6.7. The ICMP Group

          -- the ICMP group

          -- Implementation of the ICMP group is mandatory for all
          -- systems.

          icmpInMsgs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The total number of ICMP messages which the
                      entity received.  Note that this counter includes
                      all those counted by icmpInErrors."
              ::= { icmp 1 }

          icmpInErrors OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP messages which the entity
                      received but determined as having ICMP-specific
                      errors (bad ICMP checksums, bad length, etc.)."
              ::= { icmp 2 }

          icmpInDestUnreachs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Destination Unreachable
                      messages received."
              ::= { icmp 3 }

          icmpInTimeExcds OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Time Exceeded messages
                      received."
              ::= { icmp 4 }

          icmpInParmProbs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Parameter Problem messages
                      received."
              ::= { icmp 5 }

          icmpInSrcQuenchs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Source Quench messages
                      received."
              ::= { icmp 6 }

          icmpInRedirects OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Redirect messages received."
              ::= { icmp 7 }

          icmpInEchos OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Echo (request) messages
                      received."
              ::= { icmp 8 }

          icmpInEchoReps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Echo Reply messages received."
              ::= { icmp 9 }

          icmpInTimestamps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Timestamp (request) messages
                      received."
              ::= { icmp 10 }

          icmpInTimestampReps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Timestamp Reply messages
                      received."
              ::= { icmp 11 }

          icmpInAddrMasks OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Address Mask Request messages
                      received."
              ::= { icmp 12 }

          icmpInAddrMaskReps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Address Mask Reply messages
                      received."
              ::= { icmp 13 }

          icmpOutMsgs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The total number of ICMP messages which this
                      entity attempted to send.  Note that this counter
                      includes all those counted by icmpOutErrors."
              ::= { icmp 14 }

          icmpOutErrors OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP messages which this entity did
                      not send due to problems discovered within ICMP
                      such as a lack of buffers.  This value should not
                      include errors discovered outside the ICMP layer
                      such as the inability of IP to route the resultant
                      datagram.  In some implementations there may be no
                      types of error which contribute to this counter's
                      value."
              ::= { icmp 15 }

          icmpOutDestUnreachs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Destination Unreachable
                      messages sent."
              ::= { icmp 16 }

          icmpOutTimeExcds OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Time Exceeded messages sent."
              ::= { icmp 17 }

          icmpOutParmProbs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Parameter Problem messages
                      sent."
              ::= { icmp 18 }

          icmpOutSrcQuenchs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Source Quench messages sent."
              ::= { icmp 19 }

          icmpOutRedirects OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Redirect messages sent.  For a
                      host, this object will always be zero, since hosts
                      do not send redirects."
              ::= { icmp 20 }

          icmpOutEchos OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Echo (request) messages sent."
              ::= { icmp 21 }

          icmpOutEchoReps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Echo Reply messages sent."
              ::= { icmp 22 }

          icmpOutTimestamps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Timestamp (request) messages
                      sent."
              ::= { icmp 23 }

          icmpOutTimestampReps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Timestamp Reply messages
                      sent."
              ::= { icmp 24 }

          icmpOutAddrMasks OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Address Mask Request messages
                      sent."
              ::= { icmp 25 }

          icmpOutAddrMaskReps OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of ICMP Address Mask Reply messages
                      sent."
              ::= { icmp 26 }