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  • 2,520. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    norgard wrote:

     

    go get 'em, gphonei!

     

    Here's a puzzle.  I gave up trying to get my wifi working about 2 months ago and hooked up an ethernet cable. About a week ago, I unplugged the cable and turned on wifi back on - voila, it has been working flawlessly - go figure  ;-)

    Well, we know there have been updates to OS-X, so perhaps Apple did finally find some weird degenerate case which they were not handling correctly, or well.  It's a good bit of information to have this update from you.  Since there was all of a sudden, silence on this issue, I guessed some update or "fix" had happened and people were no longer coming to this issue, or the other one and asking for help.

  • 2,521. Re: Lion WiFi Connection Problem
    snipjo Level 1 Level 1 (0 points)

    Hi

     

    I am part of the "basic to zero" IT understanding person of the thread ....:-)

    I have a Netgear Wireless-N 150 router, does this mean I only have a n channel? My wi-fi drop are more or less frequent but can reach an upsetting level sometimes...

     

    Looking at Wi Fi , it shows:

     

    Mode PHY: 802.11.n

    B SSID/ 00:26:f2:ec:at:8e

    Canal 1: (2.4 GHz)

    Security: WPA2 Personnel

    RSSI: -58

    Vitesse trqnsmission: 65

    Index MCSO

     

    Does this relates in some ways to your what your said earlier "802.11n as well as WPA/WPA2 implementations are all relatively "new", and if the router's firmware has not been kept up to date, there are going to be problems with one or more of these features."?

    How do we check a firmware has an update available and how do we upload it?

    Should I consider trying a new router for g channel?

     

    I already tried resetting wi-fi, solution was temporary only, changing DHCP....but always quite stuck due to my poor IT level....This is of course my first Mac which doesn't help....

     

    Again, thanks a lot in advance if the above can help someone to give me any clue for progress....I have no ethernet/internet plug available in the room unless giving up and using CPL adaptator maybe?

  • 2,522. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    snipjo wrote:

     

    Hi

     

    I am part of the "basic to zero" IT understanding person of the thread ....:-)

    I have a Netgear Wireless-N 150 router, does this mean I only have a n channel?

    802.11n vs 802.11g is a protocol difference which determines how the radios on either end use the airwaves to communicate.  802.11n is newer than 802.11g, and includes the use of more radio spectrum to provide higher speed data transfers over wireless.

    My wi-fi drop are more or less frequent but can reach an upsetting level sometimes...

     

    Looking at Wi Fi , it shows:

     

    Mode PHY: 802.11.n

    B SSID/ 00:26:f2:ec:at:8e

    Canal 1: (2.4 GHz)

    Security: WPA2 Personnel

    RSSI: -58

    Vitesse trqnsmission: 65

    Index MCSO

     

    Does this relates in some ways to your what your said earlier "802.11n as well as WPA/WPA2 implementations are all relatively "new", and if the router's firmware has not been kept up to date, there are going to be problems with one or more of these features."?

    That informations shows what protocol the Mac is trying to use when communicating with your router.  Your router says that 802.11n is supported, so it is trying to use it.

    How do we check a firmware has an update available and how do we upload it?

    Should I consider trying a new router for g channel?

    open a "terminal window" (hold down Command and press space to open the spotlight window, and type terminal and hit return), and type "netstat -rn | grep default" and press return.  You should see a line like the following.

     

    default            192.168.1.1        UGSc           28        0     en1

     

    as the output of that command.  Use that IP address in your web browser to access your router (for netgear, you might be able to just use http://www.routerlogin.net as shown in the user manual).  Use the user manual at

     

    ftp://downloads.netgear.com/files/WNR1000_SM_WW_23Jan09.pdf

     

    and look at pages 18 and 19 about logging into your router and checking for new firmware updates.

    I already tried resetting wi-fi, solution was temporary only, changing DHCP....but always quite stuck due to my poor IT level....This is of course my first Mac which doesn't help....

     

    Again, thanks a lot in advance if the above can help someone to give me any clue for progress....I have no ethernet/internet plug available in the room unless giving up and using CPL adaptator maybe?

    Please post back here about your progress after you have tried to check your firmware version and applied any updates which were available.

  • 2,523. Re: Lion WiFi Connection Problem
    snipjo Level 1 Level 1 (0 points)

    Thanks so much for the speedy feedback and using the appropriate language to my level  ;-)

    Update done, will give it a try for a few days and post feedback accordingly

  • 2,524. Re: Lion WiFi Connection Problem
    calebfromqld Level 1 Level 1 (0 points)

    snipjo wrote:

     

    Mode PHY: 802.11.n

    B SSID/ 00:26:f2:ec:at:8e

    Canal 1: (2.4 GHz)

    Security: WPA2 Personnel

    RSSI: -58

    Vitesse trqnsmission: 65

    Index MCSO

    Thanks for posting this.  It shows you're using wifi mode n at 2.4 GHz.   I had the exact problem where my wireless router had a buggy implementation of this mode (even after updating firmware).  My Macs were the only devices on my home network using this mode.  All other devices were using mode g.  I would like to suggest changing it to mode g on your router, and seeing whether that makes a difference.

  • 2,525. Re: Lion WiFi Connection Problem
    snipjo Level 1 Level 1 (0 points)

    I uploaded the latest firmware available for the router  WNR1000 , which is V1.1.2.54

    I will see first if any change on wi-fi drops, if not , how do you can I try and switch to g mode?

  • 2,526. Re: Lion WiFi Connection Problem
    calebfromqld Level 1 Level 1 (0 points)

    I don't know exactly which model of netgear you have, but here is a manual for the WNR1000 (Netgear N150):

     

    ftp://downloads.netgear.com/files/WNR1000_SM_WW_23Jan09.pdf

     

    There is a section called "Specifying Wireless Settings". Typically, when you login to your router through a browser, there will be a bunch of different pages with options.  You may have to hunt a bit to find your wireless settings.  The mode switch is probably currently set to something like "b+g+n" or "Auto", but you should be able to drop that down and select either "b+g" or "g only".  Something like that.

     

    Here is the manual for the more common DGN1000:

     

    http://www.downloads.netgear.com/files/GDC/DGN1000/DGN1000_UM_29Feb12.pdf

     

    On page 38 there is a screenshot of the wireless settings page, where there is a setting called "mode" and the default selected option is "up to 150Mbps". On the following page, the setting is explained:

     

    "Mode. Up to 150 Mbps is the default and allows 802.11n and 802.11g wireless devices to join the network. g & b supports up to 54 Mbps. Up to 65 Mbps supports up to 65 Mbps."

     

    So I guess you might have to select "Up to 54 Mbps" in order to (effectively) choose b+g.   I don't know why the manufacturers make this so confusing.

     

    Note that as far as I am aware, mode n at 2.4 GHz frequency actually only does 65 Mbps.  If your router really can do mode n at 5 Ghz, your mac should be connecting using that mode.  (the confusing thing is that there are two modes called "n": one operating at 2.4GHz and another operating at 5Ghz.)

     

    In any case, changing the mode for the purposes of testing is very easy.  You just have to find the right settings screen, select the correct option and save.  It is as easy to change back too.  Do you have other wireless devices, e.g. mobile devices and/or PCs that use the same wireless network successfully?

  • 2,527. Re: Lion WiFi Connection Problem
    calebfromqld Level 1 Level 1 (0 points)

    calebfromqld wrote:

     

    Note that as far as I am aware, mode n at 2.4 GHz frequency actually only does 65 Mbps.  If your router really can do mode n at 5 Ghz, your mac should be connecting using that mode. 

    I looked again at the diagnostic information you posted earlier:

     

    Vitesse trqnsmission: 65

     

    I am not familiar with the language, but it seems that this item is likely referring to the connection speed, correct? That would also confirm mode n at 2.4 GHz with a connection speed of 65 Mbps.   I could never get this mode to work properly on my own home network, but I had more than ten devices working well with mode g simultaneously, and in a fairly congested wifi neighbourhood.  My router was a netcomm, provided by my ISP, and for me, firmware updates did not help.

  • 2,528. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    calebfromqld wrote:

     

    calebfromqld wrote:

     

    Note that as far as I am aware, mode n at 2.4 GHz frequency actually only does 65 Mbps.  If your router really can do mode n at 5 Ghz, your mac should be connecting using that mode. 

    I looked again at the diagnostic information you posted earlier:

     

    Vitesse trqnsmission: 65

     

    I am not familiar with the language, but it seems that this item is likely referring to the connection speed, correct? That would also confirm mode n at 2.4 GHz with a connection speed of 65 Mbps.   I could never get this mode to work properly on my own home network, but I had more than ten devices working well with mode g simultaneously, and in a fairly congested wifi neighbourhood.  My router was a netcomm, provided by my ISP, and for me, firmware updates did not help.

    Rather than having a unique name for WiFi on 5ghz, like there is for 802.11a, 802.11n has specifications for how it works on 2.4ghz where there is limited frequency space, and on 5ghz where there is much more frequency space allocated.  Look at http://en.wikipedia.org/wiki/IEEE_802.11, for specifics.

     

    The netgear N-150 does not support 5ghz.  Routers which support both 2.4ghz and 5ghz will say "Dual Band" on the box in most cases.  Some manufactures do have single band 5ghz routers, but those are usually produced for enterprise or campus networking environments. I use the nanostation devices on http://ubnt.com for many applications where I need a much bigger coverage area.

     

    There are new standards coming with 802.11ac so we will likely see a whole new round of compatibility problems.

    Netgear has some hints about what they are doing on their web site at:

     

    http://www.netgear.com/home/products/wirelessrouters/ultimate-performance/R6300. aspx.

  • 2,529. Re: Lion WiFi Connection Problem
    calebfromqld Level 1 Level 1 (0 points)

    gphonei wrote:

    calebfromqld wrote:

    I am not familiar with the language, but it seems that this item is likely referring to the connection speed, correct? That would also confirm mode n at 2.4 GHz with a connection speed of 65 Mbps.  

    Rather than having a unique name for WiFi on 5ghz, like there is for 802.11a, 802.11n has specifications for how it works on 2.4ghz where there is limited frequency space, and on 5ghz where there is much more frequency space allocated.  Look at http://en.wikipedia.org/wiki/IEEE_802.11, for specifics.

    I have read that page.  However, I have never seen mode n at 2.4 GHz connect at anything above 65 Mbps, despite using both additional 20MHz and 40 MHz bands (have you?).    

     

    On the airport extreme, and probably other routers, you actually can make the 2.4 GHz and (mode n) 5 GHz networks appear as separate network SSIDs.

    gphonei wrote:

     

    The netgear N-150 does not support 5ghz.  Routers which support both 2.4ghz and 5ghz will say "Dual Band" on the box in most cases. 

     

    Agreed.

  • 2,530. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    calebfromqld wrote:

     

    gphonei wrote:

    calebfromqld wrote:

    I am not familiar with the language, but it seems that this item is likely referring to the connection speed, correct? That would also confirm mode n at 2.4 GHz with a connection speed of 65 Mbps.  

    Rather than having a unique name for WiFi on 5ghz, like there is for 802.11a, 802.11n has specifications for how it works on 2.4ghz where there is limited frequency space, and on 5ghz where there is much more frequency space allocated.  Look at http://en.wikipedia.org/wiki/IEEE_802.11, for specifics.

    I have read that page.  However, I have never seen mode n at 2.4 GHz connect at anything above 65 Mbps, despite using both additional 20MHz and 40 MHz bands (have you?).    

    No, 2.4ghz is limited based on the total amount of bandwidth, and the standards committee compromising on making 2.4ghz 802.11n be a little upgrade to speed.  There isn't enough channels on 2.4ghz to allow more than 3 unique routers to function with 802.11n.  That's part of the problem with interfering signals suddenly incapacitating poorly built WiFi equipment when multiple routers are on the same channel.

     

    The technical details of RF are that the more "spectrum" a signal occupies, the more power it takes to go a particular distance.  This difference is geometric, and thus switching from 802.11n to 802.11g can improve the range your equipment can work over, and it can improve the signal strength enough to keep a weaker signal from interferring so much.

     

    When people switch from 802.11n to 802.11g, and it fixes their problem, sometimes, that's due to interfering signals more than "broken" 802.11n on one side or the other.

     

    On the airport extreme, and probably other routers, you actually can make the 2.4 GHz and (mode n) 5 GHz networks appear as separate network SSIDs

     

    Yes, and practically, you should so that you can make sure you pick one frequency verses the other when testing to see which frequency can work the best for you.  Usually, this will be 5ghz.  The 2.4ghz spectrum will usually be the most problematic because so many other types of radios use that spectrum.

  • 2,531. Re: Lion WiFi Connection Problem
    calebfromqld Level 1 Level 1 (0 points)

    gphonei wrote:

     

    This difference is geometric, and thus switching from 802.11n to 802.11g can improve the range your equipment can work over, and it can improve the signal strength enough to keep a weaker signal from interferring so much.

     

    This is very ironic, considering mode n is supposed to increase the usuable signal range, c.f. wikipedia: mode n indoor range 70 m up from mode g's 38 m range!  I can definitely confirm that my 5 Ghz mode n has a very large range in my home, much bigger than mode g.

     

    Thanks for the other info.

  • 2,532. Re: Lion WiFi Connection Problem
    gphonei Level 1 Level 1 (0 points)

    calebfromqld wrote:

     

    gphonei wrote:

     

    This difference is geometric, and thus switching from 802.11n to 802.11g can improve the range your equipment can work over, and it can improve the signal strength enough to keep a weaker signal from interferring so much.

     

    This is very ironic, considering mode n is supposed to increase the usuable signal range, c.f. wikipedia: mode n indoor range 70 m up from mode g's 38 m range!  I can definitely confirm that my 5 Ghz mode n has a very large range in my home, much bigger than mode g.

     

    Thanks for the other info.

    I think that those ranges are based on maximum power levels as controlled by the appropriate agency in the applicable country.  Many consumer radios are lower power, because the manufactures try to protect the people "sitting" near the routers.  In the US, the FCC limits Part-15 devices on 2.4ghz to 1 watt out at the antenna, unless you use a high gain directional antenna as in a WISP or other linking application..  Consumer WiFi radios seem to be limited to 23dbm output, or 10^2.3, or just under 200 milliwatts.  That limit sets the range based on the "bandwidth" of the individual transmitted protocol's signal at any moment in time.

     

    Of course I don't know what the individual router manufactures are doing to manage power, overall, so your mileage may vary.

     

     

    http://electronics.stackexchange.com/questions/25355/building-an-outdoor-wifi-co nnection

  • 2,533. Re: Lion WiFi Connection Problem
    snipjo Level 1 Level 1 (0 points)

    I have an iPhone and a professionnal Windows laptop,  no drops ever, especially when working on PC using same wi-fi just aside the MAC ....

    No drops since yesterday that I updated the router, but still too early to tell...I switched tonight to Mode at 54Mbps. I am away some days but will tell you if any significant improvement is ther upon return.

    Again , deep thanks for your support

  • 2,534. Re: Lion WiFi Connection Problem
    mymatelee Level 1 Level 1 (0 points)

    Hi all,

     

    I have 3 MacBook Airs and all had this f@@@@g problem :(

     

    I had a netgear and linksys router and still problems.

     

    Then I thought to myself, Apple are so secretive they don't test these things outside of there own building.

     

    So... I purchased an Airport Extreme and hey presto the MacBook Air now works  perfectly fine.

     

    One thing to note is when my washing machine is on it doesn't work, probably interference.

     

    Also change your MTU to 1300 which is the same as a VPN connection..

     

    This has caused me no end of trouble and heartache....

     

    Hope this helps....

     

    In boot camp change your MTU to 1300 too.

     

    Total P.O.S.