Wifi Network a/b/g corrupted during evening while n wifi perfect

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thelastcenturion

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Jul 24, 2011
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Symptoms
  • ■ Max 10mbps down will drop to basically zero; max 1mbps up relatively stable
    ■ Wireless items during certain parts of the day will drop in bandwidth
    ■ Speed tests show erratic spikes and drops, signal is unstable/corrupted/weak
    ■ Computers/gaming systems connected to router AND connected wireless using N-wireless via Ethernet do not experience these issues.
Network components
  • ■ Netgear N600 Wireless Router
    ■ Netgear WN2000RPT Wireless Extender
    ■ Various laptops, smartphones
Things done
  • ■ replaced/upgraded wireless parts
    ■ reformatted computers
    ■ called ISP, ping test, even higher level technicians to check the line
    ■ Wireless Routers of various brands tried: D-link, Netgear, Belkin
    ■ ruled out any electronics in home as source
    ■ problem began this January; previously had no problems
    ■ wireless in area show extremely weak signal BHN*...* from ARRIS group and Hon Hai Precision; origin is 3 house away and weak signal continues until door.

PLEASE HELP. AT MY WITS END!
 
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Tabris DarkPeace

Tabris DarkPeace

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Jul 3, 2013
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During the evening do you have any monitors and/or televisions in use -especially Dell dual monitor set-ups- that are not in use during the day?

Have you disabled Green field mode in the driver on all 802.11n devices?
- There's a few other driver options you can try toggling depending upon the WiFi chipset that you're using; the ones to try are fairly obvious and you can always reset to default and reboot if you make it worse.

- There's the long vs short/auto...

- If any devices on your WiFi are using WEP and/or WPA-TKIP all, or a large part of, your WiFi network may drop to 54Mbps (shared by all devices, which is a really shitty protocol and may bombard the router with I/O slowing the network to a crawl).

- You may want to look at QoS options on your router(s) and associated devices.

Which wireless chip-sets are you using on all devices in use on your WiFi, is there more than one machine on YOUR WiFi network?, do your neighbours have WiFi networks within range (hidden SID or not), and what wireless router(s) are you using?

Are you limiting your WiFi network to 5 devices, or less, via the devices web interface?
 
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thelastcenturion

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  • ■ No Dell dual monitors, other than that, monitors and televisions that are in use at night are the same as those during the day

    ■ There is only one 802.11n device and its off most of the time; does not seem to affect the wireless

    ■ Don't know how to really answer this because pc+xbox360 connects to netgear wifi extender via ethernet, the rest are smart phones that never gave us problems before, same with our 2 laptops, seems pretty much industry standard stuffs…

    ■ The Netgear N600 only allows you to choose long/short preamble and was originally on Long; switched to short when the issue began, no change. Currently back to Long

    ■ Everything is at WPA2

    ■ Router has WWM settings enabled as well as Internet Access QoS

    ■ How do you mean "more than one machine"?; they do but the only one that seems to be "within range" is 3 houses away, as I have explained previously, with weak wifi of those manufacturers, very weak until I actually walk from my house to the house's door; as I've explained above, I have a Netgear N600 wireless router that is extended by a Netgear WN2000RPT wifi extender that was introduced months after the problem began - I previously had a Belkin N+ wireless router and tried with a D-link router, all with the same issues.

    ■ Router has not been set to limit devices
 
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MartinWilson

MartinWilson

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Aug 13, 2013
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How many devices hang off the repeater - Netgear WN2000RPT Wireless Extender?

Repeaters can cause a lot of headaches and should only be used when no other options enabled. They can cause performance issues (due to the nature of how half-duplex) and must be placed strategically (should be a 50% overlap of signal with the originating AP/wireless router)
 
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thelastcenturion

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Jul 24, 2011
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Problem has existed several months prior to having the repeater. That said, PC + 360; that's it.
 
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thelastcenturion

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Ok, so after searching for more intricate solutions to this problem, I have found something that I hope works. First off, I want to establish this fact: anything on the 2.4GHz 802.11b/g will have problems while those connecting via 2.4GHz 802.11n have no issue.

So my question is: Can changing the RTS/CTS and Fragmentation Length or possibly the MTU could fix this issue of an outside source disrupting the band?
 
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