|
Network Working Group Request for Comments: 2819 STD: 59 Obsoletes: 1757 Category: Standards Track |
S. Waldbusser Lucent Technologies May 2000 |
This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.
Copyright © The Internet Society (2000). All Rights Reserved.
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in TCP/IP-based internets. In particular, it defines objects for managing remote network monitoring devices.
This memo obsoletes RFC 1757. This memo extends that specification by documenting the RMON MIB in SMIv2 format while remaining semantically identical to the existing SMIv1-based MIB.
1 The SNMP Management Framework
2 Overview
2.1 Remote Network Management Goals
2.2 Textual Conventions
2.3 Structure of MIB
2.3.1 The Ethernet Statistics Group
2.3.2 The History Control Group
2.3.3 The Ethernet History Group
2.3.4 The Alarm Group
2.3.5 The Host Group
2.3.6 The HostTopN Group
2.3.7 The Matrix Group
2.3.8 The Filter Group
2.3.9 The Packet Capture Group
2.3.10 The Event Group
3 Control of Remote Network Monitoring Devices
3.1 Resource Sharing Among Multiple Management Stations ... 9
3.2 Row Addition Among Multiple Management Stations
4 Conventions
5 Definitions
6 Security Considerations
7 Acknowledgments
8 Author's Address
9 References
10 Intellectual Property
11 Full Copyright Statement
The SNMP Management Framework presently consists of five major components:
1906 [10]. The third version of the message protocol is called SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and RFC 2574 [12].
A more detailed introduction to the current SNMP Management Framework can be found in RFC 2570 [22].
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the mechanisms defined in the SMI.
This memo specifies a MIB module that is compliant to the SMIv2. A MIB conforming to the SMIv1 can be produced through the appropriate translations. The resulting translated MIB must be semantically equivalent, except where objects or events are omitted because no translation is possible (use of Counter64). Some machine readable information in SMIv2 will be converted into textual descriptions in SMIv1 during the translation process. However, this loss of machine readable information is not considered to change the semantics of the MIB.
Remote network monitoring devices, often called monitors or probes, are instruments that exist for the purpose of managing a network. Often these remote probes are stand-alone devices and devote significant internal resources for the sole purpose of managing a network. An organization may employ many of these devices, one per network segment, to manage its internet. In addition, these devices may be used for a network management service provider to access a client network, often geographically remote.
The objects defined in this document are intended as an interface between an RMON agent and an RMON management application and are not intended for direct manipulation by humans. While some users may tolerate the direct display of some of these objects, few will
tolerate the complexity of manually manipulating objects to accomplish row creation. These functions should be handled by the management application.
While most of the objects in this document are suitable for the management of any type of network, there are some which are specific to managing Ethernet networks. These are the objects in the etherStatsTable, the etherHistoryTable, and some attributes of the filterPktStatus and capturBufferPacketStatus objects. The design of this MIB allows similar objects to be defined for other network types. It is intended that future versions of this document and additional documents will define extensions for other network types.
There are a number of companion documents to the RMON MIB. The Token Ring RMON MIB [19] provides objects specific to managing Token Ring networks. The RMON-2 MIB [20] extends RMON by providing RMON analysis up to the application layer. The SMON MIB [21] extends RMON by providing RMON analysis for switched networks.
For this reason, this MIB allows a probe to be configured to perform diagnostics and to collect statistics continuously, even when communication with the management station may not be possible or efficient. The probe may then attempt to notify the management station when an exceptional condition occurs. Thus, even in circumstances where communication between management station and probe is not continuous, fault, performance, and configuration information may be continuously accumulated and communicated to the management station conveniently and efficiently.
about the failure. This historical information can be played back by the management station in an attempt to perform further diagnosis into the cause of the problem.
Two new data types are introduced as a textual convention in this MIB document, OwnerString and EntryStatus.
The objects are arranged into the following groups:
- ethernet statistics
- history control
- ethernet history
- alarm
- host
- hostTopN
- matrix
- filter
- packet capture
- event
These groups are the basic unit of conformance. If a remote monitoring device implements a group, then it must implement all objects in that group. For example, a managed agent that implements the host group must implement the hostControlTable, the hostTable and the hostTimeTable. While this section provides an overview of grouping and conformance information for this MIB, the authoritative reference for such information is contained in the MODULE-COMPLIANCE and OBJECT-GROUP macros later in this MIB.
All groups in this MIB are optional. Implementations of this MIB must also implement the system group of MIB-II [16] and the IF-MIB [17]. MIB-II may also mandate the implementation of additional groups.
These groups are defined to provide a means of assigning object identifiers, and to provide a method for implementors of managed agents to know which objects they must implement.
The ethernet statistics group contains statistics measured by the probe for each monitored Ethernet interface on this device. This group consists of the etherStatsTable.
The history control group controls the periodic statistical sampling of data from various types of networks. This group consists of the historyControlTable.
The ethernet history group records periodic statistical samples from an ethernet network and stores them for later retrieval. This group consists of the etherHistoryTable.
The alarm group periodically takes statistical samples from variables in the probe and compares them to previously configured thresholds. If the monitored variable crosses a threshold, an event is generated.
A hysteresis mechanism is implemented to limit the generation of alarms. This group consists of the alarmTable and requires the implementation of the event group.
The host group contains statistics associated with each host
discovered on the network. This group discovers hosts on the network
by keeping a list of source and destination MAC Addresses seen in
good packets promiscuously received from the network. This group
consists of the hostControlTable, the hostTable, and the
hostTimeTable.
The hostTopN group is used to prepare reports that describe the hosts that top a list ordered by one of their statistics. The available statistics are samples of one of their base statistics over an interval specified by the management station. Thus, these statistics are rate based. The management station also selects how many such hosts are reported. This group consists of the hostTopNControlTable and the hostTopNTable, and requires the implementation of the host group.
The matrix group stores statistics for conversations between sets of
two addresses. As the device detects a new conversation, it creates
a new entry in its tables. This group consists of the
matrixControlTable, the matrixSDTable and the matrixDSTable.
The filter group allows packets to be matched by a filter equation. These matched packets form a data stream that may be captured or may generate events. This group consists of the filterTable and the channelTable.
The Packet Capture group allows packets to be captured after they
flow through a channel. This group consists of the
bufferControlTable and the captureBufferTable, and requires the
implementation of the filter group.
The event group controls the generation and notification of events from this device. This group consists of the eventTable and the logTable.
Due to the complex nature of the available functions in these devices, the functions often need user configuration. In many cases, the function requires parameters to be set up for a data collection operation. The operation can proceed only after these parameters are fully set up.
Many functional groups in this MIB have one or more tables in which to set up control parameters, and one or more data tables in which to place the results of the operation. The control tables are typically read-write in nature, while the data tables are typically read-only. Because the parameters in the control table often describe resulting data in the data table, many of the parameters can be modified only when the control entry is invalid. Thus, the method for modifying these parameters is to invalidate the control entry, causing its deletion and the deletion of any associated data entries, and then create a new control entry with the proper parameters. Deleting the control entry also gives a convenient method for reclaiming the resources used by the associated data.
Some objects in this MIB provide a mechanism to execute an action on the remote monitoring device. These objects may execute an action as a result of a change in the state of the object. For those objects in this MIB, a request to set an object to the same value as it currently holds would thus cause no action to occur.
To facilitate control by multiple managers, resources have to be shared among the managers. These resources are typically the memory and computation resources that a function requires.
When multiple management stations wish to use functions that compete for a finite amount of resources on a device, a method to facilitate this sharing of resources is required. Potential conflicts include:
A mechanism is provided for each management station initiated function in this MIB to avoid these conflicts and to help resolve them when they occur. Each function has a label identifying the initiator (owner) of the function. This label is set by the initiator to provide for the following possibilities:
Management stations and probes should support any format of the owner string dictated by the local policy of the organization. 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. This information will help users to share the resources more effectively.
There is often default functionality that the device or the administrator of the probe (often the network administrator) wishes to set up. The resources associated with this functionality are then owned by the device itself or by the network administrator, and are intended to be long-lived. In this case, the device or the administrator will set the relevant owner object to a string starting with 'monitor'. Indiscriminate modification of the monitor-owned configuration by network management stations is discouraged. In fact, a network management station should only modify these objects under the direction of the administrator of the probe.
Resources on a probe are scarce and are typically allocated when control rows are created by an application. Since many applications may be using a probe simultaneously, indiscriminate allocation of resources to particular applications is very likely to cause resource shortages in the probe.
When a network management station wishes to utilize a function in a monitor, it is encouraged to first scan the control table of that function to find an instance with similar parameters to share. This is especially true for those instances owned by the monitor, which can be assumed to change infrequently. If a management station decides to share an instance owned by another management station, it should understand that the management station that owns the instance may indiscriminately modify or delete it.
It should be noted that a management application should have the most trust in a monitor-owned row because it should be changed very infrequently. A row owned by the management application is less long-lived because a network administrator is more likely to re- assign resources from a row that is in use by one user than from a monitor-owned row that is potentially in use by many users. A row owned by another application would be even less long-lived because the other application may delete or modify that row completely at its discretion.
The addition of new rows is achieved using the method described in RFC 1905 [13]. In this MIB, rows are often added to a table in order to configure a function. This configuration usually involves parameters that control the operation of the function. The agent must check these parameters to make sure they are appropriate given restrictions defined in this MIB as well as any implementation specific restrictions such as lack of resources. The agent implementor may be confused as to when to check these parameters and when to signal to the management station that the parameters are invalid. There are two opportunities:
If the latter is chosen, it would be unclear to the management station which of the several parameters was invalid and caused the badValue error to be emitted. Thus, wherever possible, the implementor should choose the former as it will provide more information to the management station.
A problem can arise when multiple management stations attempt to set configuration information simultaneously using SNMP. When this involves the addition of a new conceptual row in the same control table, the managers may collide, attempting to create the same entry. To guard against these collisions, each such control entry contains a status object with special semantics that help to arbitrate among the managers. If an attempt is made with the row addition mechanism to create such a status object and that object already exists, an error is returned. When more than one manager simultaneously attempts to create the same conceptual row, only the first can succeed. The others will receive an error.
When a manager wishes to create a new control entry, it needs to choose an index for that row. It may choose this index in a variety of ways, hopefully minimizing the chances that the index is in use by another manager. If the index is in use, the mechanism mentioned previously will guard against collisions. Examples of schemes to choose index values include random selection or scanning the control table looking for the first unused index. Because index values may be any valid value in the range and they are chosen by the manager, the agent must allow a row to be created with any unused index value if it has the resources to create a new row.
Some tables in this MIB reference other tables within this MIB. When creating or deleting entries in these tables, it is generally allowable for dangling references to exist. There is no defined order for creating or deleting entries in these tables.
The following conventions are used throughout the RMON MIB and its companion documents.
Good Packets
Good packets are error-free packets that have a valid frame length. For example, on Ethernet, good packets are error-free packets that are between 64 octets long and 1518 octets long. They follow the form defined in IEEE 802.3 section 3.2.all.
Bad Packets
Bad packets are packets that have proper framing and are therefore recognized as packets, but contain errors within the packet or have an invalid length. For example, on Ethernet, bad packets have a valid preamble and SFD, but have a bad CRC, or are either shorter than 64 octets or longer than 1518 octets.
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: waldbusser@nextbeacon.com"
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
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"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets received during this
sampling interval that were less than 64 octets in
length (excluding framing bits but including FCS
octets) 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 etherHistoryFragments to increment. This is because it counts both runts (which are normal occurrences due to collisions) and noise hits."
::= { etherHistoryEntry 12 }
etherHistoryJabbers 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),
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."
::= { etherHistoryEntry 13 }
etherHistoryCollisions 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 during this sampling
interval.
The value returned will depend on the location of the
RMON probe. Section 8.2.1.3 (10BASE-5) and section
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."
::= { etherHistoryEntry 14 }
etherHistoryUtilization OBJECT-TYPE
SYNTAX Integer32 (0..10000)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The best estimate of the mean physical layer
network utilization on this interface during this
sampling 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.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- 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, Integer32,
-- Counter32, Counter64, Gauge32, 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
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of alarm entries."
::= { alarm 1 }
alarmEntry OBJECT-TYPE
SYNTAX AlarmEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of parameters that set up a periodic checking
for alarm conditions. For example, an instance of the
alarmValue object might be named alarmValue.8"
INDEX { alarmIndex }
::= { alarmTable 1 }
AlarmEntry ::= SEQUENCE {
alarmIndex Integer32,
alarmInterval Integer32,
alarmVariable OBJECT IDENTIFIER,
alarmSampleType INTEGER,
alarmValue Integer32,
alarmStartupAlarm INTEGER,
alarmRisingThreshold Integer32,
alarmFallingThreshold Integer32,
alarmRisingEventIndex Integer32,
alarmFallingEventIndex Integer32,
alarmOwner OwnerString,
alarmStatus EntryStatus
}
alarmIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in the
alarm table. Each such entry defines a
diagnostic sample at a particular interval
for an object on the device."
::= { alarmEntry 1 }
alarmInterval OBJECT-TYPE
SYNTAX Integer32
UNITS "Seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The interval in seconds over which the data is
sampled and compared with the rising and falling
thresholds. When setting this variable, care
should be taken in the case of deltaValue
sampling - the interval should be set short enough
that the sampled variable is very unlikely to
increase or decrease by more than 2^31 - 1 during
a single sampling interval.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 2 }
alarmVariable OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The object identifier of the particular variable to be
sampled. Only variables that resolve to an ASN.1 primitive
type of INTEGER (INTEGER, Integer32, Counter32, Counter64,
Gauge, or TimeTicks) may be sampled.
Because SNMP access control is articulated entirely
in terms of the contents of MIB views, no access
control mechanism exists that can restrict the value of
this object to identify only those objects that exist
in a particular MIB view. Because there is thus no
acceptable means of restricting the read access that
could be obtained through the alarm mechanism, the
probe must only grant write access to this object in
those views that have read access to all objects on the probe.
During a set operation, if the supplied variable name is not available in the selected MIB view, a badValue error must be returned. If at any time the variable name of an established alarmEntry is no longer available in the selected MIB view, the probe must change the status of this alarmEntry to invalid(4).
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 3 }
alarmSampleType OBJECT-TYPE
SYNTAX INTEGER {
absoluteValue(1),
deltaValue(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The method of sampling the selected variable and
calculating the value to be compared against the
thresholds. If the value of this object is
absoluteValue(1), the value of the selected variable
will be compared directly with the thresholds at the
end of the sampling interval. If the value of this
object is deltaValue(2), the value of the selected
variable at the last sample will be subtracted from
the current value, and the difference compared with
the thresholds.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 4 }
alarmValue OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of the statistic during the last sampling
period. For example, if the sample type is deltaValue,
this value will be the difference between the samples
at the beginning and end of the period. If the sample
type is absoluteValue, this value will be the sampled
value at the end of the period.
This is the value that is compared with the rising and falling thresholds.
The value during the current sampling period is not made available until the period is completed and will remain available until the next period completes."
::= { alarmEntry 5 }
alarmStartupAlarm OBJECT-TYPE
SYNTAX INTEGER {
risingAlarm(1),
fallingAlarm(2),
risingOrFallingAlarm(3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The alarm that may be sent when this entry is first
set to valid. If the first sample after this entry
becomes valid is greater than or equal to the
risingThreshold and alarmStartupAlarm is equal to
risingAlarm(1) or risingOrFallingAlarm(3), then a single
rising alarm will be generated. If the first sample
after this entry becomes valid is less than or equal
to the fallingThreshold and alarmStartupAlarm is equal
to fallingAlarm(2) or risingOrFallingAlarm(3), then a
single falling alarm will be generated.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 6 }
alarmRisingThreshold OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A threshold for the sampled statistic. When the current
sampled value is greater than or equal to this threshold,
and the value at the last sampling interval was less than
this threshold, a single event will be generated.
A single event will also be generated if the first
sample after this entry becomes valid is greater than or
equal to this threshold and the associated
alarmStartupAlarm is equal to risingAlarm(1) or
risingOrFallingAlarm(3).
After a rising event is generated, another such event
will not be generated until the sampled value
falls below this threshold and reaches the
alarmFallingThreshold.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 7 }
alarmFallingThreshold OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A threshold for the sampled statistic. When the current
sampled value is less than or equal to this threshold,
and the value at the last sampling interval was greater than
this threshold, a single event will be generated.
A single event will also be generated if the first
sample after this entry becomes valid is less than or
equal to this threshold and the associated
alarmStartupAlarm is equal to fallingAlarm(2) or
risingOrFallingAlarm(3).
After a falling event is generated, another such event
will not be generated until the sampled value
rises above this threshold and reaches the
alarmRisingThreshold.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 8 }
alarmRisingEventIndex OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The index of the eventEntry that is
used when a rising threshold is crossed. The
eventEntry identified by a particular value of
this index is the same as identified by the same value
of the eventIndex object. If there is no
corresponding entry in the eventTable, then
no association exists. In particular, if this value
is zero, no associated event will be generated, as
zero is not a valid event index.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 9 }
alarmFallingEventIndex OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The index of the eventEntry that is
used when a falling threshold is crossed. The
eventEntry identified by a particular value of
this index is the same as identified by the same value
of the eventIndex object. If there is no
corresponding entry in the eventTable, then
no association exists. In particular, if this value
is zero, no associated event will be generated, as
zero is not a valid event index.
This object may not be modified if the associated
alarmStatus object is equal to valid(1)."
::= { alarmEntry 10 }
alarmOwner 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."
::= { alarmEntry 11 }
alarmStatus OBJECT-TYPE
SYNTAX EntryStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this alarm entry."
::= { alarmEntry 12 }
-- The Host Group
-- Implementation of the Host group is optional.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- The host group discovers new hosts on the network by
-- keeping a list of source and destination MAC Addresses seen
-- in good packets. For each of these addresses, the host group
-- keeps a set of statistics. The hostControlTable controls -- which interfaces this function is performed on, and contains -- some information about the process. On behalf of each -- hostControlEntry, data is collected on an interface and placed -- in both the hostTable and the hostTimeTable. If the -- monitoring device finds itself short of resources, it may -- delete entries as needed. It is suggested that the device -- delete the least recently used entries first. -- The hostTable contains entries for each address discovered on -- a particular interface. Each entry contains statistical -- data about that host. This table is indexed by the -- MAC address of the host, through which a random access -- may be achieved. -- The hostTimeTable contains data in the same format as the -- hostTable, and must contain the same set of hosts, but is -- indexed using hostTimeCreationOrder rather than hostAddress. -- The hostTimeCreationOrder is an integer which reflects -- the relative order in which a particular entry was discovered -- and thus inserted into the table. As this order, and thus -- the index, is among those entries currently in the table, -- the index for a particular entry may change if an -- (earlier) entry is deleted. Thus the association between -- hostTimeCreationOrder and hostTimeEntry may be broken at -- any time. -- 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
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of host table control entries."
::= { hosts 1 }
hostControlEntry OBJECT-TYPE
SYNTAX HostControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of parameters that set up the discovery of hosts
on a particular interface and the collection of statistics
about these hosts. For example, an instance of the
hostControlTableSize object might be named
hostControlTableSize.1"
INDEX { hostControlIndex }
::= { hostControlTable 1 }
HostControlEntry ::= SEQUENCE {
hostControlIndex Integer32,
hostControlDataSource OBJECT IDENTIFIER,
hostControlTableSize Integer32,
hostControlLastDeleteTime TimeTicks,
hostControlOwner OwnerString,
hostControlStatus EntryStatus
}
hostControlIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
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
MAX-ACCESS read-create
STATUS current
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 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
hostControlStatus object is equal to valid(1)."
::= { hostControlEntry 2 }
hostControlTableSize OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of hostEntries in the hostTable and the
hostTimeTable associated with this hostControlEntry."
::= { hostControlEntry 3 }
hostControlLastDeleteTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
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
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entity that configured this entry and is therefore
using the resources assigned to it."
::= { hostControlEntry 5 }
hostControlStatus OBJECT-TYPE
SYNTAX EntryStatus
MAX-ACCESS read-create
STATUS current
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
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of host entries."
::= { hosts 2 }
hostEntry OBJECT-TYPE
SYNTAX HostEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A collection of statistics for a particular host that has
been discovered on an interface of this device. For example,
an instance of the hostOutBroadcastPkts object might be
named hostOutBroadcastPkts.1.6.8.0.32.27.3.176"
INDEX { hostIndex, hostAddress }
::= { hostTable 1 }
HostEntry ::= SEQUENCE {
hostAddress OCTET STRING,
hostCreationOrder Integer32,
hostIndex Integer32,
hostInPkts Counter32,
hostOutPkts Counter32,
hostInOctets Counter32,
hostOutOctets Counter32,
hostOutErrors Counter32,
hostOutBroadcastPkts Counter32,
hostOutMulticastPkts Counter32
}
hostAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The physical address of this host."
::= { hostEntry 1 }
hostCreationOrder OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
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 Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of good packets transmitted to this
address since it was added to the hostTable."
::= { hostEntry 4 }
hostOutPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets, including bad packets, transmitted
by this address since it was added to the hostTable."
::= { hostEntry 5 }
hostInOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
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 bad packets."
::= { hostEntry 6 }
hostOutOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
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 bad packets."
::= { hostEntry 7 }
hostOutErrors OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of bad packets transmitted by this address
since this host was added to the hostTable."
::= { hostEntry 8 }
hostOutBroadcastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
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 HostTimeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of time-ordered host table entries."
::= { hosts 3 }
hostTimeEntry OBJECT-TYPE
SYNTAX HostTimeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A collection of statistics for a particular host that has
been discovered on an interface of this device. This
collection includes the relative ordering of the creation
time of this object. For example, an instance of the
hostTimeOutBroadcastPkts object might be named
hostTimeOutBroadcastPkts.1.687"
INDEX { hostTimeIndex, hostTimeCreationOrder }
::= { hostTimeTable 1 }
HostTimeEntry ::= SEQUENCE {
hostTimeAddress OCTET STRING,
hostTimeCreationOrder Integer32,
hostTimeIndex Integer32,
hostTimeInPkts Counter32,
hostTimeOutPkts Counter32,
hostTimeInOctets Counter32,
hostTimeOutOctets Counter32,
hostTimeOutErrors Counter32,
hostTimeOutBroadcastPkts Counter32,
hostTimeOutMulticastPkts Counter32
}
hostTimeAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The physical address of this host."
::= { hostTimeEntry 1 }
hostTimeCreationOrder OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in
the hostTime table among those entries associated
with the same 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.
Thus the management station has the ability to
learn of new entries added to this table without
downloading the entire table.
It is important to note that the index 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 hostTimeTable. By observing
this variable, the management station may detect
the circumstances where a download of the table
may have missed entries, and where a previous
association between a value of hostTimeCreationOrder
and a hostTimeEntry may no longer hold."
::= { hostTimeEntry 2 }
hostTimeIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
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."
::= { hostTimeEntry 3 }
hostTimeInPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of good packets transmitted to this
address since it was added to the hostTimeTable."
::= { hostTimeEntry 4 }
hostTimeOutPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets, including bad packets, transmitted
by this address since it was added to the hostTimeTable."
::= { hostTimeEntry 5 }
hostTimeInOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets transmitted to this address since
it was added to the hostTimeTable (excluding framing
bits but including FCS octets), except for those
octets in bad packets."
::= { hostTimeEntry 6 }
hostTimeOutOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets transmitted by this address since
it was added to the hostTimeTable (excluding framing
bits but including FCS octets), including those
octets in bad packets."
::= { hostTimeEntry 7 }
hostTimeOutErrors OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of bad packets transmitted by this address
since this host was added to the hostTimeTable."
::= { hostTimeEntry 8 }
hostTimeOutBroadcastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of good packets transmitted by this
address that were directed to the broadcast address
since this host was added to the hostTimeTable."
::= { hostTimeEntry 9 }
hostTimeOutMulticastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of good packets transmitted by this
address that were directed to a multicast address
since this host was added to the hostTimeTable.
Note that this number does not include packets directed
to the broadcast address."
::= { hostTimeEntry 10 }
-- The Host Top "N" Group
-- Implementation of the Host Top N group is optional. The Host Top N
-- group requires the implementation of the host group.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- The Host Top N group is used to prepare reports that describe
-- the hosts that top a list ordered by one of their statistics.
-- The available statistics are samples of one of their
-- base statistics, over an interval specified by the management
-- station. Thus, these statistics are rate based. The management
-- station also selects how many such hosts are reported.
-- The hostTopNControlTable is used to initiate the generation of
-- such a report. The management station may select the parameters
-- of such a report, such as which interface, which statistic,
-- how many hosts, and the start and stop times of the sampling.
-- When the report is prepared, entries are created in the
-- hostTopNTable associated with the relevant hostTopNControlEntry.
-- These entries are static for each report after it has been
-- prepared.
hostTopNControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF HostTopNControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of top N host control entries."
::= { hostTopN 1 }
hostTopNControlEntry OBJECT-TYPE
SYNTAX HostTopNControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of parameters that control the creation of a report
of the top N hosts according to several metrics. For
example, an instance of the hostTopNDuration object might
be named hostTopNDuration.3"
INDEX { hostTopNControlIndex }
::= { hostTopNControlTable 1 }
HostTopNControlEntry ::= SEQUENCE {
hostTopNControlIndex Integer32,
hostTopNHostIndex Integer32,
hostTopNRateBase INTEGER,
hostTopNTimeRemaining Integer32,
hostTopNDuration Integer32,
hostTopNRequestedSize Integer32,
hostTopNGrantedSize Integer32,
hostTopNStartTime TimeTicks,
hostTopNOwner OwnerString,
hostTopNStatus EntryStatus
}
hostTopNControlIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry
in the hostTopNControl table. Each such
entry defines one top N report prepared for
one interface."
::= { hostTopNControlEntry 1 }
hostTopNHostIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The host table for which a top N report will be prepared
on behalf of this entry. The host table identified by a
particular value of this index is associated with the same
host table as identified by the same value of
hostIndex.
This object may not be modified if the associated
hostTopNStatus object is equal to valid(1)."
::= { hostTopNControlEntry 2 }
hostTopNRateBase OBJECT-TYPE
SYNTAX INTEGER {
hostTopNInPkts(1),
hostTopNOutPkts(2),
hostTopNInOctets(3),
hostTopNOutOctets(4),
hostTopNOutErrors(5),
hostTopNOutBroadcastPkts(6),
hostTopNOutMulticastPkts(7)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The variable for each host that the hostTopNRate
variable is based upon.
This object may not be modified if the associated
hostTopNStatus object is equal to valid(1)."
::= { hostTopNControlEntry 3 }
hostTopNTimeRemaining OBJECT-TYPE
SYNTAX Integer32
UNITS "Seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The number of seconds left in the report currently being
collected. When this object is modified by the management
station, a new collection is started, possibly aborting
a currently running report. The new value is used
as the requested duration of this report, which is
loaded into the associated hostTopNDuration object.
When this object is set to a non-zero value, any
associated hostTopNEntries shall be made
inaccessible by the monitor. While the value of this
object is non-zero, it decrements by one per second until
it reaches zero. During this time, all associated
hostTopNEntries shall remain inaccessible. At the time
that this object decrements to zero, the report is made
accessible in the hostTopNTable. Thus, the hostTopN
table needs to be created only at the end of the collection
interval."
DEFVAL { 0 }
::= { hostTopNControlEntry 4 }
hostTopNDuration OBJECT-TYPE
SYNTAX Integer32
UNITS "Seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of seconds that this report has collected
during the last sampling interval, or if this
report is currently being collected, the number
of seconds that this report is being collected
during this sampling interval.
When the associated hostTopNTimeRemaining object is set,
this object shall be set by the probe to the same value
and shall not be modified until the next time
the hostTopNTimeRemaining is set.
This value shall be zero if no reports have been
requested for this hostTopNControlEntry."
DEFVAL { 0 }
::= { hostTopNControlEntry 5 }
hostTopNRequestedSize OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum number of hosts requested for the top N
table.
When this object is created or modified, the probe
should set hostTopNGrantedSize as closely to this
object as is possible for the particular probe
implementation and available resources."
DEFVAL { 10 }
::= { hostTopNControlEntry 6 }
hostTopNGrantedSize OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of hosts in the top N table.
When the associated hostTopNRequestedSize object is
created or modified, the probe should set this
object as closely to the requested value as is possible
for the particular implementation and available
resources. The probe must not lower this value except
as a result of a set to the associated
hostTopNRequestedSize object.
Hosts with the highest value of hostTopNRate shall be placed in this table in decreasing order of this rate until there is no more room or until there are no more hosts."
::= { hostTopNControlEntry 7 }
hostTopNStartTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this top N report was
last started. In other words, this is the time that
the associated hostTopNTimeRemaining object was
modified to start the requested report."
::= { hostTopNControlEntry 8 }
hostTopNOwner 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."
::= { hostTopNControlEntry 9 }
hostTopNStatus OBJECT-TYPE
SYNTAX EntryStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this hostTopNControl entry.
If this object is not equal to valid(1), all associated hostTopNEntries shall be deleted by the agent."
::= { hostTopNControlEntry 10 }
hostTopNTable OBJECT-TYPE
SYNTAX SEQUENCE OF HostTopNEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of top N host entries."
::= { hostTopN 2 }
hostTopNEntry OBJECT-TYPE
SYNTAX HostTopNEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A set of statistics for a host that is part of a top N
report. For example, an instance of the hostTopNRate
object might be named hostTopNRate.3.10"
INDEX { hostTopNReport, hostTopNIndex }
::= { hostTopNTable 1 }
HostTopNEntry ::= SEQUENCE {
hostTopNReport Integer32,
hostTopNIndex Integer32,
hostTopNAddress OCTET STRING,
hostTopNRate Integer32
}
hostTopNReport OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object identifies the top N report of which
this entry is a part. The set of hosts
identified by a particular value of this
object is part of the same report as identified
by the same value of the hostTopNControlIndex object."
::= { hostTopNEntry 1 }
hostTopNIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in
the hostTopN table among those in the same report.
This index is between 1 and N, where N is the
number of entries in this table. Increasing values
of hostTopNIndex shall be assigned to entries with
decreasing values of hostTopNRate until index N
is assigned to the entry with the lowest value of
hostTopNRate or there are no more hostTopNEntries."
::= { hostTopNEntry 2 }
hostTopNAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The physical address of this host."
::= { hostTopNEntry 3 }
hostTopNRate OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The amount of change in the selected variable
during this sampling interval. The selected
variable is this host's instance of the object
selected by hostTopNRateBase."
::= { hostTopNEntry 4 }
-- The Matrix Group
-- Implementation of the Matrix group is optional.
-- Consult the MODULE-COMPLIANCE macro for the authoritative
-- conformance information for this MIB.
--
-- The Matrix group consists of the matrixControlTable, matrixSDTable
-- and the matrixDSTable. These tables store statistics for a
-- particular conversation between two addresses. As the device
-- detects a new conversation, including those to a non-unicast
-- address, it creates a new entry in both of the matrix tables.
-- It must only create new entries based on information
-- received in good packets. If the monitoring device finds
-- itself short of resources, it may delete entries as needed.
-- It is suggested that the device delete the least recently used
-- entries first.
matrixControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF MatrixControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of information entries for the
traffic matrix on each interface."
::= { matrix 1 }
matrixControlEntry OBJECT-TYPE
SYNTAX MatrixControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a traffic matrix on a particular
interface. For example, an instance of the
matrixControlLastDeleteTime object might be named
matrixControlLastDeleteTime.1"
INDEX { matrixControlIndex }
::= { matrixControlTable 1 }
MatrixControlEntry ::= SEQUENCE {
matrixControlIndex Integer32,
matrixControlDataSource OBJECT IDENTIFIER,
matrixControlTableSize Integer32,
matrixControlLastDeleteTime TimeTicks,
matrixControlOwner OwnerString,
matrixControlStatus EntryStatus
}
matrixControlIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in the
matrixControl table. Each such entry defines
a function that discovers conversations on a particular
interface and places statistics about them in the
matrixSDTable and the matrixDSTable on behalf of this
matrixControlEntry."
::= { matrixControlEntry 1 }
matrixControlDataSource OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object identifies the source of
the data from which this entry creates a traffic matrix.
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
matrixControlStatus object is equal to valid(1)."
::= { matrixControlEntry 2 }
matrixControlTableSize OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of matrixSDEntries in the matrixSDTable
for this interface. This must also be the value of
the number of entries in the matrixDSTable for this
interface."
::= { matrixControlEntry 3 }
matrixControlLastDeleteTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when the last entry
was deleted from the portion of the matrixSDTable
or matrixDSTable associated with this matrixControlEntry.
If no deletions have occurred, this value shall be
zero."
::= { matrixControlEntry 4 }
matrixControlOwner 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."
::= { matrixControlEntry 5 }
matrixControlStatus OBJECT-TYPE
SYNTAX EntryStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this matrixControl entry.
If this object is not equal to valid(1), all associated
entries in the matrixSDTable and the matrixDSTable
shall be deleted by the agent."
::= { matrixControlEntry 6 }
matrixSDTable OBJECT-TYPE
SYNTAX SEQUENCE OF MatrixSDEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of traffic matrix entries indexed by
source and destination MAC address."
::= { matrix 2 }
matrixSDEntry OBJECT-TYPE
SYNTAX MatrixSDEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A collection of statistics for communications between
two addresses on a particular interface. For example,
an instance of the matrixSDPkts object might be named
matrixSDPkts.1.6.8.0.32.27.3.176.6.8.0.32.10.8.113"
INDEX { matrixSDIndex,
matrixSDSourceAddress, matrixSDDestAddress }
::= { matrixSDTable 1 }
MatrixSDEntry ::= SEQUENCE {
matrixSDSourceAddress OCTET STRING,
matrixSDDestAddress OCTET STRING,
matrixSDIndex Integer32,
matrixSDPkts Counter32,
matrixSDOctets Counter32,
matrixSDErrors Counter32
}
matrixSDSourceAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The source physical address."
::= { matrixSDEntry 1 }
matrixSDDestAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The destination physical address."
::= { matrixSDEntry 2 }
matrixSDIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The set of collected matrix statistics of which
this entry is a part. The set of matrix statistics
identified by a particular value of this index
is associated with the same matrixControlEntry
as identified by the same value of matrixControlIndex."
::= { matrixSDEntry 3 }
matrixSDPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets transmitted from the source
address to the destination address (this number includes
bad packets)."
::= { matrixSDEntry 4 }
matrixSDOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "Octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets (excluding framing bits but
including FCS octets) contained in all packets
transmitted from the source address to the
destination address."
::= { matrixSDEntry 5 }
matrixSDErrors OBJECT-TYPE
SYNTAX Counter32
UNITS "Packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of bad packets transmitted from
the source address to the destination address."
::= { matrixSDEntry 6 }
-- Traffic matrix tables from destination to source
matrixDSTable OBJECT-TYPE
SYNTAX SEQUENCE OF MatrixDSEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of traffic matrix entries indexed by
destination and source MAC address."
::= { matrix 3 }
matrixDSEntry OBJECT-TYPE
SYNTAX MatrixDSEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A collection of statistics for communications between
two addresses on a particular interface. For example,
an instance of the matrixSDPkts object might be named
matrixSDPkts.1.6.8.0.32.10.8.113.6.8.0.32.27.3.176"
INDEX { matrixDSIndex,
matrixDSDestAddress, matrixDSSourceAddress }
::= { matrixDSTable 1 }
MatrixDSEntry ::= SEQUENCE {
matrixDSSourceAddress OCTET STRING,
matrixDSDestAddress OCTET STRING,
matrixDSIndex Integer32,
matrixDSPkts Counter32,
matrixDSOctets Counter32,
matrixDSErrors Counter32
}
matrixDSSourceAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The source physical address."
::= { matrixDSEntry 1 }
matrixDSDestAddress OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The destination physical address."
::= { matrixDSEntry 2 }
matrixDSIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The set of collected matrix statistics of which
this entry is a part. The set of matrix statistics
identified by a particular value of this index
is associated with the same matrixControlEntry
as identified by the same value of matrixControlIndex."
::= { matrixDSEntry 3 }
matrixDSPkts OBJECT-T