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RMON-MIB
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RMON-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, OBJECT-IDENTITY,
NOTIFICATION-TYPE, mib-2, Counter32,
Integer32, TimeTicks FROM SNMPv2-SMI
TEXTUAL-CONVENTION, DisplayString FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP FROM SNMPv2-CONF;
-- Remote Network Monitoring MIB
rmonMibModule MODULE-IDENTITY
LAST-UPDATED "200005110000Z" -- 11 May, 2000
ORGANIZATION "IETF RMON MIB Working Group"
CONTACT-INFO
"Steve Waldbusser
Phone: +1-650-948-6500
Fax: +1-650-745-0671
Email: [email protected]"
DESCRIPTION
"Remote network monitoring devices, often called
monitors or probes, are instruments that exist for
the purpose of managing a network. This MIB defines
objects for managing remote network monitoring devices."
REVISION "200005110000Z" -- 11 May, 2000
DESCRIPTION
"Reformatted into SMIv2 format.
This version published as RFC 2819."
REVISION "199502010000Z" -- 1 Feb, 1995
DESCRIPTION
"Bug fixes, clarifications and minor changes based on
implementation experience, published as RFC1757 [18].
Two changes were made to object definitions:
1) A new status bit has been defined for the
captureBufferPacketStatus object, indicating that the
packet order within the capture buffer may not be identical to
the packet order as received off the wire. This bit may only
be used for packets transmitted by the probe. Older NMS
applications can safely ignore this status bit, which might be
used by newer agents.
2) The packetMatch trap has been removed. This trap was never
actually 'approved' and was not added to this document along
with the risingAlarm and fallingAlarm traps. The packetMatch
trap could not be throttled, which could cause disruption of
normal network traffic under some circumstances. An NMS should
configure a risingAlarm threshold on the appropriate
channelMatches instance if a trap is desired for a packetMatch
event. Note that logging of packetMatch events is still
supported--only trap generation for such events has been
removed.
In addition, several clarifications to individual object
definitions have been added to assist agent and NMS
implementors:
- global definition of 'good packets' and 'bad packets'
- more detailed text governing conceptual row creation and
modification
- instructions for probes relating to interface changes and
disruptions
- clarification of some ethernet counter definitions
- recommended formula for calculating network utilization
- clarification of channel and captureBuffer behavior for some
unusual conditions
- examples of proper instance naming for each table"
REVISION "199111010000Z" -- 1 Nov, 1991
DESCRIPTION
"The original version of this MIB, published as RFC1271."
::= { rmonConformance 8 }
rmon OBJECT IDENTIFIER ::= { mib-2 16 }
-- textual conventions
OwnerString ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This data type is used to model an administratively
assigned name of the owner of a resource. Implementations
must accept values composed of well-formed NVT ASCII
sequences. In addition, implementations should accept
values composed of well-formed UTF-8 sequences.
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."
SYNTAX OCTET STRING (SIZE (0..127))
EntryStatus ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"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 with default values
to complete a conceptual row in this table. Because the
creation of these default objects is entirely at the option
of the agent, the manager must not assume that any will be
created, but may make use of any that are created.
Immediately after completing the create operation, the agent
must set this object to underCreation(3).
When in the underCreation(3) state, an entry is allowed to
exist in a possibly incomplete, possibly inconsistent state,
usually to allow it to be modified in multiple PDUs. When in
this state, an entry is not fully active.
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.
An entry in the valid(1) state is fully configured and
consistent and fully represents the configuration or
operation such a row is intended to represent. For
example, it could be a statistical function that is
configured and active, or a filter that is available
in the list of filters processed by the packet capture
process.
A manager is restricted to changing the state of an entry in
the following ways:
To: valid createRequest underCreation invalid
From:
valid OK NO OK OK
createRequest N/A N/A N/A N/A
underCreation OK NO OK OK
invalid NO NO NO OK
nonExistent NO OK NO OK
In the table above, it is not applicable to move the state
from the createRequest state to any other state because the
manager will never find the variable in that state. The
nonExistent state is not a value of the enumeration, rather
it means that the entryStatus variable does not exist at all.
An agent may allow an entryStatus variable to change state in
additional ways, so long as the semantics of the states are
followed. This allowance is made to ease the implementation of
the agent and is made despite the fact that managers should
never exercise these additional state transitions."
SYNTAX INTEGER {
valid(1),
createRequest(2),
underCreation(3),
invalid(4)
}
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 }
rmonConformance OBJECT IDENTIFIER ::= { rmon 20 }
-- The Ethernet Statistics Group
--
-- Implementation of the Ethernet Statistics group is optional.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- The ethernet 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
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of Ethernet statistics entries."
::= { statistics 1 }
etherStatsEntry OBJECT-TYPE
SYNTAX EtherStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A collection of statistics kept for a particular
Ethernet interface. As an example, an instance of the
etherStatsPkts object might be named etherStatsPkts.1"
INDEX { etherStatsIndex }
::= { etherStatsTable 1 }
EtherStatsEntry ::= SEQUENCE {
etherStatsIndex Integer32,
etherStatsDataSource OBJECT IDENTIFIER,
etherStatsDropEvents Counter32,
etherStatsOctets Counter32,
etherStatsPkts Counter32,
etherStatsBroadcastPkts Counter32,
etherStatsMulticastPkts Counter32,
etherStatsCRCAlignErrors Counter32,
etherStatsUndersizePkts Counter32,
etherStatsOversizePkts Counter32,
etherStatsFragments Counter32,
etherStatsJabbers Counter32,
etherStatsCollisions Counter32,
etherStatsPkts64Octets Counter32,
etherStatsPkts65to127Octets Counter32,
etherStatsPkts128to255Octets Counter32,
etherStatsPkts256to511Octets Counter32,
etherStatsPkts512to1023Octets Counter32,
etherStatsPkts1024to1518Octets Counter32,
etherStatsOwner OwnerString,
etherStatsStatus EntryStatus
}
etherStatsIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object uniquely identifies this
etherStats entry."
::= { etherStatsEntry 1 }
etherStatsDataSource OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
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 RFC 2233 [17], 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.
An agent may or may not be able to tell if fundamental
changes to the media of the interface have occurred and
necessitate an invalidation of this entry. For example, a
hot-pluggable ethernet card could be pulled out and replaced
by a token-ring card. In such a case, if the agent has such
knowledge of the change, it is recommended that it
invalidate this entry.
This object may not be modified if the associated
etherStatsStatus object is equal to valid(1)."
::= { etherStatsEntry 2 }
etherStatsDropEvents OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets of data (including
those in bad packets) received on the
network (excluding framing bits but including
FCS octets).
This object can be used as a reasonable estimate of
10-Megabit ethernet utilization. If greater precision is
desired, the etherStatsPkts and etherStatsOctets objects
should be sampled before and after a common interval. The
differences in the sampled values are Pkts and Octets,
respectively, and the number of seconds in the interval is
Interval. These values are used to calculate the Utilization
as follows:
Pkts * (9.6 + 6.4) + (Octets * .8)
Utilization = -------------------------------------
Interval * 10,000
The result of this equation is the value Utilization which
is the percent utilization of the ethernet segment on a
scale of 0 to 100 percent."
::= { etherStatsEntry 4 }
etherStatsPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad packets,
broadcast packets, and multicast packets) received."
::= { etherStatsEntry 5 }
etherStatsBroadcastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of good packets received that were
directed to the broadcast address. Note that this
does not include multicast packets."
::= { etherStatsEntry 6 }
etherStatsMulticastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 had either a bad
Frame Check Sequence (FCS) with an integral
number of octets (FCS Error) or a bad FCS with
a non-integral number of octets (Alignment Error)."
::= { etherStatsEntry 8 }
etherStatsUndersizePkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets received that were less than
64 octets in length (excluding framing bits but including
FCS octets) and had either a bad Frame Check Sequence
(FCS) with an integral number of octets (FCS Error) or a
bad FCS with a non-integral number of octets (Alignment
Error).
Note that it is entirely normal for etherStatsFragments to
increment. This is because it counts both runts (which are
normal occurrences due to collisions) and noise hits."
::= { etherStatsEntry 11 }
etherStatsJabbers OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets received that were
longer than 1518 octets (excluding framing bits,
but including FCS octets), and had either a bad
Frame Check Sequence (FCS) with an integral number
of octets (FCS Error) or a bad FCS with a non-integral
number of octets (Alignment Error).
Note that this definition of jabber is different
than the definition in IEEE-802.3 section 8.2.1.5
(10BASE5) and section 10.3.1.4 (10BASE2). These
documents define jabber as the condition where any
packet exceeds 20 ms. The allowed range to detect
jabber is between 20 ms and 150 ms."
::= { etherStatsEntry 12 }
etherStatsCollisions OBJECT-TYPE
SYNTAX Counter32
UNITS "Collisions"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The best estimate of the total number of collisions
on this Ethernet segment.
The value returned will depend on the location of the
RMON probe. Section 8.2.1.3 (10BASE-5) and section
10.3.1.3 (10BASE-2) of IEEE standard 802.3 states that a
station must detect a collision, in the receive mode, if
three or more stations are transmitting simultaneously. A
repeater port must detect a collision when two or more
stations are transmitting simultaneously. Thus a probe
placed on a repeater port could record more collisions
than a probe connected to a station on the same segment
would.
Probe location plays a much smaller role when considering
10BASE-T. 14.2.1.4 (10BASE-T) of IEEE standard 802.3
defines a collision as the simultaneous presence of signals
on the DO and RD circuits (transmitting and receiving
at the same time). A 10BASE-T station can only detect
collisions when it is transmitting. Thus probes placed on
a station and a repeater, should report the same number of
collisions.
Note also that an RMON probe inside a repeater should
ideally report collisions between the repeater and one or
more other hosts (transmit collisions as defined by IEEE
802.3k) plus receiver collisions observed on any coax
segments to which the repeater is connected."
::= { etherStatsEntry 13 }
etherStatsPkts64Octets OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad
packets) received that were 64 octets in length
(excluding framing bits but including FCS octets)."
::= { etherStatsEntry 14 }
etherStatsPkts65to127Octets OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets (including bad
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
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entity that configured this entry and is therefore
using the resources assigned to it."
::= { etherStatsEntry 20 }
etherStatsStatus OBJECT-TYPE
SYNTAX EntryStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this etherStats entry."
::= { etherStatsEntry 21 }
-- The History Control Group
-- Implementation of the History Control group is optional.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- The history control group controls the periodic statistical
-- sampling of data from various types of networks. The
-- historyControlTable 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. Each counter in the
-- etherHistoryEntry counts the same event as its similarly-named
-- counterpart in the etherStatsEntry, except that each value here
-- is a cumulative sum during a sampling period.
--
-- 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 probe 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
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of history control entries."
::= { history 1 }
historyControlEntry OBJECT-TYPE
SYNTAX HistoryControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of parameters that set up a periodic sampling of
statistics. As an example, an instance of the
historyControlInterval object might be named
historyControlInterval.2"
INDEX { historyControlIndex }
::= { historyControlTable 1 }
HistoryControlEntry ::= SEQUENCE {
historyControlIndex Integer32,
historyControlDataSource OBJECT IDENTIFIER,
historyControlBucketsRequested Integer32,
historyControlBucketsGranted Integer32,
historyControlInterval Integer32,
historyControlOwner OwnerString,
historyControlStatus EntryStatus
}
historyControlIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
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
MAX-ACCESS read-create
STATUS current
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 RFC 2233 [17], 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.
An agent may or may not be able to tell if fundamental
changes to the media of the interface have occurred and
necessitate an invalidation of this entry. For example, a
hot-pluggable ethernet card could be pulled out and replaced
by a token-ring card. In such a case, if the agent has such
knowledge of the change, it is recommended that it
invalidate this entry.
This object may not be modified if the associated
historyControlStatus object is equal to valid(1)."
::= { historyControlEntry 2 }
historyControlBucketsRequested OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-create
STATUS current
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
historyControlEntry.
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 Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of discrete sampling intervals
over which data shall be saved in the part of
the media-specific table associated with this
historyControlEntry.
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 Integer32 (1..3600)
UNITS "Seconds"
MAX-ACCESS read-create
STATUS current
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
historyControlEntry. 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
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entity that configured this entry and is therefore
using the resources assigned to it."
::= { historyControlEntry 6 }
historyControlStatus OBJECT-TYPE
SYNTAX EntryStatus
MAX-ACCESS read-create
STATUS current
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 }
-- The Ethernet History Group
-- Implementation of the Ethernet History group is optional.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- The Ethernet History group records periodic statistical samples
-- from a network and stores them for later retrieval.
-- 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. This group defines the
-- etherHistoryTable, for Ethernet networks.
--
etherHistoryTable OBJECT-TYPE
SYNTAX SEQUENCE OF EtherHistoryEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of Ethernet history entries."
::= { history 2 }
etherHistoryEntry OBJECT-TYPE
SYNTAX EtherHistoryEntry
MAX-ACCESS not-accessible
STATUS current
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. As an example, an
instance of the etherHistoryPkts object might be named
etherHistoryPkts.2.89"
INDEX { etherHistoryIndex , etherHistorySampleIndex }
::= { etherHistoryTable 1 }
EtherHistoryEntry ::= SEQUENCE {
etherHistoryIndex Integer32,
etherHistorySampleIndex Integer32,
etherHistoryIntervalStart TimeTicks,
etherHistoryDropEvents Counter32,
etherHistoryOctets Counter32,
etherHistoryPkts Counter32,
etherHistoryBroadcastPkts Counter32,
etherHistoryMulticastPkts Counter32,
etherHistoryCRCAlignErrors Counter32,
etherHistoryUndersizePkts Counter32,
etherHistoryOversizePkts Counter32,
etherHistoryFragments Counter32,
etherHistoryJabbers Counter32,
etherHistoryCollisions Counter32,
etherHistoryUtilization Integer32
}
etherHistoryIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
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 Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
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
MAX-ACCESS read-only
STATUS current
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 Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of events in which packets
were dropped by the probe due to lack of resources
during this sampling 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 Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets (including bad packets)
received during this sampling interval."
::= { etherHistoryEntry 6 }
etherHistoryBroadcastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of good packets received during this
sampling interval that were directed to the
broadcast address."
::= { etherHistoryEntry 7 }
etherHistoryMulticastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 had either a bad Frame
Check Sequence (FCS) with an integral number of octets
(FCS Error) or a bad FCS with a non-integral number
of octets (Alignment Error)."
::= { etherHistoryEntry 9 }
etherHistoryUndersizePkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets received during this
sampling 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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets received during this
sampling 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 Counter32
UNITS "Packets"