rfc1271-mib

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          -- The hostTimeTable has two important uses.  The first is the
          -- fast download of this potentially large table.  Because the
          -- index of this table runs from 1 to the size of the table,
          -- inclusive, its values are predictable.  This allows very
          -- efficient packing of variables into SNMP PDU's and allows
          -- a table transfer to have multiple packets outstanding.
          -- These benefits increase transfer rates tremendously.

          -- The second use of the hostTimeTable is the efficient
          -- discovery by the management station of new entries added
          -- to the table.  After the management station has
          -- downloaded the entire table, it knows that new entries
          -- will be added immediately after the end of the current
          -- table.  It can thus detect new entries there
          -- and retrieve them easily.

          -- Because the association between hostTimeCreationOrder and
          -- hostTimeEntry may be broken at any time, the management
          -- station must monitor the related hostControlLastDeleteTime
          -- object.  When the management station thus detects a deletion,
          -- it must assume that any such associations have been broken,
          -- and invalidate any it has stored locally.  This includes
          -- restarting any download of the hostTimeTable that may have
          -- been in progress, as well as rediscovering the end of the
          -- hostTimeTable so that it may detect new entries.  If the
          -- management station does not detect the broken association,
          -- it may continue to refer to a particular host by its
          -- creationOrder while unwittingly retrieving the data
          -- associated with another host entirely.  If this happens
          -- while downloading the host table, the management station
          -- may fail to download all of the entries in the table.


          hostControlTable OBJECT-TYPE
              SYNTAX SEQUENCE OF HostControlEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                  "A list of host table control entries."
              ::= { hosts 1 }

          hostControlEntry OBJECT-TYPE
              SYNTAX HostControlEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                  "A list of parameters that set up the discovery of
                  hosts on a particular interface and the collection
                  of statistics about these hosts."
              INDEX { hostControlIndex }
              ::= { hostControlTable 1 }

          HostControlEntry ::= SEQUENCE {
              hostControlIndex            INTEGER (1..65535),
              hostControlDataSource       OBJECT IDENTIFIER,
              hostControlTableSize        INTEGER,
              hostControlLastDeleteTime   TimeTicks,
              hostControlOwner            OwnerString,
              hostControlStatus           EntryStatus
          }

          hostControlIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "An index that uniquely identifies an entry in the
                  hostControl table.  Each such entry defines
                  a function that discovers hosts on a particular
                  interface and places statistics about them in the
                  hostTable and the hostTimeTable on behalf of this
                  hostControlEntry."
              ::= { hostControlEntry 1 }

          hostControlDataSource OBJECT-TYPE
              SYNTAX OBJECT IDENTIFIER
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                  "This object identifies the source of the data for
                  this instance of the host function.  This source
                  can be any interface on this device.  In order
                  to identify a particular interface, this object shall
                  identify the instance of the ifIndex object, defined
                  in [4,6], for the desired interface.  For example,
                  if an entry were to receive data from interface #1,
                  this object would be set to ifIndex.1.

                  The statistics in this group reflect all packets
                  on the local network segment attached to the
                  identified interface.

                  This object may not be modified if the associated
                  hostControlStatus object is equal to valid(1)."
              ::= { hostControlEntry 2 }

          hostControlTableSize OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of hostEntries in the hostTable and the
                  hostTimeTable associated with this hostControlEntry."
              ::= { hostControlEntry 3 }

          hostControlLastDeleteTime OBJECT-TYPE
              SYNTAX TimeTicks
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The value of sysUpTime when the last entry
                  was deleted from the portion of the hostTable
                  associated with this hostControlEntry.  If no
                  deletions have occurred, this value shall be zero."
              ::= { hostControlEntry 4 }

          hostControlOwner OBJECT-TYPE
              SYNTAX OwnerString
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                  "The entity that configured this entry and is
                  therefore using the resources assigned to it."
              ::= { hostControlEntry 5 }

          hostControlStatus OBJECT-TYPE
              SYNTAX EntryStatus
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                  "The status of this hostControl entry.

                  If this object is not equal to valid(1), all
                  associated entries in the hostTable,
                  hostTimeTable, and the hostTopNTable shall be
                  deleted by the agent."
              ::= { hostControlEntry 6 }

          hostTable OBJECT-TYPE
              SYNTAX SEQUENCE OF HostEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                  "A list of host entries."
              ::= { hosts 2 }

          hostEntry OBJECT-TYPE
              SYNTAX HostEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                  "A collection of statistics for a particular host
                  that has been discovered on an interface of this
                  device."
              INDEX { hostIndex, hostAddress }
              ::= { hostTable 1 }

          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 address of this host."
              ::= { hostEntry 1 }

          hostCreationOrder OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "An index that defines the relative ordering of
                  the creation time of hosts captured for a
                  particular hostControlEntry.  This index shall
                  be between 1 and N, where N is the value of
                  the associated hostControlTableSize.  The ordering
                  of the indexes is based on the order of each entry's
                  insertion into the table, in which entries added
                  earlier have a lower index value than entries added
                  later.

                  It is important to note that the order for a
                  particular entry may change as an (earlier) entry
                  is deleted from the table.  Because this order may
                  change, management stations should make use of the
                  hostControlLastDeleteTime variable in the
                  hostControlEntry associated with the relevant
                  portion of the hostTable.  By observing
                  this variable, the management station may detect
                  the circumstances where a previous association
                  between a value of hostCreationOrder
                  and a hostEntry may no longer hold."
              ::= { hostEntry 2 }

          hostIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The set of collected host statistics of which
                  this entry is a part.  The set of hosts
                  identified by a particular value of this
                  index is associated with the hostControlEntry
                  as identified by the same value of hostControlIndex."
              ::= { hostEntry 3 }

          hostInPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of packets without errors transmitted to
                  this address since it was added to the hostTable."
              ::= { hostEntry 4 }

          hostOutPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of packets including errors transmitted
                  by this address since it was added to the hostTable."
              ::= { hostEntry 5 }

          hostInOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of octets transmitted to this address
                  since it was added to the hostTable (excluding
                  framing bits but including FCS octets), except for
                  those octets in packets that contained errors."
              ::= { hostEntry 6 }

          hostOutOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of octets transmitted by this address
                  since it was added to the hostTable (excluding
                  framing bits but including FCS octets), including
                  those octets in packets that contained errors."
              ::= { hostEntry 7 }

          hostOutErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of error packets transmitted by this
                  address since this host was added to the hostTable."
              ::= { hostEntry 8 }

          hostOutBroadcastPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of good packets transmitted by this
                  address that were directed to the broadcast address
                  since this host was added to the hostTable."
              ::= { hostEntry 9 }

          hostOutMulticastPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                  "The number of good packets transmitted by this
                  address that were directed to a multicast address
                  since this host was added to the hostTable.
                  Note that this number does not include packets
                  directed to the broadcast address."
              ::= { hostEntry 10 }


          -- host Time Table

          hostTimeTable OBJECT-TYPE
              SYNTAX SEQUENCE OF H