Paradise dialup error 720

Discussion in 'NZ Computing' started by Mainlander, Oct 10, 2003.

  1. Mainlander

    Mainlander Guest

    Analysis of PPP logs (data has been omitted except where analysed)

    Successful connection (extract):

    10-08-2003 18:21:55.46 - IPCP : Received and accepted compression
    protocol request f 1.
    10-08-2003 18:21:55.46 - IPCP : Received and accepted IP address of
    ca002e51.
    10-08-2003 18:21:55.46 - PPP : Transmitting Control Packet of length: 18
    10-08-2003 18:21:55.47 - PPP : Received Control Packet of length: 12
    10-08-2003 18:21:55.47 - CCP : Received and accepted compression value 1.
    10-08-2003 18:21:55.47 - PPP : Transmitting Control Packet of length: 12
    10-08-2003 18:21:55.58 - PPP : Received Control Packet of length: 18
    10-08-2003 18:21:55.58 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:55.58 - Data 0000: 80 21 01 02 00 1c 02 06 | .!.....
    10-08-2003 18:21:55.58 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:55.58 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:55.58 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:55.58 - PPP : Received Control Packet of length: 12
    10-08-2003 18:21:55.58 - CCP : Layer up.
    10-08-2003 18:21:55.69 - PPP : Received Control Packet of length: 24
    10-08-2003 18:21:55.69 - Data 0000: 80 21 03 02 00 16 03 06 | .!.....
    10-08-2003 18:21:55.69 - Data 0008: d2 f6 18 e9 81 06 cb 60 | ......`
    10-08-2003 18:21:55.69 - Data 0010: 98 04 83 06 cb 60 98 0c | .....`..


    Packet analysis:
    80 21: IPCP protocol
    03: Configuration-Nak
    02: Identifier
    16: Total length after the protocol specifier is 22 bytes (16 hex). The
    total packet length is 24 bytes.
    06: Total length 6 bytes i.e. the next four bytes are the IP address d2
    f6 18 e9 (210.246.xx.xx)
    81: Primary DNS Server Address
    06: Total length 6 bytes i.e. the next 4 bytes are the address cb 60 98
    04
    83: Secondary DNS Server Address
    06: Total length 6 bytes i.e. the next 4 bytes are the address cb 60 98
    0c


    10-08-2003 18:21:55.69 - IPCP : Changing IP address from 0 to d2f618e9.
    10-08-2003 18:21:55.69 - IPCP : Accepting primary DNS cb609804.
    10-08-2003 18:21:55.69 - IPCP : Accepting backup DNS cb60980c.
    10-08-2003 18:21:55.69 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:55.69 - Data 0000: 80 21 01 03 00 1c 02 06 | .!.....
    10-08-2003 18:21:55.69 - Data 0008: 00 2d 0f 01 03 06 d2 f6 | .-......
    10-08-2003 18:21:55.69 - Data 0010: 18 e9 81 06 cb 60 98 04 | ....`..
    10-08-2003 18:21:55.69 - Data 0018: 83 06 cb 60 98 0c 00 00 | ...`....
    10-08-2003 18:21:55.80 - PPP : Received Control Packet of length: 30
    10-08-2003 18:21:55.80 - Data 0000: 80 21 02 03 00 1c 02 06 | .!.....
    10-08-2003 18:21:55.80 - Data 0008: 00 2d 0f 01 03 06 d2 f6 | .-......
    10-08-2003 18:21:55.80 - Data 0010: 18 e9 81 06 cb 60 98 04 | ....`..
    10-08-2003 18:21:55.80 - Data 0018: 83 06 cb 60 98 0c 00 00 | ...`....
    10-08-2003 18:21:55.80 - IPCP : Layer up.
    10-08-2003 18:21:55.80 - FSA : Last control protocol is up.

    Note the packet transmitted at 18:21:55.69 is a repeat of the packet
    transmitted at 18:21:55.58. It is identical apart from the 4th byte
    (identifier) and is an IPCP IP-Compression-Protocol Configure-Request
    (3rd byte = 01). At 18:21:55.80 the client receives the same packet
    transmitted back as a Configure-Ack (3rd byte = 02). IPCP configuration
    is now complete.

    Unsuccessful attempt:

    10-08-2003 18:20:51.44 - IPCP : Received and accepted compression
    protocol request f 1.
    10-08-2003 18:20:51.44 - IPCP : Received and accepted IP address of
    ca002e53.
    10-08-2003 18:20:51.44 - PPP : Transmitting Control Packet of length: 18
    10-08-2003 18:20:51.44 - Data 0000: 80 21 02 01 00 10 02 06 | .!......
    10-08-2003 18:20:51.44 - Data 0008: 00 2d 0f 01 03 06 ca 00 | .-......
    10-08-2003 18:20:51.44 - Data 0010: 2e 53 00 00 00 00 00 00 | .S......
    10-08-2003 18:20:51.44 - PPP : Received Control Packet of length: 12
    10-08-2003 18:20:51.44 - Data 0000: 80 fd 01 01 00 0a 12 06 | ........
    10-08-2003 18:20:51.44 - Data 0008: 00 00 00 01 00 00 00 00 | ........
    10-08-2003 18:20:51.44 - CCP : Received and accepted compression value 1.
    10-08-2003 18:20:51.44 - PPP : Transmitting Control Packet of length: 12
    10-08-2003 18:20:51.44 - Data 0000: 80 fd 02 01 00 0a 12 06 | ........
    10-08-2003 18:20:51.44 - Data 0008: 00 00 00 01 00 00 00 00 | ........
    10-08-2003 18:20:51.57 - PPP : Received Control Packet of length: 18
    10-08-2003 18:20:51.57 - Data 0000: 80 21 04 01 00 10 82 06 | .!......
    10-08-2003 18:20:51.57 - Data 0008: 00 00 00 00 84 06 00 00 | ........
    10-08-2003 18:20:51.57 - Data 0010: 00 00 00 00 00 00 00 00 | ........
    10-08-2003 18:20:51.57 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:20:51.57 - Data 0000: 80 21 01 02 00 1c 02 06 | .!.....
    10-08-2003 18:20:51.58 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:20:51.58 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:20:51.58 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:20:51.58 - PPP : Received Control Packet of length: 12
    10-08-2003 18:20:51.58 - Data 0000: 80 fd 02 01 00 0a 12 06 | ........
    10-08-2003 18:20:51.58 - Data 0008: 00 00 00 01 00 00 00 00 | ........
    10-08-2003 18:20:51.58 - CCP : Layer up.

    As we can see, unlike the successful connection attempt, where the IPCP
    packet setting the IP address and primary / secondary DNS addresses is
    received almost immediately after the 12 byte packet preceding the above
    message line, the client receives no further packets. The last packet
    received has the protocol bytes 80 fd (CCP protocol), 02 config-ack, 01
    identifier, 00 0A length 10 bytes (6 more to come), 12 06 00 00 00 01
    data (Microsoft PPC or PPE protocol).

    10-08-2003 18:20:54.59 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:20:54.59 - Data 0000: 80 21 01 03 00 1c 02 06 | .!.....
    10-08-2003 18:20:54.59 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:20:54.59 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:20:54.59 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:20:57.58 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:20:57.58 - Data 0000: 80 21 01 04 00 1c 02 06 | .!.....
    10-08-2003 18:20:57.58 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:20:57.58 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:20:57.58 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:00.59 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:00.59 - Data 0000: 80 21 01 05 00 1c 02 06 | .!.....
    10-08-2003 18:21:00.59 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:00.59 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:00.59 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:03.60 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:03.60 - Data 0000: 80 21 01 06 00 1c 02 06 | .!.....
    10-08-2003 18:21:03.60 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:03.60 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:03.60 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:06.62 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:06.62 - Data 0000: 80 21 01 07 00 1c 02 06 | .!.....
    10-08-2003 18:21:06.62 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:06.62 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:06.62 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:09.61 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:09.61 - Data 0000: 80 21 01 08 00 1c 02 06 | .!.....
    10-08-2003 18:21:09.61 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:09.61 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:09.61 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:12.62 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:12.62 - Data 0000: 80 21 01 09 00 1c 02 06 | .!.....
    10-08-2003 18:21:12.62 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:12.62 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:12.62 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:15.64 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:15.64 - Data 0000: 80 21 01 0a 00 1c 02 06 | .!.....
    10-08-2003 18:21:15.64 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:15.64 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:15.64 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:18.65 - PPP : Transmitting Control Packet of length: 30
    10-08-2003 18:21:18.65 - Data 0000: 80 21 01 0b 00 1c 02 06 | .!.....
    10-08-2003 18:21:18.65 - Data 0008: 00 2d 0f 01 03 06 00 00 | .-......
    10-08-2003 18:21:18.65 - Data 0010: 00 00 81 06 00 00 00 00 | ........
    10-08-2003 18:21:18.65 - Data 0018: 83 06 00 00 00 00 00 00 | ........
    10-08-2003 18:21:21.64 - IPCP : Layer finished.
    10-08-2003 18:21:21.64 - FSA : Last control protocol failed.
    10-08-2003 18:21:21.64 - FSA : No network protocols were successfuly
    negotiated.
    10-08-2003 18:21:32.36 - Remote access driver is shutting down..


    Packet analysis (8 identical packets transmitted):
    80 21 : IPCP
    01: Configure-Request
    03 - 0b (sequence): Identifier
    01 1c: length 0x001c (28), 24 more to come
    02: IP-Compression-Protocol

    These packets are repeats of the one transmitted at 18:20:51.57. The
    principal difference being that no incoming packets are received after
    this point.


    10-08-2003 18:21:21.64 - IPCP : Layer finished.
    10-08-2003 18:21:21.64 - FSA : Last control protocol failed.
    10-08-2003 18:21:21.64 - FSA : No network protocols were successfuly
    negotiated.
    10-08-2003 18:21:32.36 - Remote access driver is shutting down.


    It appears the cause of the failure to complete the connection is the
    failure of the server to respond after the client receives the final CCP
    packet.

    This appears not to be a user configuration issue.
    Mainlander, Oct 10, 2003
    #1
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