR4500 that had great speed at that same location, so it's not the location or interference.
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LVL 20

Accepted Solution

by:
carlmd earned 1500 total points
ID: 38751463
At this point it would seem that you have done everything right.

As a point of comparison, I have a site with two sonicpoint N's, and here is what they are showing at the moment on Station Status. All are set to 2.4GHz.

connect         Tx Rate            SS
24MBPS         54MBPS          36%
54                   36                    78

1                      54                    60%
1                      1                      60
54                    1                      60
54                    36                    78
24                    1                      78
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Author Comment

by:sbsc
ID: 38751507
Yes. I'm wondering if this is a sonicpoint thing, as I've been reading alot of bad things about them.  my statuses are showing at connect and transmit of 65Mbps but when I do a speedtest, at best I get 10Mbps while the desktop computer running (wired) windows 7 is at 20Mbps.  

I'll bring my laptop home today and try it, I have win7 on it, and see what I connect at and what speed I get, if that goes fine, then it's definitely a sonicwall/apple problem, but I also have a Samsung galaxy S3 that gives me the same results, so I'll have to see if indeed the laptop will be different.  

It's not the sonicpoint either as I have 2 of them and they both give the same result, and I have the latest firmware on it, sw_spn_eng_6.0.0.3_6.bin.sig, which I guess came with the sonicwall (SonicOS Enhanced 5.8.1.9-58o)

So far what would you say is the problem? sonicpoint hardware?
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LVL 20

Expert Comment

by:carlmd
ID: 38751654
It sounds like the Sonicpoint. Have you tried calling Sonicwall support?
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Author Comment

by:sbsc
ID: 38751711
No, that's my next step, after I do the test with my laptop.
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Author Comment

by:sbsc
ID: 38751780
For reference, do you have a connection to the internet faster than 20Mbps? if so, can you run a speedtest through any apple device and see what you get?
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Author Comment

by:sbsc
ID: 38753456
Hi carlmd, figured it out, someone connected a cordless phone base 2 feet away from the AP, looks like that had enough interference to cause that slowness. I moved it away, and right away the network cleared.  see attached.  the ipad has a tx speed of 241Mb now...
Ill award you the points as you were the only one kind enough to help! thanks,
sonicpoints.PNG
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Author Closing Comment

by:sbsc
ID: 38753457
when troubleshooting wireless networks always look for interference.
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