RFC1271-MIB DEFINITIONS ::= BEGIN

              IMPORTS

                  Counter                              FROM RFC1155-SMI

                  mib-2, DisplayString                 FROM RFC1213-MIB

                  OBJECT-TYPE                          FROM RFC-1212;

          --  This MIB module uses the extended OBJECT-TYPE macro as

          --  defined in [9].

          --  Remote Network Monitoring MIB

              rmon    OBJECT IDENTIFIER ::= { mib-2 16 }

              -- textual conventions

              OwnerString ::= DisplayString

              -- This data type is used to model an administratively

              -- assigned name of the owner of a resource. This

              -- information is taken from the NVT ASCII character set.

              -- It is suggested that this name contain one or more

              -- of the following:

              -- IP address, management station name, network manager's

              -- name, location, or phone number.

              -- In some cases the agent itself will be the owner of

              -- an entry.  In these cases, this string shall be set

              -- to a string starting with 'monitor'.

              --

              -- SNMP access control is articulated entirely in terms of

              -- the contents of MIB views; access to a particular SNMP

              -- object instance depends only upon its presence or

              -- absence in a particular MIB view and never upon its

              -- value or the value of related object instances. Thus,

              -- objects of this type afford resolution of resource

              -- contention only among cooperating managers; they

              -- realize no access control function with respect

              -- to uncooperative parties.

              --

              -- By convention, objects with this syntax are declared

              -- as having

              --

              --      SIZE (0..127)

              EntryStatus ::= INTEGER

                         { valid(1),

                           createRequest(2),

                           underCreation(3),

                           invalid(4)

                         }

              -- The status of a table entry.

              --

              -- Setting this object to the value invalid(4) has the

              -- effect of invalidating the corresponding entry.

              -- That is, it effectively disassociates the mapping

              -- identified with said entry.

              -- It is an implementation-specific matter as to whether

              -- the agent removes an invalidated entry from the table.

              -- Accordingly, management stations must be prepared to

              -- receive tabular information from agents that corresponds

              -- to entries currently not in use.  Proper

              -- interpretation of such entries requires examination

              -- of the relevant EntryStatus object.

              --

              -- An existing instance of this object cannot be set to

              -- createRequest(2).  This object may only be set to

              -- createRequest(2) when this instance is created.  When

              -- this object is created, the agent may wish to create

              -- supplemental object instances to complete a conceptual

              -- row in this table.  Immediately after completing the

              -- create operation, the agent must set this object to

              -- underCreation(3).

              --

              -- Entries shall exist in the underCreation(3) state until

              -- the management station is finished configuring the

              -- entry and sets this object to valid(1) or aborts,

              -- setting this object to invalid(4).  If the agent

              -- determines that an entry has been in the

              -- underCreation(3) state for an abnormally long time,

              -- it may decide that the management station has

              -- crashed.  If the agent makes this decision,

              -- it may set this object to invalid(4) to reclaim the

              -- entry.  A prudent agent will understand that the

              -- management station may need to wait for human input

              -- and will allow for that possibility in its

              -- determination of this abnormally long period.

              statistics        OBJECT IDENTIFIER ::= { rmon 1 }

              history           OBJECT IDENTIFIER ::= { rmon 2 }

              alarm             OBJECT IDENTIFIER ::= { rmon 3 }

              hosts             OBJECT IDENTIFIER ::= { rmon 4 }

              hostTopN          OBJECT IDENTIFIER ::= { rmon 5 }

              matrix            OBJECT IDENTIFIER ::= { rmon 6 }

              filter            OBJECT IDENTIFIER ::= { rmon 7 }

              capture           OBJECT IDENTIFIER ::= { rmon 8 }

              event             OBJECT IDENTIFIER ::= { rmon 9 }

          -- The Statistics Group

          --

          -- Implementation of the Statistics group is optional.

          --

          -- The statistics group contains statistics measured by the

          -- probe for each monitored interface on this device.  These

          -- statistics take the form of free running counters that

          -- start from zero when a valid entry is created.

          --

          -- This group currently has statistics defined only for

          -- Ethernet interfaces.  Each etherStatsEntry contains

          -- statistics for one Ethernet interface.  The probe must

          -- create one etherStats entry for each monitored Ethernet

          -- interface on the device.

          etherStatsTable OBJECT-TYPE

              SYNTAX SEQUENCE OF EtherStatsEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A list of Ethernet statistics entries."

              ::= { statistics 1 }

          etherStatsEntry OBJECT-TYPE

              SYNTAX EtherStatsEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A collection of statistics kept for a particular

                  Ethernet interface."

              INDEX { etherStatsIndex }

              ::= { etherStatsTable 1 }

          EtherStatsEntry ::= SEQUENCE {

              etherStatsIndex                    INTEGER (1..65535),

              etherStatsDataSource               OBJECT IDENTIFIER,

              etherStatsDropEvents               Counter,

              etherStatsOctets                   Counter,

              etherStatsPkts                     Counter,

              etherStatsBroadcastPkts            Counter,

              etherStatsMulticastPkts            Counter,

              etherStatsCRCAlignErrors           Counter,

              etherStatsUndersizePkts            Counter,

              etherStatsOversizePkts             Counter,

              etherStatsFragments                Counter,

              etherStatsJabbers                  Counter,

              etherStatsCollisions               Counter,

              etherStatsPkts64Octets             Counter,

              etherStatsPkts65to127Octets        Counter,

              etherStatsPkts128to255Octets       Counter,

              etherStatsPkts256to511Octets       Counter,

              etherStatsPkts512to1023Octets      Counter,

              etherStatsPkts1024to1518Octets     Counter,

              etherStatsOwner                    OwnerString,

              etherStatsStatus                   INTEGER

          }

          etherStatsIndex OBJECT-TYPE

              SYNTAX INTEGER (1..65535)

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The value of this object uniquely identifies this

                  etherStats entry."

              ::= { etherStatsEntry 1 }

          etherStatsDataSource OBJECT-TYPE

              SYNTAX OBJECT IDENTIFIER

              ACCESS read-write

              STATUS mandatory

              DESCRIPTION

                  "This object identifies the source of the data that

                  this etherStats entry is configured to analyze.  This

                  source can be any ethernet 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

                  etherStatsStatus object is equal to valid(1)."

              ::= { etherStatsEntry 2 }

          etherStatsDropEvents OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of events in which packets

                  were dropped by the probe due to lack of resources.

                  Note that this number is not necessarily the number of

                  packets dropped; it is just the number of times this

                  condition has been detected."

              ::= { etherStatsEntry 3 }

          etherStatsOctets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of octets of data (including

                  those in bad packets) received on the

                  network (excluding framing bits but including

                  FCS octets)."

              ::= { etherStatsEntry 4 }

          etherStatsPkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error packets)

                  received."

              ::= { etherStatsEntry 5 }

          etherStatsBroadcastPkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of good packets received that were

                  directed to the broadcast address."

              ::= { etherStatsEntry 6 }

          etherStatsMulticastPkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of good packets received that were

                  directed to a multicast address.  Note that this

                  number does not include packets directed to the

                  broadcast address."

              ::= { etherStatsEntry 7 }

          etherStatsCRCAlignErrors OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets received that

                  had a length (excluding framing bits, but

                  including FCS octets) of between 64 and 1518

                  octets, inclusive, but were not an integral number

                  of octets in length or had a bad Frame Check

                  Sequence (FCS)."

              ::= { etherStatsEntry 8 }

          etherStatsUndersizePkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets received that were

                  less than 64 octets long (excluding framing bits,

                  but including FCS octets) and were otherwise well

                  formed."

              ::= { etherStatsEntry 9 }

          etherStatsOversizePkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets received that were

                  longer than 1518 octets (excluding framing bits,

                  but including FCS octets) and were otherwise

                  well formed."

              ::= { etherStatsEntry 10 }

          etherStatsFragments OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets received that were not an

                  integral number of octets in length or that had a bad

                  Frame Check Sequence (FCS), and were less than 64

                  octets in length (excluding framing bits but

                  including FCS octets)."

              ::= { etherStatsEntry 11 }

          etherStatsJabbers OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets received that were

                  longer than 1518 octets (excluding framing bits,

                  but including FCS octets), and were not an

                  integral number of octets in length or had

                  a bad Frame Check Sequence (FCS)."

              ::= { etherStatsEntry 12 }

          etherStatsCollisions OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The best estimate of the total number of collisions

                  on this Ethernet segment."

              ::= { etherStatsEntry 13 }

          etherStatsPkts64Octets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error

                  packets) received that were 64 octets in length

                  (excluding framing bits but including FCS octets)."

              ::= { etherStatsEntry 14 }

          etherStatsPkts65to127Octets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error

                  packets) received that were between

                  65 and 127 octets in length inclusive

                  (excluding framing bits but including FCS octets)."

              ::= { etherStatsEntry 15 }

          etherStatsPkts128to255Octets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error

                  packets) received that were between

                  128 and 255 octets in length inclusive

                  (excluding framing bits but including FCS octets)."

              ::= { etherStatsEntry 16 }

          etherStatsPkts256to511Octets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error

                  packets) received that were between

                  256 and 511 octets in length inclusive

                  (excluding framing bits but including FCS octets)."

              ::= { etherStatsEntry 17 }

          etherStatsPkts512to1023Octets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error

                  packets) received that were between

                  512 and 1023 octets in length inclusive

                  (excluding framing bits but including FCS octets)."

              ::= { etherStatsEntry 18 }

          etherStatsPkts1024to1518Octets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets (including error

                  packets) received that were between

                  1024 and 1518 octets in length inclusive

                  (excluding framing bits but including FCS octets)."

              ::= { etherStatsEntry 19 }

          etherStatsOwner 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."

              ::= { etherStatsEntry 20 }

          etherStatsStatus OBJECT-TYPE

              SYNTAX EntryStatus

              ACCESS read-write

              STATUS mandatory

              DESCRIPTION

                  "The status of this etherStats entry."

              ::= { etherStatsEntry 21 }

          -- The History Group

          -- Implementation of the History group is optional.

          --

          -- The history group records periodic statistical samples from

          -- a network and stores them for later retrieval.  The

          -- historyControl table stores configuration entries that each

          -- define an interface, polling period, and other parameters.

          -- Once samples are taken, their data is stored in an entry

          -- in a media-specific table.  Each such entry defines one

          -- sample, and is associated with the historyControlEntry that

          -- caused the sample to be taken.  Currently the only media-

          -- specific table defined is the etherHistoryTable, for

          -- Ethernet networks.

          --

          -- If the probe keeps track of the time of day, it should

          -- start the first sample of the history at a time such that

          -- when the next hour of the day begins, a sample is

          -- started at that instant.  This tends to make more

          -- user-friendly reports, and enables comparison of reports

          -- from different probes that have relatively accurate time

          -- of day.

          --

          -- The monitor is encouraged to add two history control entries

          -- per monitored interface upon initialization that describe

          -- a short term and a long term polling period.  Suggested

          -- parameters are 30 seconds for the short term polling

          -- period and 30 minutes for the long term period.

          historyControlTable OBJECT-TYPE

              SYNTAX SEQUENCE OF HistoryControlEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A list of history control entries."

              ::= { history 1 }

          historyControlEntry OBJECT-TYPE

              SYNTAX HistoryControlEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A list of parameters that set up a periodic

                  sampling of statistics."

              INDEX { historyControlIndex }

              ::= { historyControlTable 1 }

          HistoryControlEntry ::= SEQUENCE {

              historyControlIndex             INTEGER (1..65535),

              historyControlDataSource        OBJECT IDENTIFIER,

              historyControlBucketsRequested  INTEGER (1..65535),

              historyControlBucketsGranted    INTEGER (1..65535),

              historyControlInterval          INTEGER (1..3600),

              historyControlOwner             OwnerString,

              historyControlStatus            INTEGER

          }

          historyControlIndex OBJECT-TYPE

              SYNTAX INTEGER (1..65535)

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "An index that uniquely identifies an entry in the

                  historyControl table.  Each such entry defines a

                  set of samples at a particular interval for an

                  interface on the device."

              ::= { historyControlEntry 1 }

          historyControlDataSource OBJECT-TYPE

              SYNTAX OBJECT IDENTIFIER

              ACCESS read-write

              STATUS mandatory

              DESCRIPTION

                  "This object identifies the source of the data for

                  which historical data was collected and

                  placed in a media-specific table on behalf of this

                  historyControlEntry.  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

                  historyControlStatus object is equal to valid(1)."

              ::= { historyControlEntry 2 }

          historyControlBucketsRequested OBJECT-TYPE

              SYNTAX INTEGER (1..65535)

              ACCESS read-write

              STATUS mandatory

              DESCRIPTION

                  "The requested number of discrete time intervals

                  over which data is to be saved in the part of the

                  media-specific table associated with this

                  historyControl entry.

                  When this object is created or modified, the probe

                  should set historyControlBucketsGranted as closely to

                  this object as is possible for the particular probe

                  implementation and available resources."

              DEFVAL { 50 }

              ::= { historyControlEntry 3 }

          historyControlBucketsGranted OBJECT-TYPE

              SYNTAX INTEGER (1..65535)

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of discrete sampling intervals

                  over which data shall be saved in the part of

                  the media-specific table associated with this

                  historyControl entry.

                  When the associated historyControlBucketsRequested

                  object is created or modified, the probe

                  should set this object as closely to the requested

                  value as is possible for the particular

                  probe implementation and available resources.  The

                  probe must not lower this value except as a result

                  of a modification to the associated

                  historyControlBucketsRequested object.

                  There will be times when the actual number of

                  buckets associated with this entry is less than

                  the value of this object.  In this case, at the

                  end of each sampling interval, a new bucket will

                  be added to the media-specific table.

                  When the number of buckets reaches the value of

                  this object and a new bucket is to be added to the

                  media-specific table, the oldest bucket associated

                  with this historyControlEntry shall be deleted by

                  the agent so that the new bucket can be added.

                  When the value of this object changes to a value less

                  than the current value, entries are deleted

                  from the media-specific table associated with this

                  historyControlEntry.  Enough of the oldest of these

                  entries shall be deleted by the agent so that their

                  number remains less than or equal to the new value of

                  this object.

                  When the value of this object changes to a value

                  greater than the current value, the number of

                  associated media-specific entries may be allowed

                  to grow."

              ::= { historyControlEntry 4 }

          historyControlInterval OBJECT-TYPE

              SYNTAX INTEGER (1..3600)

              ACCESS read-write

              STATUS mandatory

              DESCRIPTION

                  "The interval in seconds over which the data is

                  sampled for each bucket in the part of the

                  media-specific table associated with this

                  historyControl entry.  This interval can

                  be set to any number of seconds between 1 and

                  3600 (1 hour).

                  Because the counters in a bucket may overflow at their

                  maximum value with no indication, a prudent manager

                  will take into account the possibility of overflow

                  in any of the associated counters.  It is important

                  to consider the minimum time in which any counter

                  could overflow on a particular media type and set

                  the historyControlInterval object to a value less

                  than this interval.  This is typically most

                  important for the 'octets' counter in any

                  media-specific table.  For example, on an Ethernet

                  network, the etherHistoryOctets counter could overflow

                  in about one hour at the Ethernet's maximum

                  utilization.

                  This object may not be modified if the associated

                  historyControlStatus object is equal to valid(1)."

              DEFVAL { 1800 }

              ::= { historyControlEntry 5 }

          historyControlOwner 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."

              ::= { historyControlEntry 6 }

          historyControlStatus OBJECT-TYPE

              SYNTAX EntryStatus

              ACCESS read-write

              STATUS mandatory

              DESCRIPTION

                  "The status of this historyControl entry.

                  Each instance of the media-specific table associated

                  with this historyControlEntry will be deleted by the

                  agent if this historyControlEntry is not equal to

                  valid(1)."

              ::= { historyControlEntry 7 }

          -- Ether History table

          etherHistoryTable OBJECT-TYPE

              SYNTAX SEQUENCE OF EtherHistoryEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A list of Ethernet history entries."

              ::= { history 2 }

          etherHistoryEntry OBJECT-TYPE

              SYNTAX EtherHistoryEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "An historical sample of Ethernet statistics on a

                  particular Ethernet interface.  This sample is

                  associated with the historyControlEntry which set

                  up the parameters for a regular collection of these

                  samples."

              INDEX { etherHistoryIndex , etherHistorySampleIndex }

              ::= { etherHistoryTable 1 }

          EtherHistoryEntry ::= SEQUENCE {

              etherHistoryIndex                 INTEGER (1..65535),

              etherHistorySampleIndex           INTEGER,

              etherHistoryIntervalStart         TimeTicks,

              etherHistoryDropEvents            Counter,

              etherHistoryOctets                Counter,

              etherHistoryPkts                  Counter,

              etherHistoryBroadcastPkts         Counter,

              etherHistoryMulticastPkts         Counter,

              etherHistoryCRCAlignErrors        Counter,

              etherHistoryUndersizePkts         Counter,

              etherHistoryOversizePkts          Counter,

              etherHistoryFragments             Counter,

              etherHistoryJabbers               Counter,

              etherHistoryCollisions            Counter,

              etherHistoryUtilization           INTEGER (0..10000)

          }

          etherHistoryIndex OBJECT-TYPE

              SYNTAX INTEGER (1..65535)

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The history of which this entry is a part.  The

                  history identified by a particular value of this

                  index is the same history as identified

                  by the same value of historyControlIndex."

              ::= { etherHistoryEntry 1 }

          etherHistorySampleIndex OBJECT-TYPE

              SYNTAX INTEGER

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "An index that uniquely identifies the particular

                  sample this entry represents among all samples

                  associated with the same historyControlEntry.

                  This index starts at 1 and increases by one

                  as each new sample is taken."

              ::= { etherHistoryEntry 2 }

          etherHistoryIntervalStart OBJECT-TYPE

              SYNTAX TimeTicks

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The value of sysUpTime at the start of the interval

                  over which this sample was measured.  If the probe

                  keeps track of the time of day, it should start

                  the first sample of the history at a time such that

                  when the next hour of the day begins, a sample is

                  started at that instant.  Note that following this

                  rule may require the probe to delay collecting the

                  first sample of the history, as each sample must be

                  of the same interval.  Also note that the sample which

                  is currently being collected is not accessible in this

                  table until the end of its interval."

              ::= { etherHistoryEntry 3 }

          etherHistoryDropEvents OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of events in which packets

                  were dropped by the probe due to lack of resources

                  during this interval.  Note that this number is not

                  necessarily the number of packets dropped, it is just

                  the number of times this condition has been detected."

              ::= { etherHistoryEntry 4 }

          etherHistoryOctets OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of octets of data (including

                  those in bad packets) received on the

                  network (excluding framing bits but including

                  FCS octets)."

              ::= { etherHistoryEntry 5 }

          etherHistoryPkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of packets (including error packets)

                  received during this sampling interval."

              ::= { etherHistoryEntry 6 }

          etherHistoryBroadcastPkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of good packets received during this

                  sampling interval that were directed to the

                  broadcast address."

              ::= { etherHistoryEntry 7 }

          etherHistoryMulticastPkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of good packets received during this

                  sampling interval that were directed to a

                  multicast address.  Note that this number does not

                  include packets addressed to the broadcast address."

              ::= { etherHistoryEntry 8 }

          etherHistoryCRCAlignErrors OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of packets received during this

                  sampling interval that had a length (excluding

                  framing bits but including FCS octets) between

                  64 and 1518 octets, inclusive, but were not an

                  integral number of octets in length or had a

                  bad Frame Check Sequence (FCS)."

              ::= { etherHistoryEntry 9 }

          etherHistoryUndersizePkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of packets received during this

                  interval that were less than 64 octets long

                  (excluding framing bits but including FCS

                  octets) and were otherwise well formed."

              ::= { etherHistoryEntry 10 }

          etherHistoryOversizePkts OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of packets received during this

                  interval that were longer than 1518 octets

                  (excluding framing bits but including FCS

                  octets) but were otherwise well formed."

              ::= { etherHistoryEntry 11 }

          etherHistoryFragments OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The total number of packets received during this

                  sampling interval that were not an integral

                  number of octets in length or that

                  had a bad Frame Check Sequence (FCS), and

                  were less than 64 octets in length (excluding

                  framing bits but including FCS octets)."

              ::= { etherHistoryEntry 12 }

          etherHistoryJabbers OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The number of packets received during this

                  interval that were longer than 1518 octets

                  (excluding framing bits but including FCS octets),

                  and were not an integral number of octets in

                  length or had a bad Frame Check Sequence (FCS)."

              ::= { etherHistoryEntry 13 }

          etherHistoryCollisions OBJECT-TYPE

              SYNTAX Counter

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The best estimate of the total number of collisions

                  on this Ethernet segment during this interval."

              ::= { etherHistoryEntry 14 }

          etherHistoryUtilization OBJECT-TYPE

              SYNTAX INTEGER (0..10000)

              ACCESS read-only

              STATUS mandatory

              DESCRIPTION

                  "The best estimate of the mean physical layer

                  network utilization on this interface during this

                  interval, in hundredths of a percent."

              ::= { etherHistoryEntry 15 }

          -- The Alarm Group

          -- Implementation of the Alarm group is optional.

          --

          -- The Alarm Group requires the implementation of the Event

          -- group.

          --

          -- The Alarm group periodically takes statistical samples from

          -- variables in the probe and compares them to thresholds

          -- that have been configured.  The alarm table stores

          -- configuration entries that each define a variable,

          -- polling period, and threshold parameters.  If a sample is

          -- found to cross the threshold values, an event is

          -- generated.  Only variables that resolve to an ASN.1

          -- primitive type of INTEGER (INTEGER, Counter,

          -- Gauge, or TimeTicks) may be monitored in this way.

          --

          -- This function has a hysteresis mechanism to limit the

          -- generation of events.  This mechanism generates one event

          -- as a threshold is crossed in the appropriate direction.

          -- No more events are generated for that threshold until the

          -- opposite threshold is crossed.

          --

          -- In the case of a sampling a deltaValue, a probe may

          -- implement this mechanism with more precision if it takes

          -- a delta sample twice per period, each time comparing the

          -- sum of the latest two samples to the threshold.  This

          -- allows the detection of threshold crossings

          -- that span the sampling boundary.  Note that this does not

          -- require any special configuration of the threshold value.

          -- It is suggested that probes implement this more precise

          -- algorithm.

          alarmTable OBJECT-TYPE

              SYNTAX SEQUENCE OF AlarmEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A list of alarm entries."

              ::= { alarm 1 }

          alarmEntry OBJECT-TYPE

              SYNTAX AlarmEntry

              ACCESS not-accessible

              STATUS mandatory

              DESCRIPTION

                  "A list of parameters that set up a periodic checking

                  for alarm conditions."

              INDEX { alarmIndex }

              ::= { alarmTable 1 }

          AlarmEntry ::= SEQUENCE {

              alarmIndex                    INTEGER (1..65535),

              alarmInterval                 INTEGER,

              alarmVariable                 OBJECT IDENTIFIER,

              alarmSampleType               INTEGER,

              alarmValue                    INTEGER,

              alarmStartupAlarm             INTEGER,

              alarmRisingThreshold          INTEGER,

              alarmFallingThreshold         INTEGER,