-- extracted from draft-liuyunxin-hnmp-proto-00.txt
-- at Fri Jan 26 12:18:44 2001

          Draft-HNMP DEFINITIONS ::= BEGIN

          IMPORTS
              ObjectName, ObjectSyntax, TimeTicks
                  FROM RFC1155-SMI;


          -- top-level message

          Message ::=
                  SEQUENCE {
                      version          -- version-1 for this draft
                          INTEGER {
                              version-1(0)
                          },

                      data       
                          PDUs     
                  }


          -- protocol data units

          PDUs ::=
                  CHOICE {
                      register
                          Register-PDU,

                      update
                          Update-PDU,

                      response
                          Response-PDU,

                      set
                          Set-PDU,

                      trap
                          Trap-PDU
                       }

          -- PDUs

          Register-PDU ::=
              [0]
                  IMPLICIT SEQUENCE {
                      request-id
                          RequestID,

                      variable-bindings
                          VarBindList
                  }

          Update-PDU ::=
              [1]
                  IMPLICIT SEQUENCE {
                      request-id
                          RequestID,

                      variable-bindings
                          VarBindList
                  }

          Set-PDU ::=
              [2]
                  IMPLICIT SEQUENCE {
                      request-id
                          RequestID,

                      variable-bindings
                          VarBindList
                  }

          Response-PDU ::=
              [3]
                  IMPLICIT SEQUENCE {
                      request-id
                          RequestID,

                      error-status
                          ErrorStatus,

                      error-index
                          ErrorIndex,

                      variable-bindings
                          VarBindList
                  }

          Trap-PDU ::=
              [4]
                   IMPLICIT SEQUENCE {
                      enterprise          -- type of object generating
                                          -- trap, see hnmpSysObjectID
                          OBJECT IDENTIFIER,

                      generic-trap        -- generic trap type
                          INTEGER {
                              restart(0),
                              linkDown(1),
                              linkUp(2),
                              enterpriseSpecific(3)
                          },

                      specific-trap     -- specific code, present even
                          INTEGER,      -- if generic-trap is not
                                        -- enterpriseSpecific

                      time-stamp    -- time elapsed between the last
                        TimeTicks,  -- (re)initialization of the network
                                    -- entity and the generation of the
                                    -- trap

                  }

          -- variable bindings

          VarBind ::=
                  SEQUENCE {
                      name
                          ObjectName,

                      value
                          ObjectSyntax
                  }

         VarBindList ::=
                  SEQUENCE OF
                     VarBind

          -- request/response information

          RequestID ::=
                  INTEGER

          ErrorStatus ::=
                  INTEGER {
                      noError(0),
                      tooBig(1),
                      noSuchName(2),
                      badValue(3),
                      readOnly(4),
                      noSuchEntry(5)
                      genErr(6)
                  }

          ErrorIndex ::=
                  INTEGER

          END