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
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