Challenging problem: Intermittent issues with secure site(s)

Discussion in 'Wireless Networking' started by Matthew, Apr 12, 2006.

  1. Matthew

    Matthew Guest

    Hi everyone,

    I'm hoping that someone here can provide me with some insight into a
    rather annoying problem I've been having. I have a private practice
    with 4 wired desktops and 4 wireless laptops. All 8 computers utilize
    two online services called AdvancedMD and DigiChart. The wired
    computers work just fine, the wireless computers on the other are
    plagued with connectivity issues. These issues cost the doctors and
    their nurses a lot of lost time and frustration. I've tried
    everything I can think of (and performed many experiments), but all to
    no effect. I've talked at length to the two service providers, but
    they haven't been able to give me any advice. I tend to think that
    the majority of their clients use wired networks and so they don't
    have a lot of experience with this wireless problem I'm having.
    I'll jump into the details:

    The problem
    ==========
    ·In the course of a typical day the laptops loose their connection to
    the online services 1 or more times (usually a lot more)
    ·Once in a blue moon the laptops won't loose connectivity at all
    throughout day

    Symptoms and observations
    ======================
    ·The error message is "The page cannot be displayed" or a similar
    browser error
    ·The problem does not effect normal network functionality (such as
    web browsing, email, or shared drives)
    ·F5 works sometimes, other times not
    ·The problem occurs on each laptop independently and at different
    times
    ·There is no discernable periodicity to the errors to provide some
    kind of a hint
    ·No obvious network errors are present except for the occasional
    packet timeouts that I've always associated with wireless networks
    ·The wired computers do not have any problems

    Other technical stuff that might be useful
    ===============================
    ·Current wireless access point: Buffalo Technology WHR-HP-G54
    ·3 laptops of one make and model, 1 of another make and model (all 4
    do the same thing)
    ·I have tried several other access points
    ·I have not tried an expensive access point like Cisco's Aironet.
    ·The web services use SSL to secure their websites
    ·Both services rely heavily on ActiveX so only Internet Explorer will
    work
    ·The practice is in a hospital so there's plenty of interference
    from medical equipment

    I really need a fresh perspective. I've been dealing with this
    problem for so long my mind has grown stale. Thanks in advance for any
    advice you can give me.

    Matthew
     
    Matthew, Apr 12, 2006
    #1
    1. Advertising

  2. Hi Matthew

    The Buffalo APs are among the best Entry Level WIFI devices.

    My suspicion would be that the heavy encryption + the noisy environment
    throw the Wireless out of Sync.

    I would set a Wired computer and a wireless one in a Faraday cage (if you
    have one) and see how it works none stop through out the day (or make an
    experimental installation off premise).

    Trying 802.11a devices might do the trick too, if the issue is excessive
    noise.

    There is also a remote possibility that there is some incompatibility with
    the product. Wireless is not as flexible as wire to move and oOf mainstream
    protocols and encryption forms, might bogged down the system after a while.

    Providers of Entry level Wireless devices may know nothing about such an
    issue.

    Cisco on the other hand are providing service to Medical Centers, might be
    worth while to call.

    Example, http://www.cisco.com/web/strategy/healthcare/hospitals_pocono.html

    Jack (MVP-Networking).





    "Matthew" <> wrote in message
    news:...
    Hi everyone,

    I'm hoping that someone here can provide me with some insight into a
    rather annoying problem I've been having. I have a private practice
    with 4 wired desktops and 4 wireless laptops. All 8 computers utilize
    two online services called AdvancedMD and DigiChart. The wired
    computers work just fine, the wireless computers on the other are
    plagued with connectivity issues. These issues cost the doctors and
    their nurses a lot of lost time and frustration. I've tried
    everything I can think of (and performed many experiments), but all to
    no effect. I've talked at length to the two service providers, but
    they haven't been able to give me any advice. I tend to think that
    the majority of their clients use wired networks and so they don't
    have a lot of experience with this wireless problem I'm having.
    I'll jump into the details:

    The problem
    ==========
    ·In the course of a typical day the laptops loose their connection to
    the online services 1 or more times (usually a lot more)
    ·Once in a blue moon the laptops won't loose connectivity at all
    throughout day

    Symptoms and observations
    ======================
    ·The error message is "The page cannot be displayed" or a similar
    browser error
    ·The problem does not effect normal network functionality (such as
    web browsing, email, or shared drives)
    ·F5 works sometimes, other times not
    ·The problem occurs on each laptop independently and at different
    times
    ·There is no discernable periodicity to the errors to provide some
    kind of a hint
    ·No obvious network errors are present except for the occasional
    packet timeouts that I've always associated with wireless networks
    ·The wired computers do not have any problems

    Other technical stuff that might be useful
    ===============================
    ·Current wireless access point: Buffalo Technology WHR-HP-G54
    ·3 laptops of one make and model, 1 of another make and model (all 4
    do the same thing)
    ·I have tried several other access points
    ·I have not tried an expensive access point like Cisco's Aironet.
    ·The web services use SSL to secure their websites
    ·Both services rely heavily on ActiveX so only Internet Explorer will
    work
    ·The practice is in a hospital so there's plenty of interference
    from medical equipment

    I really need a fresh perspective. I've been dealing with this
    problem for so long my mind has grown stale. Thanks in advance for any
    advice you can give me.

    Matthew
     
    Jack \(MVP-Networking\)., Apr 12, 2006
    #2
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  3. Matthew

    Matthew Guest

    Jack,

    Thanks for the reply. I found another article similar to the one you
    linked to in your post. It described a hospital that was successfully
    networked wirelessly using Trapeze Networks equipment. Looks like I
    need to stop playing around with the entry level stuff (or get a
    Faraday cage and try some more experiments).

    Thanks,
    Matthew


    Jack (MVP-Networking). wrote:
    > Hi Matthew
    >
    > The Buffalo APs are among the best Entry Level WIFI devices.
    >
    > My suspicion would be that the heavy encryption + the noisy environment
    > throw the Wireless out of Sync.
    >
    > I would set a Wired computer and a wireless one in a Faraday cage (if you
    > have one) and see how it works none stop through out the day (or make an
    > experimental installation off premise).
    >
    > Trying 802.11a devices might do the trick too, if the issue is excessive
    > noise.
    >
    > There is also a remote possibility that there is some incompatibility with
    > the product. Wireless is not as flexible as wire to move and oOf mainstream
    > protocols and encryption forms, might bogged down the system after a while.
    >
    > Providers of Entry level Wireless devices may know nothing about such an
    > issue.
    >
    > Cisco on the other hand are providing service to Medical Centers, might be
    > worth while to call.
    >
    > Example, http://www.cisco.com/web/strategy/healthcare/hospitals_pocono.html
    >
    > Jack (MVP-Networking).
    >
    >
    >
    >
    >
    > "Matthew" <> wrote in message
    > news:...
    > Hi everyone,
    >
    > I'm hoping that someone here can provide me with some insight into a
    > rather annoying problem I've been having. I have a private practice
    > with 4 wired desktops and 4 wireless laptops. All 8 computers utilize
    > two online services called AdvancedMD and DigiChart. The wired
    > computers work just fine, the wireless computers on the other are
    > plagued with connectivity issues. These issues cost the doctors and
    > their nurses a lot of lost time and frustration. I've tried
    > everything I can think of (and performed many experiments), but all to
    > no effect. I've talked at length to the two service providers, but
    > they haven't been able to give me any advice. I tend to think that
    > the majority of their clients use wired networks and so they don't
    > have a lot of experience with this wireless problem I'm having.
    > I'll jump into the details:
    >
    > The problem
    > ==========
    > ·In the course of a typical day the laptops loose their connection to
    > the online services 1 or more times (usually a lot more)
    > ·Once in a blue moon the laptops won't loose connectivity at all
    > throughout day
    >
    > Symptoms and observations
    > ======================
    > ·The error message is "The page cannot be displayed" or a similar
    > browser error
    > ·The problem does not effect normal network functionality (such as
    > web browsing, email, or shared drives)
    > ·F5 works sometimes, other times not
    > ·The problem occurs on each laptop independently and at different
    > times
    > ·There is no discernable periodicity to the errors to provide some
    > kind of a hint
    > ·No obvious network errors are present except for the occasional
    > packet timeouts that I've always associated with wireless networks
    > ·The wired computers do not have any problems
    >
    > Other technical stuff that might be useful
    > ===============================
    > ·Current wireless access point: Buffalo Technology WHR-HP-G54
    > ·3 laptops of one make and model, 1 of another make and model (all 4
    > do the same thing)
    > ·I have tried several other access points
    > ·I have not tried an expensive access point like Cisco's Aironet.
    > ·The web services use SSL to secure their websites
    > ·Both services rely heavily on ActiveX so only Internet Explorer will
    > work
    > ·The practice is in a hospital so there's plenty of interference
    > from medical equipment
    >
    > I really need a fresh perspective. I've been dealing with this
    > problem for so long my mind has grown stale. Thanks in advance for any
    > advice you can give me.
    >
    > Matthew
     
    Matthew, Apr 13, 2006
    #3
  4. Matthew

    Eugene Guest

    I did some tech support for Buffalo. Their radio's are a piece of
    crap(probably why they are so cheap). I use Linksys MIMO technology and I
    have no problem. If there is alot of interference in your area, you might
    want to try this technology instead of something much more expensive. Most
    higher end devices use better radio's then lower end.
    "Matthew" <> wrote in message
    news:...
    Jack,

    Thanks for the reply. I found another article similar to the one you
    linked to in your post. It described a hospital that was successfully
    networked wirelessly using Trapeze Networks equipment. Looks like I
    need to stop playing around with the entry level stuff (or get a
    Faraday cage and try some more experiments).

    Thanks,
    Matthew


    Jack (MVP-Networking). wrote:
    > Hi Matthew
    >
    > The Buffalo APs are among the best Entry Level WIFI devices.
    >
    > My suspicion would be that the heavy encryption + the noisy environment
    > throw the Wireless out of Sync.
    >
    > I would set a Wired computer and a wireless one in a Faraday cage (if you
    > have one) and see how it works none stop through out the day (or make an
    > experimental installation off premise).
    >
    > Trying 802.11a devices might do the trick too, if the issue is excessive
    > noise.
    >
    > There is also a remote possibility that there is some incompatibility with
    > the product. Wireless is not as flexible as wire to move and oOf

    mainstream
    > protocols and encryption forms, might bogged down the system after a

    while.
    >
    > Providers of Entry level Wireless devices may know nothing about such an
    > issue.
    >
    > Cisco on the other hand are providing service to Medical Centers, might be
    > worth while to call.
    >
    > Example,

    http://www.cisco.com/web/strategy/healthcare/hospitals_pocono.html
    >
    > Jack (MVP-Networking).
    >
    >
    >
    >
    >
    > "Matthew" <> wrote in message
    > news:...
    > Hi everyone,
    >
    > I'm hoping that someone here can provide me with some insight into a
    > rather annoying problem I've been having. I have a private practice
    > with 4 wired desktops and 4 wireless laptops. All 8 computers utilize
    > two online services called AdvancedMD and DigiChart. The wired
    > computers work just fine, the wireless computers on the other are
    > plagued with connectivity issues. These issues cost the doctors and
    > their nurses a lot of lost time and frustration. I've tried
    > everything I can think of (and performed many experiments), but all to
    > no effect. I've talked at length to the two service providers, but
    > they haven't been able to give me any advice. I tend to think that
    > the majority of their clients use wired networks and so they don't
    > have a lot of experience with this wireless problem I'm having.
    > I'll jump into the details:
    >
    > The problem
    > ==========
    > ·In the course of a typical day the laptops loose their connection to
    > the online services 1 or more times (usually a lot more)
    > ·Once in a blue moon the laptops won't loose connectivity at all
    > throughout day
    >
    > Symptoms and observations
    > ======================
    > ·The error message is "The page cannot be displayed" or a similar
    > browser error
    > ·The problem does not effect normal network functionality (such as
    > web browsing, email, or shared drives)
    > ·F5 works sometimes, other times not
    > ·The problem occurs on each laptop independently and at different
    > times
    > ·There is no discernable periodicity to the errors to provide some
    > kind of a hint
    > ·No obvious network errors are present except for the occasional
    > packet timeouts that I've always associated with wireless networks
    > ·The wired computers do not have any problems
    >
    > Other technical stuff that might be useful
    > ===============================
    > ·Current wireless access point: Buffalo Technology WHR-HP-G54
    > ·3 laptops of one make and model, 1 of another make and model (all 4
    > do the same thing)
    > ·I have tried several other access points
    > ·I have not tried an expensive access point like Cisco's Aironet.
    > ·The web services use SSL to secure their websites
    > ·Both services rely heavily on ActiveX so only Internet Explorer will
    > work
    > ·The practice is in a hospital so there's plenty of interference
    > from medical equipment
    >
    > I really need a fresh perspective. I've been dealing with this
    > problem for so long my mind has grown stale. Thanks in advance for any
    > advice you can give me.
    >
    > Matthew
     
    Eugene, May 9, 2006
    #4
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