Movatterモバイル変換

NWG/RFC# 717                                 JBP  30-JUN-76 16:58  35873Assigned Network NumbersNetwork Working Group                                         Jon PostelRequest for Comments 717                                         SRI-ARCNIC 35873                                                    1 July 1976Assigned Network NumbersThis note specifies the numbers assigned to identify networks for use inthe inter-network protocol experiments.  Additional Numbers are assignedby Jon Postel [POSTEL@ISIC or (415) 326-6200 x3718].Assigned Network Numbers  Name          Decimal     Octal  ----------    -------     -----  BBNRCCnet        3           3  SanFranPRnet     7           7  ARPANET         10          12  BostonPRnet     11          13Internetwork Header Format  For convenience the current Internetwork protocol header and TCP  headers are reproduced here:  Octet Bit     Use                      (Width)    --- Beginning of protocol-independent information ---    0           Destination net          (8)    1-3         Destination host         (24)    4           Source net               (8)    5-7         Source host              (24)    8-9         Data length in octets    (16)    10          Header length in octets  (8)    11   0-3    Format                   (4)      This field selects the appropriate gateway processing and is used      to dispatch the packet to the appropriate protocol module in the      destination.  The following values are defined for this field:        0 -- Escape; protocol is specified by a subsequent field        1 -- TCP        2 -- Secure TCP        3-16 -- Not allocated        17 -- Cross internet debugging   --- End of protocol-independent information                                  1

NWG/RFC# 717                                 JBP  30-JUN-76 16:58  35873Assigned Network Numbers   --- Beginning of TCP specific information ---   11   4-7     Protocol version         (4)   12-15        Sequence number          (32)   16-17        Window                   (16)   18-20        Control (as before)      (24)   21-23        Destination port         (24)   24           Packet label for debugging(8)   25-27        Source port              (24)   28-31        Acknowledgement number   (32)   32-33        Checksum                 (16)   34-          Data   --- End of TCP specific information ---   --- Beginning of short TCP specific information ---   11   4-7     Protocol Version         (4)   12-25        Sequence number          (32)   16           Destination KID          (8)   17           Source KID               (8)   18-19        Control (no special function field)(16)   20-          Data   --- End of short TCP specific information ---                               2