Toronto IETF, July 1994

Presented by Venkat of HP as possible changes to RMON.  In particular,
a way to include network address information in the RMON structure and
to handle variable length headers in the filter area.


Host, Matrix Addresses
----------------------

Most of existing MIB retained, except "physical address" changed to
"physical and/or network address."  Address representation is described
in next section.

          HostEntry ::= SEQUENCE {
              hostAddress             OCTET STRING,
              hostCreationOrder       INTEGER (1..65535),
              hostIndex               INTEGER (1..65535),
              hostInPkts              Counter,
              hostOutPkts             Counter,
              hostInOctets            Counter,
              hostOutOctets           Counter,
              hostOutErrors           Counter,
              hostOutBroadcastPkts    Counter,
              hostOutMulticastPkts    Counter
          }

          hostAddress OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The physical and/or network address of this host."
              ::= { hostEntry 1 }

          hostTopNAddress OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The physical and/or network address of this host."
              ::= { hostTopNEntry 3 }

          MatrixSDEntry ::= SEQUENCE {
              matrixSDSourceAddress       OCTET STRING,
              matrixSDDestAddress         OCTET STRING,
              matrixSDIndex               INTEGER (1..65535),
              matrixSDPkts                Counter,
              matrixSDOctets              Counter,
              matrixSDErrors              Counter
          }

          matrixSDSourceAddress OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The source physical and/or network address."
              ::= { matrixSDEntry 1 }


          matrixSDDestAddress OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The destination physical and/or network address."
              ::= { matrixSDEntry 2 }

          MatrixDSEntry ::= SEQUENCE {
              matrixDSSourceAddress       OCTET STRING,
              matrixDSDestAddress         OCTET STRING,
              matrixDSIndex               INTEGER (1..65535),
              matrixDSPkts                Counter,
              matrixDSOctets              Counter,
              matrixDSErrors              Counter
          }

          matrixDSSourceAddress OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The source physical and/or network address."
              ::= { matrixDSEntry 1 }

          matrixDSDestAddress OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The destination physical and/or network address."
              ::= { matrixDSEntry 2 }

Address Representation
----------------------

Addresses are represented as Type followed by Type Specific Address:

Type and address is one of the following:


	TYPE		ADDRESS
	
	MAC		[six bytes of physical address]

	NET		[net-type][len=x][x bytes of network address]

	MAC-NET		[len=6][six-bytes of physical address]
			[net-type][len=x][x bytes of network address]

	NET-MAC		[net-type][len=x][x bytes of network address]
			[len=6][six-bytes of physical address]


Filter Table extension
----------------------

Filter table extension to handle the problem of variable length
headers in protocol layers.

          FilterEntry ::= SEQUENCE {
              filterIndex                 INTEGER (1..65535),
              filterChannelIndex          INTEGER (1..65535),
              filterProtocolBase          OCTET STRING,
              filterPktDataOffset         INTEGER,
              filterPktData               OCTET STRING,
              filterPktDataMask           OCTET STRING,
              filterPktDataNotMask        OCTET STRING,
              filterPktStatus             INTEGER,
              filterPktStatusMask         INTEGER,
              filterPktStatusNotMask      INTEGER,
              filterOwner                 OwnerString,
              filterStatus                INTEGER
          }

          filterProtocolBase OBJECT-TYPE
              SYNTAX OCTET STRING
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                  "A specification of protocol base from which offsets are
		  measured.  Protocol base is specified as a sequence of
		  [len][[level][value][level][value]...] pairs.
		  Such level-value pairs identifies (from the lowest protocol
		  level onwards) a sequence of protocol layers the filter
		  matching engine must take the packet through.
		  If len is set to zero, packets will be matched from the
		  beginning of the frame.

                  This object may not be modified if the associated
                  filterStatus object is equal to valid(1)."
              DEFVAL { [len=0] }
              ::= { filterEntry 3 }