cant bind applications to network adapters/interfaces

Discussion in 'Windows XP Networking' started by bulk88, Apr 20, 2007.

  1. bulk88

    bulk88 Guest

    I have a problem binding applications to particular interfaces/network

    I have Win XP SP 2 Pro. I have 2 network adapters in my Machine, Wifi
    (Intel 3495ABG) and Ethernet (Broadcom Netxtreme Gigabit). I am using
    a bittorent application (utorrent specifically, but azureus exhibits
    similar behaviour), and I am attempting for it to use the Ethernet for
    all its communications, and all other applications to use the Wifi. I
    am not trying to download anything in Bittorent, only upload,
    behaviour for downloading is unknown. I changed "interface metrics" in
    the properties of TCPIP for each adapter using Windows GUI and Network
    Connections. I set the ethernet to 100, and the wifi to 1. I belive
    that will make the wifi the "default" adaptor in the system. I
    disabled Dead Gateway Detection through registry, it didnt do
    anything. I force the bittorrent application to only use the
    ethernet's IP through its own options.

    When wifi adaptor is on, Firefox (and presumably any other application
    that isnt the BT one), goes through the Wifi, verified by checking my
    IP on a webpage. When wifi is off, Firefox goes through ethernet.

    When the wifi adapter is disabled, I get full CONSTANT upload speed on
    the ethernet in the BT app (BT app's settings are always set to use IP
    of ethernet by me for all testing). When I turn on wifi, immediately
    speed drops, and goes to zero for 1 to 2 mins , then comes back for 30
    seconds at full speed, then drops again to zero for 1 to 2 mins , and
    keeps doing this over and over.

    Using 2 copies of Wireshark/Ethereal, I noticed that when my upload
    goes to zero in the application, ethernet IP stops sending out any
    data on ethernet adapter, I get a ton of retransmission requests from
    the other IPs on ethernet adapter, no reply is ever given to them.
    When I look at my wifi side, I see a couple (2-3) packets go OUT WITH
    ETHERNET IP destined for the IPs I saw on ethernet adapter sniffer, no
    more than 2-3 of these "ethenet IP as source going out over wifi
    adapter" packets I see. Then there is a long wait (1-2 mins) until
    the bittorent application starts uploading again over the ethernet

    When BT program starts uploading, I see a ARP request to get my
    default gateway's MAC. Then the BT program makes new connections
    (SYNs) to all the other IPs.

    The ethernet IP is a 10.0.8.*, wifi is 192.168.1.*. Plus external IPs
    are different for wifi and ethernet and different ISPs. What on earth
    is going on? I am pretty sure this problem is related to windows, not
    the specific applications.
    bulk88, Apr 20, 2007
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  2. bulk88

    bulk88 Guest

    Disabling Utorrent's interface binding, and instead loading it with
    this produced the same results.
    Maybe the below is useful to someone. is the ethernet I want
    Utorrent to use. is the wifi i want everything else to

    C:\Documents and Settings\Owner>route print
    Interface List
    0x1 ........................... MS TCP Loopback interface
    0x2 ...00 e5 d0 9b 9a 86 ...... Broadcom NetXtreme 57xx Gigabit
    Controller - Pa
    ket Scheduler Miniport
    0x3 ...00 ae e1 32 28 b4 ...... Intel(R) PRO/Wireless 3945ABG Network
    - Packet Scheduler Miniport
    0x20005 ...00 16 41 92 7c 40 ...... Bluetooth Personal Area Network
    from TOSHIB
    - Packet Scheduler Miniport
    Active Routes:
    Network Destination Netmask Gateway Interface
    Metric 100 1 100 100 100 1 1 1 1 100 1 1 1
    20005 1
    Default Gateway:
    Persistent Routes:

    C:\Documents and Settings\Owner>
    bulk88, Apr 20, 2007
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