Instructions for testing updated L2TP drivers with NT5 Beta1:


To install L2TP:
----------------
    Right-click Network Neighborhood on desktop and select Properties
    Select Protocols tab
    Press Add button
    Select Layer 2 Tunneling Protocol and press OK

    <The above gives you the Dial-Up Client automatically, allowing you to
     make outbound L2TP calls.  If you want to receive calls, you also need
     the Dial-Up Server installed as follows:>

    Select Services tab
    Press Add button
    Select Dial-Up Server and press OK

    <The Dial-Up server uses DHCP to obtain addresses to hand out to PPP
    clients by default.  To set a static pool instead:>

    Select Dial-Up Server
    Select Properties
    Select TCP/IP tab
    Select "static pool" and enter the desired range

    <You will need to create a user account with dial-in access on the server
     as follows:>

    Select Start->Programs->NT4AdminTools->UserManager
    Select menu User->NewUser
    Set username, e.g. "l2tptest"
    Set password and confirm, e.g. "x"
    Press Dial-In
    Check "Grant Dial-In permissions"
    Press OK
    Press Add


To update the RASL2TP.SYS driver:
---------------------------------
    Download ftp.microsoft.com\developr\rfc\l2tp\rasl2tp.sys
    copy rasl2tp.sys to <nt-dir>\system32\drivers directory
    reboot

    <The driver has kd debug symbols included in the executable>

    <The driver contains all fixes made in Ohio>


To initiate call
----------------
    Select Start->Program->Accessories->Dial-Up Networking
    Press New button
    Type arbitrary entry name, e.g. "l2tp test"
    Check the "I know all" box and press Finish
    Set "Phone number" to the IP address of the server's LAN card.  On NT, this
        can be found using the "ipconfig" command
    Set "Dial using" to "(VPN000-1)"
    Select Server tab
    If any net protocols besides IP are checked, uncheck them, then press OK
    Press Dial
    Enter PPP username and password, then press OK


To set RASL2TP.SYS configuration options:
-----------------------------------------
    Start->Run, type "regedt32", press OK
    Select HKEY_LOCAL_MACHINE window
    Select branch SYSTEM\CurrentControlSet\Control\Class
    Select the key with ID beginning 4D36E972
    Down-arrow thru adapters until right window shows
        Description of WAN Miniport(L2TP)

    Configuration options are set by adding/editing values under this key,
    e.g. to disable payload sequencing:

        Select from menu Edit->AddValue
        Type value of "PayloadReceiveWindow" and type of REG_DWORD, press OK
        Set data to 0

    You must reboot to get the driver to re-initialize with the new settings


Configuration Values
--------------------

    OutgoingRole (REG_DWORD)
        Set to 1 to dial out as LNS, i.e. send OCRP
        Set to 2 to dial out as LAC, i.e. send ICRP

    PayloadReceiveWindow (REG_DWORD)
        Set to 0 to disable payload sequencing
        or set to size of payload receive window sent in ICRP and OCRQ

    HostName (REG_SZ)
        Set to the string to send in Host Name AVP, default is "NONE".

    Password (REG_SZ)
        Set to the secret string shared between peers for tunnel
        authentication.  Default is no tunnel authentication.


    Here are some others I won't bother describing for now:
        MaxSendTimeoutMs
        InitialSendTimeoutMs
        MaxRetransmits
        HelloMs
        MaxAckDelayMs
        MaxOutOfOrder
        ControlReceiveWindow
        PayloadSendWindow
        IgnoreFramingMismatch
        ExclusiveTunnels


To enable RASL2TP.SYS kd debug tracing (if desired):
----------------------------------------------------
    break in kd debugger
    ed rasl2tp!g_ulTraceLevel 10 (or 18 or 20 for more)


NetMon parser:
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    Sorry, I don't have a netmon parser for you at the moment.