Section G.3. ICMP Parameter Problem Message Header

   

G.3 ICMP Parameter Problem Message Header

This description is taken from pages 8 and 9 of RFC 792, Internet Control Message Protocol.

Parameter Problem Message        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      |     Code      |          Checksum             |     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     |    Pointer    |                   unused                      |     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     |      Internet Header + 64 bits of Original Data Datagram      |     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+       Type          12       Code          0 = pointer indicates the error.       Checksum          The checksum is the 16-bit ones's complement of the one's        complement sum of the ICMP message starting with the ICMP Type.        For computing the checksum , the checksum field should be zero.       Pointer          If code = 0, identifies the octet where an error was detected.       Internet Header + 64 bits of Data Datagram          The internet header plus the first 64 bits of the datagram that       elicited this error response.
       


    TCP/IP Network Administration
    Advanced Topics in Global Information Management, Vol. 3 (Advanced Topics in Global Information Management Series)
    ISBN: 1591402514
    EAN: 2147483647
    Year: 2001
    Pages: 181

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