what does this LCP option mean? - PPP

This is a discussion on what does this LCP option mean? - PPP ; 0000: FF 03 C0 21 |01 00 00 11 |01 04 05 C8 ,05 06 13 7F LCP Configure-Request ID len MRU len 1480 Magic Number len 0010: 21 1B ,0D 03 06 ^^^^^^^^???? what does "OD" mean? in ...

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Thread: what does this LCP option mean?

  1. what does this LCP option mean?

    0000: FF 03 C0 21 |01 00 00 11 |01 04 05 C8 ,05
    06 13 7F
    LCP Configure-Request ID len MRU len 1480 Magic Number
    len
    0010: 21 1B ,0D 03 06
    ^^^^^^^^????

    what does "OD" mean?
    in RFC 1661, i can only find types from 1 to 8.




  2. Re: what does this LCP option mean?

    in RFC 1570 - PPP LCP Extensions,i found type 13(0x0D) stand for callback


    there are only 4 operations
    Operation

    The Operation field is one octet and indicates the contents of the
    Message field.

    0 location is determined by user authentication

    1 Dialing string, the format and contents of which assumes
    configuration knowledge of the specific device which is
    making the callback.

    2 Location identifier, which may or may not be human
    readable, to be used together with the authentication
    information for a database lookup to determine the
    callback location.

    3 E.164 number.

    4 Distinguished name.

    i don't know what does 06 mean.

    "enst" дʼ news:c0en4b$ukr$1@mail.cn99.com...
    > 0000: FF 03 C0 21 |01 00 00 11 |01 04 05 C8 ,05
    > 06 13 7F
    > LCP Configure-Request ID len MRU len 1480 Magic Number
    > len
    > 0010: 21 1B ,0D 03 06
    > ^^^^^^^^????
    >
    > what does "OD" mean?
    > in RFC 1661, i can only find types from 1 to 8.
    >
    >
    >




  3. Re: what does this LCP option mean?

    in RFC 1570 - PPP LCP Extensions,i found type 13(0x0D) stand for callback

    0 1 2 3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    | Type | Length | Operation | Message ...
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

    there are only 4 operations
    Operation

    The Operation field is one octet and indicates the contents of the
    Message field.

    0 location is determined by user authentication

    1 Dialing string, the format and contents of which assumes
    configuration knowledge of the specific device which is
    making the callback.

    2 Location identifier, which may or may not be human
    readable, to be used together with the authentication
    information for a database lookup to determine the
    callback location.

    3 E.164 number.

    4 Distinguished name.

    i don't know what does 06 mean.

    "enst" дʼ news:c0en4b$ukr$1@mail.cn99.com...
    > 0000: FF 03 C0 21 |01 00 00 11 |01 04 05 C8 ,05
    > 06 13 7F
    > LCP Configure-Request ID len MRU len 1480 Magic Number
    > len
    > 0010: 21 1B ,0D 03 06
    > ^^^^^^^^????
    >
    > what does "OD" mean?
    > in RFC 1661, i can only find types from 1 to 8.
    >
    >
    >





  4. Re: what does this LCP option mean?

    "enst" writes:
    > 0000: FF 03 C0 21 |01 00 00 11 |01 04 05 C8 ,05
    > 06 13 7F
    > LCP Configure-Request ID len MRU len 1480 Magic Number
    > len
    > 0010: 21 1B ,0D 03 06
    > ^^^^^^^^????
    >
    > what does "OD" mean?
    > in RFC 1661, i can only find types from 1 to 8.


    Option 13 is callback (RFC 1570), and Operation value 6 is Microsoft's
    proprietary "CBCP" variant.

    Instead of looking through the RFCs for option numbers, you should be
    looking at the IANA registry first:

    http://www.iana.org/assignments/ppp-numbers

    If you're interested, I could also recommend a book that describes PPP
    in some detail, though I don't think that writing a PPP implementation
    from scratch is a good idea.

    --
    James Carlson, IP Systems Group
    Sun Microsystems / 1 Network Drive 71.234W Vox +1 781 442 2084
    MS UBUR02-212 / Burlington MA 01803-2757 42.497N Fax +1 781 442 1677

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