Re: NDIS - asymmetric link speed

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From: Arkady Frenkel (arkadyf_at_hotmailxdotxcom)
Date: 01/15/05

  • Next message: Optima: "What driver i have to develope" 
    Date: Sat, 15 Jan 2005 23:01:02 +0200

    You can check that in any modern Os ( including XP SP2 ) : set half-duplex
    and you'll see the change in TCPWindowSize by any sniffer ( netmon ,
    ethereal... ). Unless Intel still continue to produce serialized drivers :)
    Arkady

    "Maxim S. Shatskih" <maxim@storagecraft.com> wrote in message
    news:#FujTev#EHA.3472@TK2MSFTNGP14.phx.gbl...
    > Alireza already told us that the "full-duplex" mode is a no-op in
    modern
    > Windows, since the real deserialized miniports are out here.
    >
    > --
    > Maxim Shatskih, Windows DDK MVP
    > StorageCraft Corporation
    > maxim@storagecraft.com
    > http://www.storagecraft.com
    >
    > "Pavel A." <pavel_a@NOwritemeNO.com> wrote in message
    > news:%23CSP5Xq%23EHA.600@TK2MSFTNGP09.phx.gbl...
    > > ?? Where that duplex mode is set in the registry?
    > > All device specific options like duplex, media type etc are not relevant
    for
    > me.
    > >
    > >
    > > "Arkady Frenkel" <arkadyf@hotmailxdotxcom> wrote in message
    > news:umET6gj#EHA.2584@TK2MSFTNGP09.phx.gbl...
    > > > Forgot to mention. That you have to take radio/line speed not current
    > > > up/down.
    > > > There are a lot for 802.11 for sure
    > > > Arkady
    > > >
    > > > "Arkady Frenkel" <arkadyf@hotmailxdotxcom> wrote in message
    > > > news:OsyISBj#EHA.3472@TK2MSFTNGP14.phx.gbl...
    > > > > Pavel !
    > > > > Be aware that speed changed due to duplex mode set from/in registry
    too
    > > > > Arkady
    > > > >
    > > > > "Pavel A." <pavel_a@NOwritemeNO.com> wrote in message
    > > > > news:eq1tQre#EHA.3708@TK2MSFTNGP14.phx.gbl...
    > > > > > Dear NDIS gurus,
    > > > > > Now I have adapter with asymmetric send/receive speed ( uplink
    speed
    > > > about
    > > > > 1/3... 1/4 of downlink).
    > > > > > The media type is ethernet (generic or, possibly, 802.11
    emulated).
    > > > > > How TCPIP relies on link speed value reported by driver? which
    link
    > > > speed
    > > > > the driver should report?
    > > > > > And same question, if the device does throttling and
    prioritizing -
    > the
    > > > > actual link speed
    > > > > > is different for different payload types.
    > > > > >
    > > > > > The marketing, sure enough, wants to display the biggest speed
    value...
    > > > > >
    > > > > > Thanks,
    > > > > > Pavel
    > > > > >
    > > > > >
    > > > > >
    > > > > >
    > > > >
    > > > >
    > > >
    > > >
    > >
    > >
    >
    >

  • Next message: Optima: "What driver i have to develope"

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