[Docs] [txt|pdf] [draft-ietf-rmon...] [Tracker] [Diff1] [Diff2]
DRAFT STANDARD
Network Working Group R. Waterman
Request for Comments: 2613 Allot Networks Inc.
Category: Standards Track B. Lahaye
Xylan Corp.
D. Romascanu
Lucent Technologies
S. Waldbusser
INS
June 1999
Remote Network Monitoring MIB Extensions for Switched Networks
Version 1.0
Status of this Memo
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 Notice
Copyright (C) The Internet Society (1999). All Rights Reserved.
Abstract
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 in switched networks environments.
Table of Contents
1 The Network Management Framework 2
2 Overview 3
2.1 Remote Network Management Goals 3
2.2 Switched Networks Monitoring 5
2.3 Mechanisms for Monitoring Switched Networks 5
2.3.1 DataSource Objects 6
2.3.2 Copy Port 7
2.3.3 VLAN Monitoring 7
2.4 Relationship to Other MIBs 8
2.4.1 The RMON and RMON 2 MIBs 8
2.4.2 The Interfaces Group MIB 8
2.4.3 The Entity MIB 8
2.4.4 The Bridge MIB 9
Waterman, et al. Standards Track [Page 1]
RFC 2613 SMON MIB June 1999
2.5 Relationship with IEEE 802.1 Standards 9
3 SMON/RMON Groups 9
3.1 SMON ProbeCapabilities 9
3.2 smonVlanStats 10
3.3 smonPrioStats 10
3.4 dataSourceCaps 10
3.5 portCopyConfig 11
4 Control of Remote Network Monitoring Devices 12
5 Definitions 13
6 References 39
7 Intellectual Property 41
8 Security Considerations 41
9 Authors' Addresses 44
A Full Copyright Statement 44
1. The Network Management Framework
The SNMP Management Framework presently consists of five major
components:
- An overall architecture, described in RFC 2571 [1].
- Mechanisms for describing and naming objects and events for the
purpose of management. The first version of this Structure of
Management Information (SMI) is called SMIv1 and described in STD
16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4]. The second
version, called SMIv2, is described in STD 58, RFC 2578 [5], RFC
2579 [6] and RFC 2580 [7].
- Message protocols for transferring management information. The
first version of the SNMP message protocol is called SNMPv1 and
described in STD 15, RFC 1157 [8]. A second version of the SNMP
message protocol, which is not an Internet standards track
protocol, is called SNMPv2c and described in RFC 1901 [9] and RFC
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].
- Protocol operations for accessing management information. The first
set of protocol operations and associated PDU formats is described
in STD 15, RFC 1157 [8]. A second set of protocol operations and
associated PDU formats is described in RFC 1905 [13].
- A set of fundamental applications described in RFC 2573 [14] and
the view-based access control mechanism described in RFC 2575 [15].
Waterman, et al. Standards Track [Page 2]
RFC 2613 SMON MIB June 1999
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
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.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED","MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [24].
2. Overview
This document continues the architecture created in the RMON MIB [17]
by providing RMON analysis for switched networks (SMON).
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.
2.1 Remote Network Management Goals
o Offline Operation
There are sometimes conditions when a management station will not
be in constant contact with its remote monitoring devices. This is
sometimes by design in an attempt to lower communications costs
Waterman, et al. Standards Track [Page 3]
RFC 2613 SMON MIB June 1999
(especially when communicating over a WAN or dialup link), or by
accident as network failures affect the communications between the
management station and the probe.
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.
o Proactive Monitoring
Given the resources available on the monitor, it is potentially
helpful for it continuously to run diagnostics and to log network
performance. The monitor is always available at the onset of any
failure. It can notify the management station of the failure and
can store historical statistical information 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.
o Problem Detection and Reporting
The monitor can be configured to recognize conditions, most notably
error conditions, and continuously to check for them. When one of
these conditions occurs, the event may be logged, and management
stations may be notified in a number of ways.
o Value Added Data
Because a remote monitoring device represents a network resource
dedicated exclusively to network management functions, and because
it is located directly on the monitored portion of the network, the
remote network monitoring device has the opportunity to add
significant value to the data it collects. For instance, by
highlighting those hosts on the network that generate the most
traffic or errors, the probe can give the management station
precisely the information it needs to solve a class of problems.
o Multiple Managers
An organization may have multiple management stations for different
units of the organization, for different functions (e.g.
engineering and operations), and in an attempt to provide disaster
Waterman, et al. Standards Track [Page 4]
RFC 2613 SMON MIB June 1999
recovery. Because environments with multiple management stations
are common, the remote network monitoring device has to deal with
more than one management station, potentially using its resources
concurrently.
2.2 Switched Networks Monitoring
This document addresses issues related to applying "Remote
Technology" to Switch Networks. Switches today differ from standard
shared media protocols:
1) Data is not, in general, broadcast. This MAY be caused by the
switch architecture or by the connection-oriented nature of the
data. This means, therefore, that monitoring non-broadcast
traffic needs to be considered.
2) Monitoring the multiple entry and exit points from a switching
device requires a vast amount of resources - memory and CPU, and
aggregation of the data in logical packets of information,
determined by the application needs.
3) Switching incorporates logical segmentation such as Virtual LANs
(VLANs).
4) Switching incorporates packet prioritization.
5) Data across the switch fabric can be in the form of cells. Like
RMON, SMON is only concerned with the monitoring of packets.
Differences such as these make monitoring difficult. The current
RMON and RMON 2 standards do not provide for things that are unique
to switches or switched environments.
In order to overcome the limitations of the existing standards, new
monitoring mechanisms have been implemented by vendors of switching
equipment. All these monitoring strategies are currently proprietary
in nature.
This document provides the framework to include different switching
strategies and allow for monitoring operations consistent with the
RMON framework. This MIB is limited to monitoring and control
operations aimed at providing monitoring data for RMON probes.
2.3 Mechanisms for Monitoring Switched Networks
The following mechanisms are used by SMON devices, for the purpose of
monitoring switched networks.
Waterman, et al. Standards Track [Page 5]
RFC 2613 SMON MIB June 1999
2.3.1 DataSource Objects
The RMON MIB standard [17] defines data source objects which point to
MIB-II interfaces, identified by instances of ifIndex objects.
The SMON MIB extends this concept and allows for other types of
objects to be defined as data sources for RMON and/or SMON data.
Three forms of dataSources are described:
ifIndex.<I>
Traditional RMON dataSources. Called 'port-based' for
ifType.<I> not equal to 'propVirtual(53)'. <I> is the ifIndex
value (see [22]).
smonVlanDataSource.<V>
A dataSource of this form refers to a 'Packet-based VLAN' and
is called a 'VLAN-based' dataSource. <V> is the VLAN ID as
defined by the IEEE 802.1Q standard [19]. The value is between
1 and 4094 inclusive, and it represents an 802.1Q VLAN-ID with
global scope within a given bridged domain, as defined by [19].
entPhysicalEntry.<N>
A dataSource of this form refers to a physical entity within
the agent and is called an 'entity-based' dataSource. <N> is
the value of the entPhysicalIndex in the entPhysicalTable (see
[18]).
In addition to these new dataSource types, SMON introduces a new
group called dataSourceCapsTable to aid an NMS in discovering
dataSource identity and attributes.
The extended data source mechanism supported by the SMON MIB allows
for the use of external collection points, similar to the one defined
and supported by the RMON and RMON 2 MIBs, as well as internal
collection points (e.g. propVirtual ifTable entry, entPhysicalEntry).
The latter reflects either data sources which MAY be the result of
aggregation (e.g. switch-wide) or internal channels of physical
entities, which have the capability of being monitored by an SMON
probe.
Waterman, et al. Standards Track [Page 6]
RFC 2613 SMON MIB June 1999
2.3.2 Copy Port
In order to make the switching devices support RMON statistics, many
vendors have implemented a port copy feature, allowing traffic to be
replicated from switch port to switch port. Several levels of
configuration are possible:
1) 1 source port to 1 destination port
2) N source ports to 1 destination port
3) N source ports to M destination ports
The SMON standard presents a standard MIB interface which allows for
the control of this function.
Note that this function can apply to devices that have no other SMON
or RMON functionality than copy port. The agent of such a device
would support only the portCopyCaps and the portCopyConfig MIB
groups, out of the whole SMON MIB. Switch vendors are encouraged to
implement this subset of the SMON MIB, as it would allow for standard
port copy configuration from the same NMS application that does RMON
or SMON.
Port copy may cause congestion problems on the SMON device. This
situation is more likely occur when copying from a port of higher
speed to a port of lower speed or copy from multiple port to a single
port.
Particular implementations MAY chose to build protection mechanisms
that would prevent creation of new port copy links when the capacity
of the destination port is exceeded. The MIB allows for
implementations to (if supported) instrument a destination drop count
on port copy to provide NMS applications a sense of the quality of
data presented at the destination port.
2.3.3 VLAN Monitoring
VLAN monitoring can be accomplished by using a VLAN-based dataSource
and/or by configuring smonVlanIdStats and/or smonPrioStats
collections. These functions allow VLAN-ID or user priority
distributions per dataSource. VLAN monitoring provides a high-level
view of total VLAN usages and relative non-unicast traffic usage as
well as a profile of VLAN priority as defined in the 3-bit
user_priority field.
NOTE: priority statistics reflect what was parsed from the packet,
not what priority, if any, was necessarily granted by the switch.
Waterman, et al. Standards Track [Page 7]
RFC 2613 SMON MIB June 1999
2.4 Relationship to Other MIBs
2.4.1 The RMON and RMON 2 MIBs
The Remote Monitoring MIB (RMON) [17] provides several management
functions that MAY be directly or indirectly applicable to switched
networks.
The port copy mechanisms defined by the SMON MIB allow for the
destination ports to become a data source for any RMON statistics.
However, an NMS application SHOULD check whether it is in the device
capability (portCopyCap) to filter errors from a source to a
destination port and whether this capability is enabled, in order to
provide a correct interpretation of the copied port traffic.
RMON host and matrix group statistics entries MAY be aggregated by
use of the extended dataSource capability defined in SMON. RMON 2
groups are similarly extended through the use of SMON's dataSource
definition.
RMON also defines a simple thresholding monitoring mechanism, event-
logging and event-notification for any MIB instance; SMON utilizes
the alarms and events groups from RMON without modification. These
groups SHOULD be implemented on SMON devices if a simple thresholding
mechanism is desired.
The RMON 2 usrHistory group (user-defined history collection) SHOULD
be implemented by an SMON device if a history collection mechanism is
desired for smonStats entries.
2.4.2 The Interfaces Group MIB
The SMON MIB utilizes the propVirtual(53) ifType defined in the
Interfaces Group MIB [22] to provide SMON and RMON with new
dataSources such as VLANs and internal monitoring points. NMS
applications SHOULD consult the SMON dataSource capabilities group
(dataSourceCap) for a description of these virtual interfaces.
2.4.3 The Entity MIB
The SMON MIB does not mandate Entity MIB [18] support, but allows for
physical entities, as defined by this MIB to be defined as SMON data
sources. For such cases, the support for the entPhysicalTable is
required.
Waterman, et al. Standards Track [Page 8]
RFC 2613 SMON MIB June 1999
2.4.4 The Bridge MIB
One of the important indicators for measuring the effectiveness of a
switching device is the ratio between the number of forwarded frames
and the number of dropped frames at the switch port.
It is out of the scope of this MIB to provide instrumentation
information relative to switching devices. However, such indication
may be part of other MIB modules.
For instance the Bridge MIB [23] provides such MIB objects, for the
802.1 bridges (dot1dTpPortInFrames, dot1dTpPortInDiscards) and
switches managed according to the 802.1 bridge model MAY provide this
information.
2.5 Relationship with IEEE 802.1 Standards
The SMON MIB provides simple statistics per VLAN and priority levels.
Those two categories of statistics are important to managers of
switched networks. Interoperability for those features is ensured by
the use of the IEEE 802.1 p/Q standards ([19], [20]) defined by the
IEEE 802.1 WG. Interoperability from the SMON MIB point of view is
ensured by referencing the IEEE definition of VLANs and priority
levels for the SMON statistics.
3. SMON Groups
3.1 SMON ProbeCapabilities
The SMON probeCapabilities BITS object covers the following four
capabilities.
- smonVlanStats(0)
The probe supports the smonVlanStats object group.
- smonPrioStats(1)
The probe supports the smonPrioStats object group.
- dataSource(2)
The probe supports the dataSourceCaps object group.
- portCopy(4)
The probe supports the portCopyConfig object group.
Waterman, et al. Standards Track [Page 9]
RFC 2613 SMON MIB June 1999
3.2 smonVlanStats
The smonVlanStats MIB group includes the control and statistics
objects related to 802.1Q VLANs. Specific statistics per 802.1Q
virtual LAN are supported. The group provides a high level view of
total VLAN usage, and relative non-unicast traffic usage.
It is an implementation-specific matter as to how the agent
determines the proper default-VLAN for untagged or priority-tagged
frames.
3.3 smonPrioStats
The smonPrioStatsTable provides a distribution based on the
user_priority field in the VLAN header.
Note that this table merely reports priority as encoded in VLAN
headers, not the priority (if any) given the frame for actual
switching purposes.
3.4 dataSourceCaps
The dataSourceCaps MIB group identifies all supported data sources on
an SMON device. An NMS MAY use this table to discover the RMON and
Copy Port attributes of each data source.
Upon restart of the agent, the dataSourceTable, ifTable and
entPhysicalTable are initialized for the available data sources. The
agent MAY modify these tables as data sources become known or are
removed (e.g. hot swap of interfaces, chassis cards or the discovery
of VLAN usage). It is understood that dataSources representing VLANs
may not always be instantiated immediately upon restart, but rather
as VLAN usage is detected by the agent. The agent SHOULD attempt to
create dataSource and interface entries for all dataSources as soon
as possible.
For each dataSourceCapsEntry representing a VLAN or entPhysicalEntry,
the agent MUST create an associated ifEntry with a ifType value of
associated dataSourceCapsIfIndex object.
The rationale of the above derives from the fact that according to
[16] and [17] an RMON dataSource MUST be associated with an ifEntry.
Specifically, the dataSourceCapsTable allows for an agent to map
Entity MIB physical entities (e.g., switch backplanes) and entire
VLANs to ifEntries with ifType "propVirtual(53)". This ifEntry values
will be used as the actual values in RMON control table dataSource
objects. This allows for physical entities and VLANs to be treated
as RMON data sources, and RMON functions to be applied to this type
Waterman, et al. Standards Track [Page 10]
RFC 2613 SMON MIB June 1999
of data sources.
3.5 portCopyConfig
The portCopyConfig MIB group includes the objects defined for the
control of the port copy functionality in a device.
The standard does not place a limit on the mode in which this copy
function may be used:
Mode 1 -- 1:1 Copy
Single dataSource copied to a single destination dataSource.
Agent MAY limit configuration based on ifTypes, ifSpeeds, half-
duplex/full-duplex, or agent resources. In this mode the single
instance of the portCopyDestDropEvents object refers to dropped
frames on the portCopyDest interface.
Mode 2 -- N:1 Copy
Multiple dataSources copied to a single destination dataSource.
Agent MAY limit configuration based on ifTypes, ifSpeeds, half-
duplex/full-duplex, portCopyDest over-subscription, or agent
resources. In this mode all N instances of the
portCopyDestDropEvents object SHOULD contain the same value, and
refer to dropped frames on the portCopyDest interface.
Mode 3 -- N:M Copy
Multiple dataSources copied to multiple destination dataSources.
Agent MAY limit configuration based on ifTypes, ifSpeeds, half-
duplex/full-duplex, portCopyDest over-subscription, or agent
resources. Since portCopyDestDropEvents is kept per destination
port, all instances of the portCopyDestDropEvents object
associated with (indexed by) a given portCopyDest SHOULD have the
same value (i.e. replicated or aliased for each instance
associated with a given portCopyDest).
The rows do not have an OwnerString, since multiple rows MAY be part
of the same portCopy operation. The agent is expected to activate or
deactivate entries one at a time, based on the rowStatus for the
given row. This can lead to unpredictable results in Modes 2 and 3
in applications utilizing the portCopy target traffic, if multiple
PDUs are used to fully configure the operation. It is RECOMMENDED
that an entire portCopy operation be configured in one SetRequest PDU
if possible.
Waterman, et al. Standards Track [Page 11]
RFC 2613 SMON MIB June 1999
The portCopyDest object MAY NOT reference an interface associated
with a packet-based VLAN (smonVlanDataSource.<V>), but this
dataSource type MAY be used as a portCopySource.
4. Control of Remote Network Monitoring Devices
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 not active. Thus, the method for modifying
these parameters is to de-activate the entry, perform the SNMP Set
operations to modify the entry, and then re-activate the entry.
Deleting the control entry causes the deletion of any associated data
entries, which 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.
The control mechanisms defined and used in this MIB are the same as
those defined in the RMON MIB [17], for control functionality and
interaction with multiple managers.
Waterman, et al. Standards Track [Page 12]
RFC 2613 SMON MIB June 1999
5. Definitions
SMON-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, Counter32,
Integer32, Counter64
FROM SNMPv2-SMI
RowStatus, TEXTUAL-CONVENTION
FROM SNMPv2-TC
rmon, OwnerString
FROM RMON-MIB
LastCreateTime, DataSource, rmonConformance, probeConfig
FROM RMON2-MIB
InterfaceIndex
FROM IF-MIB
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF;
switchRMON MODULE-IDENTITY
LAST-UPDATED "9812160000Z"
ORGANIZATION "IETF RMON MIB Working Group"
CONTACT-INFO
"IETF RMONMIB WG Mailing list: rmonmib@cisco.com
Rich Waterman
Allot Networks Inc.
Tel: +1-408-559-0253
Email: rich@allot.com
Bill Lahaye
Xylan Corp.
Tel: +1-800-995-2612
Email: lahaye@ctron.com
Dan Romascanu
Lucent Technologies
Tel: +972-3-645-8414
Email: dromasca@lucent.com
Steven Waldbusser
International Network Services (INS)
Tel: +1-650-318-1251
Email: waldbusser@ins.com"
DESCRIPTION
"The MIB module for managing remote monitoring device
implementations for Switched Networks"
Waterman, et al. Standards Track [Page 13]
RFC 2613 SMON MIB June 1999
-- revision history
REVISION "9812160000Z" -- 16 Dec 1998 midemight
DESCRIPTION "Initial Version, published as RFC 2613."
::= { rmon 22 }
smonMIBObjects OBJECT IDENTIFIER ::= { switchRMON 1 }
dataSourceCaps OBJECT IDENTIFIER ::= {smonMIBObjects 1}
smonStats OBJECT IDENTIFIER ::= {smonMIBObjects 2}
portCopyConfig OBJECT IDENTIFIER ::= {smonMIBObjects 3}
smonRegistrationPoints OBJECT IDENTIFIER ::= {smonMIBObjects 4}
-- Textual Conventions
--
SmonDataSource ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Identifies the source of the data that the associated function
is configured to analyze. This Textual Convention
extends the DataSource Textual Convention defined by RMON 2
to the following data source types:
- ifIndex.<I>
DataSources of this traditional form are called 'port-based',
but only if ifType.<I> is not equal to 'propVirtual(53)'.
- smonVlanDataSource.<V>
A dataSource of this form refers to a 'Packet-based VLAN'
and is called a 'VLAN-based' dataSource. <V> is the VLAN
ID as defined by the IEEE 802.1Q standard [19]. The
value is between 1 and 4094 inclusive, and it represents
an 802.1Q VLAN-ID with global scope within a given
bridged domain, as defined by [19].
- entPhysicalEntry.<N>
A dataSource of this form refers to a physical entity within
the agent (e.g. entPhysicalClass = backplane(4)) and is called
an 'entity-based' dataSource."
SYNTAX OBJECT IDENTIFIER
-- The smonCapabilities object describes SMON agent capabilities.
smonCapabilities OBJECT-TYPE
SYNTAX BITS {
smonVlanStats(0),
Waterman, et al. Standards Track [Page 14]
RFC 2613 SMON MIB June 1999
smonPrioStats(1),
dataSource(2),
smonUnusedBit(3),
portCopy(4)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of the SMON MIB groups supported
by this agent."
::= { probeConfig 15 }
-- dataSourceCaps MIB group - defines SMON data source and port
-- copy capabilities for devices supporting SMON.
-- A NMS application will check this MIB group and retrieve
-- information about the SMON capabilities of the device before
-- applying SMON control operations to the device.
-- dataSourceCapsTable: defines capabilities of RMON data sources
dataSourceCapsTable OBJECT-TYPE
SYNTAX SEQUENCE OF DataSourceCapsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table describes RMON data sources and port copy
capabilities. An NMS MAY use this table to discover the
identity and attributes of the data sources on a given agent
implementation. Similar to the probeCapabilities object,
actual row-creation operations will succeed or fail based on
the resources available and parameter values used in each
row-creation operation.
Upon restart of the RMON agent, the dataSourceTable, ifTable,
and perhaps entPhysicalTable are initialized for the available
dataSources.
For each dataSourceCapsEntry representing a VLAN or
entPhysicalEntry the agent MUST create an associated ifEntry
with a ifType value of 'propVirtual(53)'. This ifEntry will be
used as the actual value in RMON control table dataSource
objects. The assigned ifIndex value is copied into the
associated dataSourceCapsIfIndex object.
It is understood that dataSources representing VLANs may not
always be instantiated immediately upon restart, but rather as
Waterman, et al. Standards Track [Page 15]
RFC 2613 SMON MIB June 1999
VLAN usage is detected by the agent. The agent SHOULD attempt
to create dataSource and interface entries for all dataSources
as soon as possible."
::= { dataSourceCaps 1 }
dataSourceCapsEntry OBJECT-TYPE
SYNTAX DataSourceCapsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entries per data source containing descriptions of data
source and port copy capabilities. This table is populated by
the SMON agent with one entry for each supported data
source."
INDEX { IMPLIED dataSourceCapsObject }
::= { dataSourceCapsTable 1 }
DataSourceCapsEntry ::= SEQUENCE {
dataSourceCapsObject
SmonDataSource,
dataSourceRmonCaps
BITS,
dataSourceCopyCaps
BITS,
dataSourceCapsIfIndex
InterfaceIndex
}
dataSourceCapsObject OBJECT-TYPE
SYNTAX SmonDataSource
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Defines an object that can be a SMON data source or a
source or a destination for a port copy operation."
::= { dataSourceCapsEntry 1 }
dataSourceRmonCaps OBJECT-TYPE
SYNTAX BITS {
countErrFrames(0),
countAllGoodFrames(1),
countAnyRmonTables(2),
babyGiantsCountAsGood(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
Waterman, et al. Standards Track [Page 16]
RFC 2613 SMON MIB June 1999
" General attributes of the specified dataSource. Note that
these are static attributes, which SHOULD NOT be adjusted
because of current resources or configuration.
- countErrFrames(0)
The agent sets this bit for the dataSource if errored frames
received on this dataSource can actually be monitored by the
agent The agent clears this bit if any errored frames are
not visible to the RMON data collector.
- countAllGoodFrames(1)
The agent sets this bit for the dataSource if all good
frames received on this dataSource can actually be monitored
by the agent. The agent clears this bit if any good frames
are not visible for RMON collection, e.g., the dataSource is
a non-promiscuous interface or an internal switch interface
which may not receive frames which were switched in hardware
or dropped by the bridge forwarding function.
- countAnyRmonTables(2)
The agent sets this bit if this dataSource can actually be
used in any of the implemented RMON tables, resources
notwithstanding. The agent clears this bit if this
dataSourceCapsEntry is present simply to identify a
dataSource that may only be used as portCopySource and/or a
portCopyDest, but not the source of an actual RMON data
collection.
- babyGiantsCountAsGood(3)
The agent sets this bit if it can distinguish, for counting
purposes, between true giant frames and frames that exceed
Ethernet maximum frame size 1518 due to VLAN tagging ('baby
giants'). Specifically, this BIT means that frames up to
1522 octets are counted as good.
Agents not capable of detecting 'baby giants' will clear
this bit and will view all frames less than or equal to 1518
octets as 'good frames' and all frames larger than 1518
octets as 'bad frames' for the purpose of counting in the
smonVlanIdStats and smonPrioStats tables.
Agents capable of detecting 'baby giants' SHALL consider
them as 'good frames' for the purpose of counting in the
smonVlanIdStats and smonPrioStats tables."
::= { dataSourceCapsEntry 2 }
dataSourceCopyCaps OBJECT-TYPE
Waterman, et al. Standards Track [Page 17]
RFC 2613 SMON MIB June 1999
SYNTAX BITS {
copySourcePort(0),
copyDestPort(1),
copySrcTxTraffic(2),
copySrcRxTraffic(3),
countDestDropEvents(4),
copyErrFrames(5),
copyUnalteredFrames(6),
copyAllGoodFrames(7)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"PortCopy function capabilities of the specified dataSource.
Note that these are static capabilities, which SHOULD NOT be
adjusted because of current resources or configuration.
- copySourcePort(0)
The agent sets this bit if this dataSource is capable of
acting as a source of a portCopy operation. The agent clears
this bit otherwise.
- copyDestPort(1)
The agent sets this bit if this dataSource is capable of
acting as a destination of a portCopy operation. The agent
clears this bit otherwise.
- copySrcTxTraffic(2)
If the copySourcePort bit is set:
The agent sets this bit if this dataSource is capable of
copying frames transmitted out this portCopy source. The
agent clears this bit otherwise. This function is needed
to support full-duplex ports.
Else:
this bit SHOULD be cleared.
- copySrcRxTraffic(3)
If the copySourcePort bit is set:
The agent sets this bit if this dataSource is capable of
copying frames received on this portCopy source. The agent
clears this bit otherwise. This function is needed to
support full-duplex ports.
Else:
this bit SHOULD be cleared.
- countDestDropEvents(4)
If the copyDestPort bit is set:
The agent sets this bit if it is capable of incrementing
Waterman, et al. Standards Track [Page 18]
RFC 2613 SMON MIB June 1999
portCopyDestDropEvents, when this dataSource is the
target of a portCopy operation and a frame destined to
this dataSource is dropped (for RMON counting purposes).
Else:
this BIT SHOULD be cleared.
- copyErrFrames(5)
If the copySourcePort bit is set:
The agent sets this bit if it is capable of copying all
errored frames from this portCopy source-port, for
errored frames received on this dataSource.
Else:
this BIT SHOULD be cleared.
- copyUnalteredFrames(6)
If the copySourcePort bit is set:
The agent sets the copyUnalteredFrames bit If it is
capable of copying all frames from this portCopy
source-port without alteration in any way;
Else:
this bit SHOULD be cleared.
- copyAllGoodFrames(7)
If the copySourcePort bit is set:
The agent sets this bit for the dataSource if all good
frames received on this dataSource are normally capable
of being copied by the agent. The agent clears this bit
if any good frames are not visible for the RMON portCopy
operation, e.g., the dataSource is a non-promiscuous
interface or an internal switch interface which may not
receive frames which were switched in hardware or
dropped by the bridge forwarding function.
Else:
this bit SHOULD be cleared."
::= { dataSourceCapsEntry 3 }
dataSourceCapsIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains the ifIndex value of the ifEntry
associated with this smonDataSource. The agent MUST create
'propVirtual' ifEntries for each dataSourceCapsEntry of type
VLAN or entPhysicalEntry."
::= { dataSourceCapsEntry 4 }
Waterman, et al. Standards Track [Page 19]
RFC 2613 SMON MIB June 1999
-- The SMON Statistics MIB Group
-- aggregated statistics for IEEE 802.1Q VLAN environments.
-- VLAN statistics can be gathered by configuring smonVlanIdStats
-- and/or smonPrioStats collections. These functions allow a
-- VLAN-ID or user priority distributions per dataSource,
-- auto-populated by the agent in a manner similar to the RMON
-- hostTable.
-- Only good frames are counted in the tables described in this
-- section.
-- VLAN ID Stats
-- smonVlanStatsControlTable allows configuration of VLAN-ID
-- collections.
smonVlanStatsControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF SmonVlanStatsControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Controls the setup of VLAN statistics tables.
The statistics collected represent a distribution based on
the IEEE 802.1Q VLAN-ID (VID), for each good frame attributed
to the data source for the collection."
::= { smonStats 1 }
smonVlanStatsControlEntry OBJECT-TYPE
SYNTAX SmonVlanStatsControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A conceptual row in the smonVlanStatsControlTable."
INDEX { smonVlanStatsControlIndex }
::= { smonVlanStatsControlTable 1 }
SmonVlanStatsControlEntry ::= SEQUENCE {
smonVlanStatsControlIndex Integer32,
smonVlanStatsControlDataSource DataSource,
smonVlanStatsControlCreateTime LastCreateTime,
smonVlanStatsControlOwner OwnerString,
smonVlanStatsControlStatus RowStatus
}
Waterman, et al. Standards Track [Page 20]
RFC 2613 SMON MIB June 1999
smonVlanStatsControlIndex OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique arbitrary index for this smonVlanStatsControlEntry."
::= { smonVlanStatsControlEntry 1 }
smonVlanStatsControlDataSource OBJECT-TYPE
SYNTAX DataSource
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The source of data for this set of VLAN statistics.
This object MAY NOT be modified if the associated
smonVlanStatsControlStatus object is equal to active(1)."
::= { smonVlanStatsControlEntry 2 }
smonVlanStatsControlCreateTime OBJECT-TYPE
SYNTAX LastCreateTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this control entry was last
activated. This object allows to a management station to
detect deletion and recreation cycles between polls."
::= { smonVlanStatsControlEntry 3 }
smonVlanStatsControlOwner OBJECT-TYPE
SYNTAX OwnerString
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Administratively assigned named of the owner of this entry.
It usually defines the entity that created this entry and is
therefore using the resources assigned to it, though there is
no enforcement mechanism, nor assurance that rows created are
ever used."
::= { smonVlanStatsControlEntry 4 }
smonVlanStatsControlStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row.
Waterman, et al. Standards Track [Page 21]
RFC 2613 SMON MIB June 1999
An entry MAY NOT exist in the active state unless all
objects in the entry have an appropriate value.
If this object is not equal to active(1), all associated
entries in the smonVlanIdStatsTable SHALL be deleted."
::= { smonVlanStatsControlEntry 5 }
-- The VLAN Statistics Table
smonVlanIdStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF SmonVlanIdStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Contains the VLAN statistics data.
The statistics collected represent a distribution based
on the IEEE 802.1Q VLAN-ID (VID), for each good frame
attributed to the data source for the collection.
This function applies the same rules for attributing frames
to VLAN-based collections. RMON VLAN statistics are collected
after the Ingress Rules defined in section 3.13 of the VLAN
Specification [20] are applied.
It is possible that entries in this table will be
garbage-collected, based on agent resources, and VLAN
configuration. Agents are encouraged to support all 4094
index values and not garbage collect this table."
::= { smonStats 2 }
smonVlanIdStatsEntry OBJECT-TYPE
SYNTAX SmonVlanIdStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A conceptual row in smonVlanIdStatsTable."
INDEX { smonVlanStatsControlIndex, smonVlanIdStatsId }
::= { smonVlanIdStatsTable 1 }
SmonVlanIdStatsEntry ::= SEQUENCE {
smonVlanIdStatsId Integer32,
smonVlanIdStatsTotalPkts Counter32,
smonVlanIdStatsTotalOverflowPkts Counter32,
smonVlanIdStatsTotalHCPkts Counter64,
smonVlanIdStatsTotalOctets Counter32,
smonVlanIdStatsTotalOverflowOctets Counter32,
smonVlanIdStatsTotalHCOctets Counter64,
smonVlanIdStatsNUcastPkts Counter32,
Waterman, et al. Standards Track [Page 22]
RFC 2613 SMON MIB June 1999
smonVlanIdStatsNUcastOverflowPkts Counter32,
smonVlanIdStatsNUcastHCPkts Counter64,
smonVlanIdStatsNUcastOctets Counter32,
smonVlanIdStatsNUcastOverflowOctets Counter32,
smonVlanIdStatsNUcastHCOctets Counter64,
smonVlanIdStatsCreateTime LastCreateTime
}
smonVlanIdStatsId OBJECT-TYPE
SYNTAX Integer32 (1..4094)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The unique identifier of the VLAN monitored for
this specific statistics collection.
Tagged packets match the VID for the range between 1 and 4094.
An external RMON probe MAY detect VID=0 on an Inter Switch
Link, in which case the packet belongs to a VLAN determined by
the PVID of the ingress port. The VLAN to which such a packet
belongs can be determined only by a RMON probe internal to the
switch."
REFERENCE
"Draft Standard for Virtual Bridged Local Area Networks,
P802.1Q/D10, chapter 3.13"
::= { smonVlanIdStatsEntry 1 }
smonVlanIdStatsTotalPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets counted on this VLAN."
::= { smonVlanIdStatsEntry 2 }
smonVlanIdStatsTotalOverflowPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated smonVlanIdStatsTotalPkts
counter has overflowed."
::= { smonVlanIdStatsEntry 3 }
smonVlanIdStatsTotalHCPkts OBJECT-TYPE
SYNTAX Counter64
Waterman, et al. Standards Track [Page 23]
RFC 2613 SMON MIB June 1999
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets counted on this VLAN."
::= { smonVlanIdStatsEntry 4 }
smonVlanIdStatsTotalOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets counted on this VLAN."
::= { smonVlanIdStatsEntry 5 }
smonVlanIdStatsTotalOverflowOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated smonVlanIdStatsTotalOctets
counter has overflowed."
::= { smonVlanIdStatsEntry 6 }
smonVlanIdStatsTotalHCOctets OBJECT-TYPE
SYNTAX Counter64
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets counted on this VLAN."
::= { smonVlanIdStatsEntry 7 }
smonVlanIdStatsNUcastPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of non-unicast packets counted on this
VLAN."
::= { smonVlanIdStatsEntry 8 }
smonVlanIdStatsNUcastOverflowPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
Waterman, et al. Standards Track [Page 24]
RFC 2613 SMON MIB June 1999
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated smonVlanIdStatsNUcastPkts
counter has overflowed."
::= { smonVlanIdStatsEntry 9 }
smonVlanIdStatsNUcastHCPkts OBJECT-TYPE
SYNTAX Counter64
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of non-unicast packets counted on
this VLAN."
::= { smonVlanIdStatsEntry 10 }
smonVlanIdStatsNUcastOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of non-unicast octets counted on
this VLAN."
::= { smonVlanIdStatsEntry 11 }
smonVlanIdStatsNUcastOverflowOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated
smonVlanIdStatsNUcastOctets counter has overflowed."
::= { smonVlanIdStatsEntry 12 }
smonVlanIdStatsNUcastHCOctets OBJECT-TYPE
SYNTAX Counter64
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of Non-unicast octets counted on
this VLAN."
::= { smonVlanIdStatsEntry 13 }
smonVlanIdStatsCreateTime OBJECT-TYPE
Waterman, et al. Standards Track [Page 25]
RFC 2613 SMON MIB June 1999
SYNTAX LastCreateTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this entry was last
activated. This object allows to a management station to
detect deletion and recreation cycles between polls."
::= { smonVlanIdStatsEntry 14 }
-- smonPrioStatsControlTable
smonPrioStatsControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF SmonPrioStatsControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Controls the setup of priority statistics tables.
The smonPrioStatsControlTable allows configuration of
collections based on the value of the 3-bit user priority
field encoded in the Tag Control Information (TCI) field
according to [19],[20].
Note that this table merely reports priority as encoded in
the VLAN headers, not the priority (if any) given to the
frame for the actual switching purposes."
::= { smonStats 3 }
smonPrioStatsControlEntry OBJECT-TYPE
SYNTAX SmonPrioStatsControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A conceptual row in the smonPrioStatsControlTable."
INDEX { smonPrioStatsControlIndex }
::= { smonPrioStatsControlTable 1 }
SmonPrioStatsControlEntry ::= SEQUENCE {
smonPrioStatsControlIndex Integer32,
smonPrioStatsControlDataSource DataSource,
smonPrioStatsControlCreateTime LastCreateTime,
smonPrioStatsControlOwner OwnerString,
smonPrioStatsControlStatus RowStatus
}
smonPrioStatsControlIndex OBJECT-TYPE
Waterman, et al. Standards Track [Page 26]
RFC 2613 SMON MIB June 1999
SYNTAX Integer32 (1..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique arbitrary index for this smonPrioStatsControlEntry."
::= { smonPrioStatsControlEntry 1 }
smonPrioStatsControlDataSource OBJECT-TYPE
SYNTAX DataSource
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The source of data for this set of VLAN statistics.
This object MAY NOT be modified if the associated
smonPrioStatsControlStatus object is equal to active(1)."
::= { smonPrioStatsControlEntry 2 }
smonPrioStatsControlCreateTime OBJECT-TYPE
SYNTAX LastCreateTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when this entry was created.
This object allows to a management station to
detect deletion and recreation cycles between polls."
::= { smonPrioStatsControlEntry 3 }
smonPrioStatsControlOwner OBJECT-TYPE
SYNTAX OwnerString
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Administratively assigned named of the owner of this entry.
It usually defines the entity that created this entry and is
therefore using the resources assigned to it, though there is
no enforcement mechanism, nor assurance that rows created are
ever used."
::= { smonPrioStatsControlEntry 4 }
smonPrioStatsControlStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row.
Waterman, et al. Standards Track [Page 27]
RFC 2613 SMON MIB June 1999
An entry MAY NOT exist in the active state unless all
objects in the entry have an appropriate value.
If this object is not equal to active(1), all associated
entries in the smonPrioStatsTable SHALL be deleted."
::= { smonPrioStatsControlEntry 5 }
-- The Priority Statistics Table
smonPrioStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF SmonPrioStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Contains the priority statistics. The collections are based
on the value of the 3-bit user priority field encoded in the
Tag Control Information (TCI) field according to [19], [20].
Note that this table merely reports priority as encoded in
the VLAN headers, not the priority (if any) given to the
frame for the actual switching purposes.
No garbage collection is designed for this table, as there
always are at most eight rows per statistical set, and the
low memory requirements do not justify the implementation of
such a mechanism."
::= { smonStats 4 }
smonPrioStatsEntry OBJECT-TYPE
SYNTAX SmonPrioStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A conceptual row in smonPrioStatsTable."
INDEX { smonPrioStatsControlIndex, smonPrioStatsId }
::= { smonPrioStatsTable 1 }
SmonPrioStatsEntry ::= SEQUENCE {
smonPrioStatsId Integer32,
smonPrioStatsPkts Counter32,
smonPrioStatsOverflowPkts Counter32,
smonPrioStatsHCPkts Counter64,
smonPrioStatsOctets Counter32,
smonPrioStatsOverflowOctets Counter32,
smonPrioStatsHCOctets Counter64
}
smonPrioStatsId OBJECT-TYPE
SYNTAX Integer32 (0..7)
Waterman, et al. Standards Track [Page 28]
RFC 2613 SMON MIB June 1999
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The unique identifier of the priority level monitored for
this specific statistics collection."
REFERENCE
" Draft Standard for Virtual Bridged Local Area Networks,
P802.1Q/D10, chapter 4.3.2.1"
::= { smonPrioStatsEntry 1 }
smonPrioStatsPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets counted on
this priority level."
::= { smonPrioStatsEntry 2 }
smonPrioStatsOverflowPkts OBJECT-TYPE
SYNTAX Counter32
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated smonPrioStatsPkts
counter has overflowed."
::= { smonPrioStatsEntry 3 }
smonPrioStatsHCPkts OBJECT-TYPE
SYNTAX Counter64
UNITS "packets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of packets counted on
this priority level."
::= { smonPrioStatsEntry 4 }
smonPrioStatsOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets counted on
this priority level."
Waterman, et al. Standards Track [Page 29]
RFC 2613 SMON MIB June 1999
::= { smonPrioStatsEntry 5 }
smonPrioStatsOverflowOctets OBJECT-TYPE
SYNTAX Counter32
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times the associated smonPrioStatsOctets
counter has overflowed."
::= { smonPrioStatsEntry 6 }
smonPrioStatsHCOctets OBJECT-TYPE
SYNTAX Counter64
UNITS "octets"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets counted on
this priority level."
::= { smonPrioStatsEntry 7 }
portCopyTable OBJECT-TYPE
SYNTAX SEQUENCE OF PortCopyEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
" Port Copy provides the ability to copy all frames from a
specified source to specified destination within a switch.
Source and destinations MUST be ifEntries, as defined by [22].
One to one, one to many, many to one and many to many source to
destination relationships may be configured.
Applicable counters on the destination will increment for all
packets transiting the port, be it by normal bridging/switching
or due to packet copy.
Note that this table manages no RMON data collection by itself,
and an agent may possibly implement no RMON objects except
objects related to the port copy operation defined by the
portCopyCompliance conformance macro. That allows for a switch
with no other embedded RMON capability to perform port copy
operations to a destination port at which a different external
RMON probe is connected.
One to one, many to one and one to many source to destination
relationships may be configured.
Waterman, et al. Standards Track [Page 30]
RFC 2613 SMON MIB June 1999
Each row that exists in this table defines such a
relationship. By disabling a row in this table the port copy
relationship no longer exists.
The number of entries and the types of port copies (1-1,
many-1, 1-many) are implementation specific and could
possibly be dynamic due to changing resource availability.
In order to configure a source to destination portCopy
relationship, both source and destination interfaces MUST be
present as an ifEntry in the ifTable and their respective
ifAdminStatus and ifOperStatus values MUST be equal to
'up(1)'. If the value of any of those two objects changes
after the portCopyEntry is activated, portCopyStatus will
transition to 'notReady(3)'.
The capability of an interface to be source or destination of
a port copy operation is described by the 'copySourcePort(0)'
and 'copyDestPort(1)' bits in dataSourceCopyCaps. Those bits
SHOULD be appropriately set by the agent, in order to allow
for a portCopyEntry to be created.
Applicable counters on the destination will increment for all
packets transmitted, be it by normal bridging/switching or
due to packet copy."
::= { portCopyConfig 1 }
portCopyEntry OBJECT-TYPE
SYNTAX PortCopyEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a particular port copy entry."
INDEX { portCopySource, portCopyDest }
::= { portCopyTable 1 }
PortCopyEntry ::= SEQUENCE {
portCopySource
InterfaceIndex,
portCopyDest
InterfaceIndex,
portCopyDestDropEvents
Counter32,
portCopyDirection
INTEGER,
portCopyStatus
RowStatus
}
Waterman, et al. Standards Track [Page 31]
RFC 2613 SMON MIB June 1999
portCopySource OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The ifIndex of the source which will have all packets
redirected to the destination as defined by portCopyDest."
::= { portCopyEntry 1 }
portCopyDest OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Defines the ifIndex destination for the copy operation."
::= { portCopyEntry 2 }
portCopyDestDropEvents OBJECT-TYPE
SYNTAX Counter32
UNITS "events"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of events in which port copy packets were
dropped by the switch at the destination port 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.
A single dropped event counter is maintained for each
portCopyDest. Thus all instances associated with a given
portCopyDest will have the same portCopyDestDropEvents
value."
::= { portCopyEntry 3 }
portCopyDirection OBJECT-TYPE
SYNTAX INTEGER {
copyRxOnly(1),
copyTxOnly(2),
copyBoth(3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object affects the way traffic is copied from a switch
source port, for the indicated port copy operation.
Waterman, et al. Standards Track [Page 32]
RFC 2613 SMON MIB June 1999
If this object has the value 'copyRxOnly(1)', then only
traffic received on the indicated source port will be copied
to the indicated destination port.
If this object has the value 'copyTxOnly(2)', then only
traffic transmitted out the indicated source port will be
copied to the indicated destination port.
If this object has the value 'copyBoth(3)', then all traffic
received or transmitted on the indicated source port will be
copied to the indicated destination port.
The creation and deletion of instances of this object is
controlled by the portCopyRowStatus object. Note that there
is no guarantee that changes in the value of this object
performed while the associated portCopyRowStatus object is
equal to active will not cause traffic discontinuities in the
packet stream."
DEFVAL { copyBoth }
::= { portCopyEntry 4 }
portCopyStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Defines the status of the port copy entry.
In order to configure a source to destination portCopy
relationship, both source and destination interfaces MUST be
present as an ifEntry in the ifTable and their respective
ifAdminStatus and ifOperStatus values MUST be equal to
'up(1)'. If the value of any of those two objects changes
after the portCopyEntry is activated, portCopyStatus will
transition to 'notReady(3)'.
The capability of an interface to be source or destination of
a port copy operation is described by the 'copySourcePort(0)'
and 'copyDestPort(1)' bits in dataSourceCopyCaps. Those bits
SHOULD be appropriately set by the agent, in order to allow
for a portCopyEntry to be created."
::= { portCopyEntry 5 }
-- smonRegistrationPoints
-- defines a set of OIDs for registration purposes of entities
-- supported by the SMON MIB.
smonVlanDataSource
Waterman, et al. Standards Track [Page 33]
RFC 2613 SMON MIB June 1999
OBJECT IDENTIFIER ::= { smonRegistrationPoints 1}
-- Defined for use as an SmonDataSource. A single integer parameter
-- is appended to the end of this OID when actually encountered in
-- the dataSourceCapsTable, which represents a positive, non-zero
-- VLAN identifier value.
-- Conformance Macros
smonMIBCompliances OBJECT IDENTIFIER ::= { rmonConformance 3}
smonMIBGroups OBJECT IDENTIFIER ::= { rmonConformance 4}
smonMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Describes the requirements for full conformance with the SMON
MIB"
MODULE -- this module
MANDATORY-GROUPS {dataSourceCapsGroup,
smonVlanStatsGroup,
smonPrioStatsGroup,
portCopyConfigGroup,
smonInformationGroup}
GROUP smonHcTo100mbGroup
DESCRIPTION
"This group of VLAN statistics counter are mandatory only for
those network interfaces for which the corresponding ifSpeed
can be greater than 10MB/sec and less than or equal to
100MB/sec."
GROUP smonHc100mbPlusGroup
DESCRIPTION
"This group of VLAN statistics counters are mandatory only for
those network interfaces for which the corresponding ifSpeed
can be more than 100MB/sec. This group of VLAN statistics is
also mandatory for smonDataSources of type VLAN or
entPhysicalEntry."
::= { smonMIBCompliances 1 }
smonMIBVlanStatsCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Describes the requirements for conformance with the SMON MIB
with support for VLAN Statistics. Mandatory for a SMON probe
in environment where IEEE 802.1Q bridging is implemented."
MODULE -- this module
Waterman, et al. Standards Track [Page 34]
RFC 2613 SMON MIB June 1999
MANDATORY-GROUPS {dataSourceCapsGroup,
smonVlanStatsGroup,
smonInformationGroup}
GROUP hcVlanTo100mbGroup
DESCRIPTION
"This group of VLAN statistics counter are mandatory only
for those network interfaces for which the corresponding
ifSpeed can be up to and including 100MB/sec."
GROUP hcVlan100mbPlusGroup
DESCRIPTION
"This group of VLAN statistics counters are mandatory only for
those network interfaces for which the corresponding ifSpeed
is greater than 100MB/sec. This group of VLAN statistics is
also mandatory for smonDataSources of type VLAN or
entPhysicalEntry."
::= { smonMIBCompliances 2 }
smonMIBPrioStatsCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Describes the requirements for conformance with the SMON MIB
with support for priority level Statistics. Mandatory for a
SMON probe in a environment where IEEE 802.1p
priority-switching is implemented."
MODULE -- this module
MANDATORY-GROUPS {dataSourceCapsGroup,
smonPrioStatsGroup,
smonInformationGroup}
GROUP hcPrioTo100mbGroup
DESCRIPTION
"This group of VLAN priority statistics counters are mandatory
only for those network interfaces for which the corresponding
ifSpeed can be up to and including 100MB/sec."
GROUP hcPrio100mbPlusGroup
DESCRIPTION
"This group is mandatory only for those network
interfaces for which the corresponding ifSpeed is greater
than 100MB/sec. This group of VLAN priority
statistics is also mandatory for smonDataSources of type
VLAN or entPhysicalEntry"
::= { smonMIBCompliances 3 }
portCopyCompliance MODULE-COMPLIANCE
Waterman, et al. Standards Track [Page 35]
RFC 2613 SMON MIB June 1999
STATUS current
DESCRIPTION
"Describes the requirements for conformance with the port copy
functionality defined by the SMON MIB"
MODULE -- this module
MANDATORY-GROUPS {dataSourceCapsGroup,
portCopyConfigGroup,
smonInformationGroup}
::= { smonMIBCompliances 4}
dataSourceCapsGroup OBJECT-GROUP
OBJECTS { dataSourceRmonCaps,
dataSourceCopyCaps,
dataSourceCapsIfIndex}
STATUS current
DESCRIPTION
"Defines the objects that describe the capabilities of RMON
data sources."
::= {smonMIBGroups 1 }
smonVlanStatsGroup OBJECT-GROUP
OBJECTS { smonVlanStatsControlDataSource,
smonVlanStatsControlCreateTime,
smonVlanStatsControlOwner,
smonVlanStatsControlStatus,
smonVlanIdStatsTotalPkts,
smonVlanIdStatsTotalOctets,
smonVlanIdStatsNUcastPkts,
smonVlanIdStatsCreateTime}
STATUS current
DESCRIPTION
"Defines the switch monitoring specific statistics - per VLAN
Id on interfaces of 10MB or less."
::= { smonMIBGroups 2 }
smonPrioStatsGroup OBJECT-GROUP
OBJECTS { smonPrioStatsControlDataSource,
smonPrioStatsControlCreateTime,
smonPrioStatsControlOwner,
smonPrioStatsControlStatus,
smonPrioStatsPkts,
smonPrioStatsOctets}
STATUS current
DESCRIPTION
"Defines the switch monitoring specific statistics - per VLAN
Id on interface."
Waterman, et al. Standards Track [Page 36]
RFC 2613 SMON MIB June 1999
::= { smonMIBGroups 3 }
smonHcTo100mbGroup OBJECT-GROUP
OBJECTS { smonVlanIdStatsTotalOverflowOctets,
smonVlanIdStatsTotalHCOctets,
smonPrioStatsOverflowOctets,
smonPrioStatsHCOctets}
STATUS current
DESCRIPTION
"Defines the additional high capacity statistics needed to be
kept on interfaces with ifSpeed greater than 10MB/sec and
less than or equal to 100MB/sec."
::= { smonMIBGroups 4 }
smonHc100mbPlusGroup OBJECT-GROUP
OBJECTS { smonVlanIdStatsTotalOverflowPkts,
smonVlanIdStatsTotalHCPkts,
smonVlanIdStatsTotalOverflowOctets,
smonVlanIdStatsTotalHCOctets,
smonVlanIdStatsNUcastOverflowPkts,
smonVlanIdStatsNUcastHCPkts,
smonPrioStatsOverflowPkts,
smonPrioStatsHCPkts,
smonPrioStatsOverflowOctets,
smonPrioStatsHCOctets}
STATUS current
DESCRIPTION
"Defines the additional high capacity statistics needed to be
kept on interfaces with ifSpeed of more than 100MB/sec. These
statistics MUST also be kept on smonDataSources of type VLAN
or entPhysicalEntry."
::= { smonMIBGroups 5 }
hcVlanTo100mbGroup OBJECT-GROUP
OBJECTS { smonVlanIdStatsTotalOverflowOctets,
smonVlanIdStatsTotalHCOctets}
STATUS current
DESCRIPTION
"Defines the additional high capacity VLAN statistics
needed to be kept on interfaces with ifSpeed greater than
10MB/sec and less than or equal to 100MB/sec."
::= { smonMIBGroups 6 }
hcVlan100mbPlusGroup OBJECT-GROUP
OBJECTS { smonVlanIdStatsTotalOverflowPkts,
smonVlanIdStatsTotalHCPkts,
smonVlanIdStatsTotalOverflowOctets,
smonVlanIdStatsTotalHCOctets,
Waterman, et al. Standards Track [Page 37]
RFC 2613 SMON MIB June 1999
smonVlanIdStatsNUcastOverflowPkts,
smonVlanIdStatsNUcastHCPkts}
STATUS current
DESCRIPTION
"Defines the additional high capacity VLAN statistics
needed to be kept on interfaces with ifSpeed of more than
100MB/sec. These statistics MUST also be kept on
smonDataSources of type VLAN or entPhysicalEntry."
::= { smonMIBGroups 7 }
hcPrioTo100mbGroup OBJECT-GROUP
OBJECTS { smonPrioStatsOverflowOctets,
smonPrioStatsHCOctets }
STATUS current
DESCRIPTION
"Defines the additional high capacity VLAN priority
statistics needed to be kept on interfaces with
ifSpeed of greater than 10MB/sec and less than or equal
to 100MB/sec."
::= { smonMIBGroups 8 }
hcPrio100mbPlusGroup OBJECT-GROUP
OBJECTS { smonPrioStatsOverflowPkts,
smonPrioStatsHCPkts,
smonPrioStatsOverflowOctets,
smonPrioStatsHCOctets}
STATUS current
DESCRIPTION
"Defines the additional high capacity VLAN priority
statistics needed to be kept on interfaces with
ifSpeed of greater than 100MB/sec. These statistics MUST
also be kept on smonDataSources of type VLAN or
entPhysicalEntry."
::= { smonMIBGroups 9 }
smonVlanStatsExtGroup OBJECT-GROUP
OBJECTS {smonVlanIdStatsNUcastOctets,
smonVlanIdStatsNUcastOverflowOctets,
smonVlanIdStatsNUcastHCOctets}
STATUS current
DESCRIPTION
"Defines the switch monitoring specific statistics for systems
capable of counting non-unicast octets for a given dataSource
(as described in the dataSourceRmonCaps object)."
::= { smonMIBGroups 10 }
smonInformationGroup OBJECT-GROUP
OBJECTS { smonCapabilities }
Waterman, et al. Standards Track [Page 38]
RFC 2613 SMON MIB June 1999
STATUS current
DESCRIPTION
"An indication of the SMON capabilities supported by this
agent."
::= { smonMIBGroups 11 }
portCopyConfigGroup OBJECT-GROUP
OBJECTS { portCopyDestDropEvents,
portCopyDirection,
portCopyStatus
}
STATUS current
DESCRIPTION
"Defines the control objects for copy port operations."
::= { smonMIBGroups 12 }
END
6. References
[1] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for
Describing SNMP Management Frameworks", RFC 2571, April 1999.
[2] Rose, M. and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based Internets", STD 16, RFC
1155, May 1990.
[3] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
RFC 1212, March 1991.
[4] Rose, M., "A Convention for Defining Traps for use with the
SNMP", RFC 1215, March 1991.
[5] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[6] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
RFC 2579, April 1999.
[7] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
58, RFC 2580, April 1999.
[8] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, May 1990.
Waterman, et al. Standards Track [Page 39]
RFC 2613 SMON MIB June 1999
[9] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M. and S.
Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901,
January 1996.
[10] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M. and S.
Waldbusser, "Transport Mappings for Version 2 of the Simple
Network Management Protocol (SNMPv2)", RFC 1906, January 1996.
[11] Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message
Processing and Dispatching for the Simple Network Management
Protocol (SNMP)", RFC 2572, April 1999.
[12] Blumenthal, U., and B. Wijnen, "User-based Security Model for
Version 3 of the Simple Network Management Protocol (SNMPv3)",
RFC 2574, April 1999.
[13] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M. and S.
Waldbusser, "Protocol Operations for Version 2 of the Simple
Network Management Protocol (SNMPv2)", RFC 1905, January 1996.
[14] Levi, D., Meyer, P., and B. Stewart, "SNMP Applications", RFC
2573, April 1999.
[15] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access
Control Model for the Simple Network Management Protocol
(SNMP)", RFC 2575, April 1999.
[16] Waldbusser, S., "Remote Network Monitoring Management
Information Base Version 2 using SMIv2", RFC 2021, January 1997.
[17] Waldbusser, S., "Remote Network Monitoring Management
Information Base", RFC 1757, February 1995.
[18] McCloghrie, K. and A. Bierman, "Entity MIB", RFC 2037, October
1996.
[19] ISO/IEC Final CD 15802-3, ANSI/IEEE Std 802.1D-1998 "Information
technology - Telecommunications and information exchange between
systems - Local and metropolitan area networks - Common
specifications - Part 3: Media Access Control (MAC) Bridges:
Revision (Incorporating IEEE P802.1p: Traffic Class Expediting
and Dynamic Multicast Filtering)", March 1998.
[20] ANSI/IEEE Draft Standard P802.1Q/D10, "IEEE Standards for Local
and Metropolitan Area Networks: Virtual Bridged Local Area
Networks", March 1998.
Waterman, et al. Standards Track [Page 40]
RFC 2613 SMON MIB June 1999
[21] De Graaf, K., Romascanu, D., McMaster, D. and K. McCloghrie,
"Definition of Managed Objects for IEEE 802.3 Repeater Devices
using SMIv2", RFC 2108, February 1997.
[22] McCloghrie, K. and F. Kastenholz," The Interfaces Group MIB
using SMIv2", RFC 2233, November 1997.
[23] Decker, E. Langille, P., Rijsinghani, A. and K. McCloghrie.. -
"Definitions of Managed Objects for Bridges", RFC 1493, July
1993
[24] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC 2119, March 1997.
[25] McCloghrie, K. and M. Rose, Editors, "Management Information
Base for Network Management of TCP/IP-based internets: MIB-II",
STD 17, RFC 1213, March 1991.
7. Intellectual Property
The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances of
licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementors or users of this specification can
be obtained from the IETF Secretariat.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.
8. Security Considerations
There are a number of management objects defined in this MIB that
have a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
network operations.
Waterman, et al. Standards Track [Page 41]
RFC 2613 SMON MIB June 1999
There are a number of managed objects in this MIB that may contain
sensitive information. These are:
smonCapabilities
dataSourceCapsTable
portCopyTable
It is thus important to control even GET access to these objects and
possibly to even encrypt the values of these object when sending them
over the network via SNMP. Not all versions of SNMP provide features
for such a secure environment.
SNMPv1 by itself is not a secure environment. Even if the network
itself is secure (for example by using IPSec), even then, there is no
control as to who on the secure network is allowed to access and
GET/SET (read/change/create/delete) the objects in this MIB.
It is RECOMMENDED that the implementors consider the security
features as provided by the SNMPv3 framework. Specifically, the use
of the User-based Security Model RFC 2574 [12] and the View-based
Access Control Model RFC 2575 [15] is RECOMMENDED.
It is then a customer/user responsibility to ensure that the SNMP
entity giving access to an instance of this MIB, is properly
configured to give access to the objects only to those principals
(users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.
Waterman, et al. Standards Track [Page 42]
RFC 2613 SMON MIB June 1999
9. Authors' Addresses
Richard Waterman
Allot Communications
292 E. Main St.
Los Gatos, CA. 95030
USA
Phone: +1-408-399-3154
EMail: rich@allot.com
Bill Lahaye
Xylan Corporation
26707 W. Agoura Rd.
Calabasas, CA 91302
USA
Phone: +1-800-995-2612
EMail bill.lahaye@xylan.com
Dan Romascanu
Lucent Technologies
Atidim Technology Park, Bldg. #3
Tel Aviv, 61131
Israel
Phone: +972-3-645-8414
EMail: dromasca@lucent.com
Steven Waldbusser
International Network Services (INS)
1213 Innsbruck Dr.
Sunnyvale, CA 94089
Phone: +1-650-318-1251
EMail: waldbusser@ins.com
Waterman, et al. Standards Track [Page 43]
RFC 2613 SMON MIB June 1999
A. Full Copyright Statement
Copyright (C) The Internet Society (1999). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
Waterman, et al. Standards Track [Page 44]
Html markup produced by rfcmarkup 1.129b, available from
https://tools.ietf.org/tools/rfcmarkup/
