Ref: 20570002

Title: Ethernet Packet Description

Date: 7/27/90



Copyright 3Com Corporation, 1991.  All rights reserved.



<-------1 Byte------->

0                    7               DESCRIPTION

 ____________________   ======================================

|__                __|  Address of the next station that will

|__   Immediate    __|  receive the packet.  The address of the

|__  Destination   __|  final destination station is specified in

|__                __|  the "destination host" field of the IDP

|__                __|  packet.

|____________________|  ======================================

|__                __|

|__   Immediate    __|  Address of the last station that the

|__    Source      __|  packet came from.

|__                __|

|__                __|

|__                __|

|____________________|  ======================================

|__     Packet     __|

|__      Type      __|

|____________________|

|                    |

|                    |

|       "DATA"       |

|    or IDP Packet   |

|        when        |

|  Packet Type=0600  |

|                    |

|                    |

|                    |

|                    |

|____________________|  ======================================

|__                __| Cyclic Redundancy Check Number.  This is

|__      CRC       __| used to check for transmission errors.

|__                __| (Note that these bytes are generated and

|____________________| stripped off by the hardware and are not

                       available to any higher layers of software.)



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