802.11N Frustration!

So i configured about 47 Access points 2 years ago
AIR-LAP1141N-A-K9  
WLC 7.0.98
Its all working fine, using channel extension. Then my company bought a small office and i got 4
AIR-LAP1141N-A-K9  (awesome deal i pulled) then ok, plugged in, downloaded the image, DNS is config, all took about 10 minutes, AP up and running
NOw the FRUSTRATION!!!!
I have spent 5 HOURS! trying to create the CHANNEL EXTENSION! how did i do that? I remember something about 40Mhz but the controller wont allow me.
All APs says, current channel XX (Extension: XX) 
1- disable the radio
2- select 40 Mhz custom
then magically it would assign a extension to the channel and work at 300mbps
I CANNOT DO THIS! HOW?!!! PLEASEEEEEEEEEEE HELP!!! I GIVE UP!!!!!!!!
the worst! I have google this for like 4 hours, i cant fix it, i got tired now im stuck need second set of eyes!
found this:
https://supportforums.cisco.com/thread/335229
no help at all!

Vinay Saini said "
Jun 9, 2009 9:28 PM                             (in response to geetsingh22)
Re: client are not connected through 802.11n (AP 1140, WLC 5.2.178)
Hii ,
1. you need to configure WPA2+AES for the WLAN with WMM enabled on Qos page.
2. AFter doing this you will be able to connect at 144
3. For making 300 Mbps , Enable 40 Mhz operation for the AP
1. Go to AP radio setting page , disable radio
2. Make channel and power assignment as custom
3. Change the channel width to 40 Mhz
4. Enable radio
to make sure 40 mhz is enabled , go to AP console and issue "show controller d1"
you will see both primary and extended channel in use."
However the drop down only shows me 20MHZ. What the heck man! Maybe the controller is acting up and needs a reboot?

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    Well, I am not looking for a faster connection with file transfers within the house, what I am looking for is a solid, stable, consistent, connection. We just bought a new NetGear wireless router & the PC that is hard wired into it works fine, we were hoping that it would output a strong signal throughout the house for my laptop & the Wii & DS's. The Wii & the DS's work great, but for some reason my laptop can't keep the connection for more than 5 minutes at a time. It is VERY frustrating. I have read in several forums, where people have had the same problem, the MacBook Pro (older model) just can't hold onto a connection for more than a few minutes. I was in the same room as the router & my airport bars would go from 4, to 2, to 1 & then no signal & would have to search for an access point & then connect to it, only to have go through that same mess all over again. This is why I wanted to switch to a "n" card instead of "g". So that I would have a more stable connection. The router says that the "g" connection is supported up to a few hundred feet away from the router... I'm lucky if I keep a connection when I am sitting on a chair with the router underneath me.

  • AirPort Extreme 802.11n 4% Packet Loss

    I have three laptops (Macbook, HP, and ThinkPad), an iPhone 4, iPad, and a Wii on my wireless network. I replaced an old Linksys 802.11g access point and router with a new Airport Extreme 802.11n.
    Everything has been working fairly good except my ThinkPad. The TP has a ThinkPad 11b/g Wireless LAN Mini PCI Express Adapter III card and can connect to everything from coffee shop wireless to my Cisco WLAN using PEAP/WPA2 at work without skipping a beat.
    But here at home, with my new Airport - I'm losing about 4% of the pings I run and it'll drop my connection without warning. Almost like the WPA key is rotating, then just dies.
    The MacBook has an 802.11n card and can run extended ping tests without dropping a single one.
    The HP has an Intel centrino abg card and runs 0% loss as well.
    If I connect my old Linksys back up - I get 0% packet loss on WPA2 again, but to the AirPort - 4%.
    It's making my wireless network exceptionally frustrating.

    This is what I get when I'm connected to the main wireless network using 802.11g WPA2 (AES or TKIP).
    If you'd like to do this test, simply type this command from a command line (or terminal on an OS X computer)
    ping -t 10.0.1.1
    And when you're done, type CTRL+C to get the statistics. You can let it run for hours and come back.
    ping -t 10.0.1.1
    Request timed out.
    Request timed out.
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Ping statistics for 10.0.1.1:
    Packets: Sent = 100, Received = 96, Lost = 4 (4% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 2ms, Average = 0ms</div>
    Now, if I connect to the guest network or my Linksys WRT-G54, I get this:
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Reply from 10.0.1.1: bytes=32 time<1ms TTL=255
    Ping statistics for 10.0.1.1:
    Packets: Sent = 100, Received = 100, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 2ms, Average = 0ms</div>
    Not a single drop... and I'm still pinging the AirPort's IP address, so I know it's not the device itself dropping pings. It must be something funky with my T400's wireless card and the private network, nothing else makes sense.

  • Airport Extreme (802.11n dual) breaks network HP photosmart 3210 scanning

    I just "upgraded" from a Netgear to a new April 2009 Airport Extreme Base Station (802.11n dual). With the latest HP software etc the HP photosmart 3210 all-in-one scanner (connected via network to the router) works fine with my macs (a bunch of 10.5 machines), but when I swap out and use the new Apple Router the Scanning hanges and a message pops up on HP Scan Pro SW "Error (Sorry, scanner could not be initialized. An error has occurred communicating with the scanner.)" I reinstalled the HP SW and re-added the printer - no change.
    Printing is fine - and scanning is fine when I go back to my old router. This looks like a router firmware issue, I'm probably going to have to return the router - bummer - anybody have this issue or can help?

    Thanks for the idea, but my printer is connected by ethernet to the router and desktop computers - (I haven't tried wireless scanning with my laptops). I wouldn't think that wireless settings would impact the wired part of the router - but you never know.
    It is frustrating how many incompatibility there are from router to router I don't understand why there can't be a standard and everyone sticks to it. (another example, google maps detailed zooming in and out will always freeze my netgear router - which is one reason I went to the apple router!)

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