RFC 3729
Application Performance Measurement MIB
Pages: 61
Proposed Standard
Proposed Standard
Part 2 of 3 – Pages 14 to 34
3. Definitions
APM-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, Counter32, Unsigned32 FROM SNMPv2-SMI TEXTUAL-CONVENTION, RowStatus, TimeStamp, TimeInterval, TruthValue, DateAndTime, StorageType FROM SNMPv2-TC MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP FROM SNMPv2-CONF SnmpAdminString FROM SNMP-FRAMEWORK-MIB rmon, OwnerString FROM RMON-MIB protocolDirLocalIndex FROM RMON2-MIB; -- Application Performance Measurement MIB apm MODULE-IDENTITY LAST-UPDATED "200402190000Z" -- February 19, 2004 ORGANIZATION "IETF RMON MIB Working Group" CONTACT-INFO "Author: Steve Waldbusser
Phone: +1-650-948-6500
Fax : +1-650-745-0671
Email: waldbusser@nextbeacon.com
Working Group Chair:
Andy Bierman
Cisco Systems, Inc.
Postal: 170 West Tasman Drive
San Jose, CA USA 95134
Tel: +1 408 527-3711
E-mail: abierman@cisco.com
Working Group Mailing List: <rmonmib@ietf.org>
To subscribe send email to: <rmonmib-request@ietf.org>
"
DESCRIPTION
"The MIB module for measuring application performance
as experienced by end-users.
Copyright (C) The Internet Society (2004). This version of
this MIB module is part of RFC 3729; see the RFC itself for
full legal notices."
REVISION "200402190000Z" -- February 19, 2004
DESCRIPTION
"The original version of this MIB Module, published as
RFC3729."
::= { rmon 23 }
apmMibObjects OBJECT IDENTIFIER ::= { apm 1 }
apmConformance OBJECT IDENTIFIER ::= { apm 2 }
apmCompliances OBJECT IDENTIFIER ::= { apmConformance 1 }
apmGroups OBJECT IDENTIFIER ::= { apmConformance 2 }
AppLocalIndex ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A locally arbitrary unique identifier associated with an
application or application verb.
All objects of type AppLocalIndex are assigned by the agent
out of a common number space. In other words, AppLocalIndex
values assigned to entries in one table must not overlap with
AppLocalIndex values assigned to entries in another
table. Further, every protocolDirLocalIndex value registered
by the agent automatically assigns the same value out of the
AppLocalIndex number space.
For example, if the protocolDirLocalIndex values { 1, 3, 5, 7 }
have been assigned, and the apmHttpFilterAppLocalIndex values
{ 6, 8, 9 } have been assigned:
- Assignment of new AppLocalIndex values must not use the
values { 1, 3, 5, 6, 7, 8, 9 }.
- AppLocalIndex values { 1, 3, 5, 7 } are automatically
assigned and are associated with the identical value of
protocolDirLocalIndex. In particular, an entry in the
apmAppDirTable indexed by a value provides further
information about a protocol indexed by the same value
in the protocolDirTable of RMON2.
The value for each supported application must remain constant
at least from one re-initialization of the entity's network
management system to the next re-initialization, except that
if an application is deleted and re-created, it must be
re-created with a new value that has not been used since the
last re-initialization.
The specific value is meaningful only within a given SNMP
entity. An AppLocalIndex value must not be re-used until the
next agent restart."
SYNTAX Unsigned32 (1..2147483647)
ProtocolDirNetworkAddress ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A network level address whose semantics and encoding are
specified by an associated protocolDirLocalIndex
value. Objects of this type must specify which
protocolDirLocalIndex value is used. This value is encoded
according to the encoding rules for the identified
protocolDirectory entry.
For example, if the associated protocolDirLocalIndex indicates
an encapsulation of ip, this object is encoded as a length
octet of 4, followed by the 4 octets of the ip address,
in network byte order.
Objects of this type may allow this value to be the zero
length string. If so, they must identify they meaning of this
value."
SYNTAX OCTET STRING (SIZE(0..255))
DataSourceOrZero ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Identifies the source of the data that the associated
function is configured to analyze. This source can be any
interface on this device.
In order to identify a particular interface, this
object shall identify the instance of the ifIndex
object, defined in [4], for the desired interface.
For example, if an entry were to receive data from
interface #1, this object would be set to ifIndex.1.
If the source of the data isn't an interface or cannot be
localized to an interface, this object would be set to 0.0"
REFERENCE "The DataSource textual convention is defined in
RFC 2021 [5]."
SYNTAX OBJECT IDENTIFIER
RmonClientID ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A long-lived unique ID assigned to an end-system. This ID is
assigned by the agent using an implementation-specific
algorithm.
Because a client machine may be assigned multiple addresses
over any time period it can be difficult to attribute
behavior to a particular client based solely on its
address. A ClientID may be assigned to provide a more
stable handle for referencing that client. The entity that
assigns the ClientID may use various implementation
techniques to keep track of a client but if the assigning
entity is unable to track client address mappings, it may map
client identifiers to client addresses rather than to
distinct client machines.
This is named ClientID because it helps to solve a problem
seen in network clients (servers usually have well-known,
long-lived addresses). However, ClientID's may be assigned to
any end-system regardless of its role on the network."
SYNTAX Unsigned32 (0..4294967295)
TransactionAggregationType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Specifies one of 4 different techniques for aggregating
transactions.
The metrics for a single transaction are the responsiveness of
the transaction and whether the transaction succeeded (a
boolean). When such metrics are aggregated in this MIB Module,
these metrics are replaced by averages and distributions of
responsiveness and availability. The metrics describing
aggregates are constant no matter which type of aggregation is
being performed. These metrics may be found in the
apmReportTable.
The flows(1) aggregation is the simplest. All transactions
that share common application/server/client 3-tuples are
aggregated together, resulting in a set of metrics for all
such unique 3-tuples.
The clients(2) aggregation results in somewhat more
aggregation (i.e., fewer resulting records). All transactions
that share common application/client tuples are aggregated
together, resulting in a set of metrics for all such unique
tuples.
The servers(3) aggregation usually results in still more
aggregation (i.e., fewer resulting records). All transactions
that share common application/server tuples are aggregated
together, resulting in a set of metrics for all such unique
tuples.
The applications(4) aggregation results in the most
aggregation (i.e., the fewest resulting records). All
transactions that share a common application are aggregated
together, resulting in a set of metrics for all such unique
applications.
Note that it is not meaningful to aggregate applications, as
different applications have widely varying characteristics. As a
result, this set of aggregations is complete."
SYNTAX INTEGER {
flows(1), -- Least Aggregation
clients(2),
servers(3),
applications(4) -- Most Aggregation
}
-- The APM Application Directory Group
-- The Application Directory Table contains a record for every
-- application monitored by this agent. This table is also used to
-- configure whether or not an application will be measured and which
-- bucket boundaries will be used for the application.
--
-- The bucket boundaries define the break-points between bins of a
-- histogram analysis for that application. As an example of how this
-- works, consider an entry representing response-time for http.
-- If the boundaries are set as follows:
-- Boundary1: 500 milliseconds
-- Boundary2: 1 second
-- Boundary3: 2 seconds
-- Boundary4: 5
-- Boundary5: 15
-- Boundary6: 60
--
-- If the following measurements are made (all in milliseconds):
-- 377, 8645, 1300, 487, 1405, 775, 1115, 850, 945, 1054, 7745, 9380
--
-- A report run during this interval would report the following
-- counts:
-- Bucket1: 2
-- Bucket2: 3
-- Bucket3: 4
-- Bucket4: 0
-- Bucket5: 3
-- Bucket6: 0
-- Bucket7: 0
apmAppDirTable OBJECT-TYPE
SYNTAX SEQUENCE OF ApmAppDirEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The APM MIB directory of applications and application
verbs. The agent will populate this table with all
applications/verbs of any responsivenessType it has the
capability to monitor. Since the agent populates this table
with every entry it has the capability to monitor, the
entries in this table are read-write, allowing the management
station to modify parameters in this table but not to add new
entries or delete entries (however, entries may be
disabled). If new entries are added to the apmHttpFilterTable
or the apmUserDefinedAppTable, the agent will add the
corresponding entries to this table.
It is an implementation-dependent matter as to how the agent
sets these default parameters. For example, it may leave
certain entries in this table 'off(0)' if the agent developer
believes that combination will be infrequently used, allowing
a manager that needs that capability to set it to 'on(1)'.
Some applications are registered in the RMON2 protocol
directory and some are registered in other tables in this
MIB Module. Regardless of where an application is originally
registered, it is assigned an AppLocalIndex value that is the
primary index for this table.
The contents of this table affect all reports and exceptions
generated by this agent. Accordingly, modification of this
table should be performed by a manager acting in the role of
administrator. In particular, management software should not
require or enforce particular configuration of this table - it
should reflect the preferences of the site administrator, not
the software author. As a practical matter, this requires
management software to allow the administrator to configure
the values it will use so that it can be adapted to the site
policy."
::= { apmMibObjects 1 }
apmAppDirEntry OBJECT-TYPE
SYNTAX ApmAppDirEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The APM MIB directory of applications and application
verbs. An entry will exist in this table for all applications
for which application performance measurement is supported."
INDEX { apmAppDirAppLocalIndex,
apmAppDirResponsivenessType }
::= { apmAppDirTable 1 }
ApmAppDirEntry ::= SEQUENCE {
apmAppDirAppLocalIndex AppLocalIndex,
apmAppDirResponsivenessType INTEGER,
apmAppDirConfig INTEGER,
apmAppDirResponsivenessBoundary1 Unsigned32,
apmAppDirResponsivenessBoundary2 Unsigned32,
apmAppDirResponsivenessBoundary3 Unsigned32,
apmAppDirResponsivenessBoundary4 Unsigned32,
apmAppDirResponsivenessBoundary5 Unsigned32,
apmAppDirResponsivenessBoundary6 Unsigned32
}
apmAppDirAppLocalIndex OBJECT-TYPE
SYNTAX AppLocalIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The AppLocalIndex assigned for this application Directory
entry."
::= { apmAppDirEntry 1 }
apmAppDirResponsivenessType OBJECT-TYPE
SYNTAX INTEGER {
transactionOriented(1),
throughputOriented(2),
streamingOriented(3)
}
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object describes and configures the agent's support for
application performance measurement for this application.
There are 3 types of measurements for different types of
applications:
Transaction-Oriented applications have a fairly constant
workload to perform for all transactions. The responsiveness
metric for transaction-oriented applications is application
response time (from first request to final delivery of
service) and is measured in milliseconds. This is
commonly referred to as end-user response time.
Throughput-Oriented applications have widely varying workloads
based on the nature of the client request. In particular,
throughput-oriented applications vary widely in the amount of
data that must be transported to satisfy the request. The
responsiveness metric for throughput-oriented applications is
kilobits per second.
Streaming-Oriented applications deliver data at a constant
metered rate of speed regardless of the responsiveness of the
networking and computing infrastructure. This constant rate of
speed is generally specified to be below (sometimes well
below) the nominal capability of the infrastructure. However,
when the infrastructures cannot deliver data at this speed,
interruption of service or degradation of service can
result. The responsiveness metric for streaming-oriented
applications is the ratio of time that the service is degraded
or interrupted to the total service time. This metric is
measured in parts per million.
Note that for some applications, measuring more than one
responsiveness type may be interesting. For agents that wish
to support more than one measurement for a application, they
will populate this table with multiple entries for that
application, one for each type."
::= { apmAppDirEntry 2 }
apmAppDirConfig OBJECT-TYPE
SYNTAX INTEGER {
off(1),
on(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object describes and configures support for application
performance measurement for this application.
If the value of this object is on(2), the agent supports
measurement of application performance metrics for this
application and is configured to measure such metrics for all
APM MIB functions and all interfaces. If the value of this
object is off(1), the agent supports measurement of
application performance for this application but is configured
to not measure these metrics for any APM MIB functions or
interfaces. Whenever this value changes from on(2) to off(1),
the agent shall delete all related entries in all tables in
this MIB Module.
The value of this object must persist across reboots."
::= { apmAppDirEntry 3 }
apmAppDirResponsivenessBoundary1 OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The boundary value between bucket1 and bucket 2. If this
value is modified, all entries in the apmReportTable must be
deleted by the agent.
The value of this object must persist across reboots."
::= { apmAppDirEntry 4 }
apmAppDirResponsivenessBoundary2 OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The boundary value between bucket2 and bucket 3. If this
value is modified, all entries in the apmReportTable must be
deleted by the agent.
The value of this object must persist across reboots."
::= { apmAppDirEntry 5 }
apmAppDirResponsivenessBoundary3 OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The boundary value between bucket3 and bucket 4. If this
value is modified, all entries in the apmReportTable must be
deleted by the agent.
The value of this object must persist across reboots."
::= { apmAppDirEntry 6 }
apmAppDirResponsivenessBoundary4 OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The boundary value between bucket4 and bucket 5. If this
value is modified, all entries in the apmReportTable must be
deleted by the agent.
The value of this object must persist across reboots."
::= { apmAppDirEntry 7 }
apmAppDirResponsivenessBoundary5 OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The boundary value between bucket5 and bucket 6. If this
value is modified, all entries in the apmReportTable must be
deleted by the agent.
The value of this object must persist across reboots."
::= { apmAppDirEntry 8 }
apmAppDirResponsivenessBoundary6 OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The boundary value between bucket6 and bucket 7. If this
value is modified, all entries in the apmReportTable must be
deleted by the agent.
The value of this object must persist across reboots."
::= { apmAppDirEntry 9 }
-- Scalars related to the Application Directory table
apmBucketBoundaryLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime the last time that any bucket boundary
in any appDirEntry was changed. This object can help to
determine if two managers are both trying to enforce different
configurations of this table."
::= { apmMibObjects 2 }
apmAppDirID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object allows managers to avoid downloading application
directory information when the directory is set to a known
(usually fixed) configuration.
If the value of this object isn't 0.0, it signifies
that the entire contents of the apmAppDirTable,
apmHttpFilterTable, apmUserDefinedAppTable and
protocolDirTable are equal to a known state identified
by the value of this object. If a manager recognizes this
value as identifying a directory configuration it has a local
copy of, it may use this local copy rather than downloading
these tables. Note that it may have downloaded this local copy
(and the ID) from another agent and used this copy for all
other agents that advertised the same ID.
If an agent recognizes that the entire contents of the
apmAppDirTable, apmHttpFilterTable,
apmUserDefinedAppTable and protocolDirTable are equal to
a known state to which an ID has been assigned, it should set
this object to that ID.
In many cases when this feature is used, the application
directory information will be in read-only memory and thus the
tables may not be modified via SNMP requests. In the event
that the tables are writable and a modification is made, the
agent is responsible for setting this object to 0.0 if it
cannot determine that the state is equal to a known state.
An agent is not obligated to recognize and advertise all such
registered states as it may not have knowledge of all states.
Thus, a manager may encounter agents whose DirectoryID value
is 0.0 even though the contents of the directory were equal to
a registered state.
Note that the contents of those tables includes the
protocolDirLocalIndex and appLocalIndex values. In other
words, these values can't be assigned randomly on each agent,
but must be equal to values that are part of the known
state. While it is possible for a manager to download
application directory details using SNMP and to set the
appropriate directoryID, the manager would need to have some
scheme to ensure consistent values of LocalIndex variables
from agent to agent. Such schemes are outside the scope of
this specification.
Application directory registrations are unique within an
administrative domain.
Typically these registrations will be made by an agent
software developer who will set the application directory
tables to a read-only state and assign a DirectoryID to that
state. Thus, all agents running this software would share the
same DirectoryID. As the application directory might change
from one software release to the next, the developer may
register different DirectoryID's for each software release.
A customer could also create a site-wide application directory
configuration and assign a DirectoryID to that configuration
as long as consistent values of LocalIndex variables can be
ensured.
The value of this object must persist across reboots."
::= { apmMibObjects 3 }
-- APM HTTP Filter Table
-- The HTTP Filter Table creates virtual applications which measure the
-- performance of certain web pages or sets of web pages. Some
-- circumstances where this is particularly useful are:
--
-- - An Intranet or ASP scenario where a business application is
-- running on one or more web pages or scripts.
-- (i.e., /expense/submit.cgi?employeeID=3426&...)
-- - A web-hosting scenario where one wants to measure the
-- service level for a particular customer
-- - An e-commerce scenario where the performance of certain
-- pages needs to be monitored more closely.
-- (i.e., shopping cart, shipping, credit card authorization)
apmHttpFilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF ApmHttpFilterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that creates virtual applications which measure the
performance of certain web pages or sets of web pages.
When an entry is added to this table, the agent will
automatically create one or more entries in the
apmAppDirTable (one for each responsivenessType it is
capable of measuring).
Note that when entries exist in this table some HTTP
transactions will be summarized twice: in applications
represented here as well as the HTTP application. If entries
in this table overlap, these transactions may be summarized
additional times.
The contents of this table affect all reports and exceptions
generated by this agent. Accordingly, modification of this
table should be performed by a manager acting in the role of
administrator. In particular, management software should not
require or enforce particular configuration of this table - it
should reflect the preferences of the site administrator, not
the software author."
::= { apmMibObjects 4 }
apmHttpFilterEntry OBJECT-TYPE
SYNTAX ApmHttpFilterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A virtual application which measure the performance of certain
web pages or sets of web pages."
INDEX { apmHttpFilterIndex }
::= { apmHttpFilterTable 1 }
ApmHttpFilterEntry ::= SEQUENCE {
apmHttpFilterIndex Unsigned32,
apmHttpFilterAppLocalIndex AppLocalIndex,
apmHttpFilterServerProtocol Unsigned32,
apmHttpFilterServerAddress ProtocolDirNetworkAddress,
apmHttpFilterURLPath OCTET STRING,
apmHttpFilterMatchType INTEGER,
apmHttpFilterOwner OwnerString,
apmHttpFilterStorageType StorageType,
apmHttpFilterRowStatus RowStatus
}
apmHttpFilterIndex OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An index that uniquely identifies an entry in the
apmHttpFilterTable."
::= { apmHttpFilterEntry 1 }
apmHttpFilterAppLocalIndex OBJECT-TYPE
SYNTAX AppLocalIndex
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The AppLocalIndex that represents HTTP transactions
that match this entry.
This object is read-only. A value is created by the agent from
an unused AppLocalIndex value when this apmHttpFilterEntry is
created."
::= { apmHttpFilterEntry 2 }
apmHttpFilterServerProtocol OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The protocolDirLocalIndex value of the network level protocol
of the apmHttpFilterServerAddress."
::= { apmHttpFilterEntry 3 }
apmHttpFilterServerAddress OBJECT-TYPE
SYNTAX ProtocolDirNetworkAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This entry will only represent transactions coming from the
network address specified in this object.
This is represented as an octet string with
specific semantics and length as identified
by the associated apmHttpFilterServerProtocol object.
If this object is the zero-length string, then this entry will
match one of the addresses represented by the 'host' component
of the associated apmHttpFilterURLPath object, where the
format if a URL [9] is
http://<host>:<port>/<path>?<searchpart>."
::= { apmHttpFilterEntry 4 }
apmHttpFilterURLPath OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..65535))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This entry will only represent HTTP transactions
where the URL path component in the request matches this
value. This value represents the requested path regardless of
any substitution that the server might perform.
Prior to the matching, the URL is stripped of any server
address or DNS name and consists solely of the path name on
that server.
If the length of this object is zero, then this entry will
match if the associated apmHttpFilterServerAddress match. If
the length of that object is also zero, then this entry will
match nothing.
The value of the associated apmHttpFilterMatchType dictates
the type of matching that will be attempted."
::= { apmHttpFilterEntry 5 }
apmHttpFilterMatchType OBJECT-TYPE
SYNTAX INTEGER {
exact(1),
stripTrailingSlash(2),
prefix(3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The matching algorithm used to compare the URL pathname.
If the value is exact(1), then the pathname component will be
compared with the associated apmHttpFilterURLPath and
will only be associated with this entry if it matches exactly.
If the value is stripTrailingSlash(2), then the pathname
component will be compared with the associated
apmHttpFilterURLPath and will only be associated with this
entry if it matches exactly or if the pathname ends with a '/'
symbol and matches apmHttpFilterURLPath if the '/' symbol is
removed from the pathname. This option exists for those paths
where an optional trailing slash is possible but for which a
prefix match would be too broad.
If the value is prefix(3), then the pathname component will be
compared with the associated apmHttpFilterURLPath and will
only be associated with this entry if the beginning of the
pathname matches every octet of this value. Octets that extend
beyond the length of this value are ignored."
::= { apmHttpFilterEntry 6 }
apmHttpFilterOwner 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."
::= { apmHttpFilterEntry 7 }
apmHttpFilterStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The storage type of this apmHttpFilterEntry. If the value of
this object is 'permanent', no objects in this row need to be
writable."
::= { apmHttpFilterEntry 8 }
apmHttpFilterRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this apmHttpFilterEntry. No objects in this row
may be modified while the row's status is 'active'."
::= { apmHttpFilterEntry 9 }
apmHttpIgnoreUnregisteredURLs OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"When true, APM measurements of HTTP transactions will only
measure transactions relating to URLs that match a filter in
the apmHttpFilterTable. Thus, measurements for the HTTP
application will present aggregated statistics for
URL-matching HTTP transactions and measurements for the HTTP
GET application verb will present aggregated statistics for
URL-matching HTTP GET transactions.
This will be used in environments that wish to monitor only
targeted URLs and to ignore large volumes of internet web
browsing traffic.
This object affects all APM reports and exceptions generated
by this agent. Accordingly, modification of this object should
be performed by a manager acting in the role of
administrator. In particular, management software should not
require or enforce particular configuration of this object -
it should reflect the preferences of the site administrator,
not the software author.
The value of this object must persist across reboots."
::= { apmMibObjects 5 }
apmHttp4xxIsFailure OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"When true, this agent will recognize HTTP errors in the range
of 400 through 499 and will treat them as unavailable
transactions. When false or when this object isn't supported,
they will be treated as successful transactions.
This object allows such error pages to be tracked at the
possible expense of having user typos treated as poor service
on the part of the web server.
This object affects all reports and exceptions generated by
this agent. Accordingly, modification of this object should be
performed by a manager acting in the role of administrator. In
particular, management software should not require or enforce
particular configuration of this object - it should reflect
the preferences of the site administrator, not the software
author.
The value of this object must persist across reboots."
::= { apmMibObjects 6 }
-- The APM User-Defined Application Table
-- Many application protocols will never be registered with a
-- standards body (and thus included in a protocol directory standard)
-- because they are custom, in-house or proprietary
-- applications. Nevertheless, implementation strategies exist for
-- monitoring the end-user experience of these applications.
--
-- This read-only table provides a means for the agent to advertise
-- which user-defined applications it is monitoring and to associate
-- each with an AppLocalIndex value. It is an implementation-dependent
-- matter as to how the agent learns how to monitor these
-- applications.
apmUserDefinedAppTable OBJECT-TYPE
SYNTAX SEQUENCE OF ApmUserDefinedAppEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that advertises user-defined applications that the
agent is measuring.
The agent will automatically create one or more entries in the
apmAppDirTable (one for each responsivenessType it is
capable of measuring) for each entry in this table.
Note that when entries exist in this table some
transactions can be summarized more than once if there is
overlap between applications defined here and applications
defined in the protocol directory or in the httpFilter table."
::= { apmMibObjects 7 }
apmUserDefinedAppEntry OBJECT-TYPE
SYNTAX ApmUserDefinedAppEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A user-defined application that the agent is measuring, along
with its AppLocalIndex assignment.
The apmAppDirAppLocalIndex value in the index identifies
the agent-assigned AppLocalIndex value for this user-defined
application."
INDEX { apmAppDirAppLocalIndex }
::= { apmUserDefinedAppTable 1 }
ApmUserDefinedAppEntry ::= SEQUENCE {
apmUserDefinedAppParentIndex Unsigned32,
apmUserDefinedAppApplication SnmpAdminString
}
apmUserDefinedAppParentIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The protocolDirLocalIndex value of the highest-layer
protocol defined in the protocolDirTable that this
application is a child of."
::= { apmUserDefinedAppEntry 1 }
apmUserDefinedAppApplication OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A human readable descriptive tag for this application."
::= { apmUserDefinedAppEntry 2 }
-- The APM Name Table
apmNameTable OBJECT-TYPE
SYNTAX SEQUENCE OF ApmNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A client machine may have multiple addresses during a period
of monitoring. The apmNameTable assigns a long-lived
identifier to a client and records what addresses were
assigned to that client for periods of time. Various
implementation techniques exist for tracking this mapping but
if an agent is unable to track client address mappings, it may
map client identifiers to client addresses rather than to
distinct client machines.
A particular apmNameClientID should be a constant attribute of
a particular client. When available, the agent may also record
the machine name and/or user name which may be valuable for
displaying to humans. The apmNameMachineName and
apmNameUserName are relatively constant, changing only if
these attributes actually change on the client.
The agent will store a historical log of these entries, aging
out old entries as the log becomes too large. Since this table
contains information vital to the interpretation of other
tables (e.g., the apmReportTable), the agent should ensure that
the log doesn't age out entries that would be referenced by
data in those tables.
Note that an entry for a clientID is active from its
StartTime until the StartTime of another entry (for the same
clientID) that supersedes it, or 'now' if none supersede
it. Therefore, if a clientID only has a single entry, it is by
definition very new and should never be aged out. No entry for
a clientID should be aged out unless it has been updated by a
new entry for the client (i.e., with an updated address) and
only if the new entry is 'old' enough.
To determine how old is old enough, compute the maximum value
of Interval * (NumReports + 1) of all entries in the
apmReportControlTable (the '+ 1' is to allow a reasonable
period of time for the report to be downloaded). Then take the
larger of this value and the age in seconds of the oldest
entry in the current transaction table. If an entry for a
clientID is superseded by another entry whose StartTime is
more than this many seconds ago, then the older entry may be
deleted."
::= { apmMibObjects 8 }
apmNameEntry OBJECT-TYPE
SYNTAX ApmNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the APM name table. An entry exists for each
period of time that a client has been associated with a
particular address.
The protocolDirLocalIndex value in the index identifies
the network layer protocol for the ClientAddress for this
entry.
Note that some combinations of index values may result in an
index that exceeds 128 sub-identifiers in length which exceeds
the maximum for the SNMP protocol. Implementations should take
care to avoid such combinations."
INDEX { apmNameClientID,
protocolDirLocalIndex, apmNameClientAddress,
apmNameMappingStartTime }
::= { apmNameTable 1 }
ApmNameEntry ::= SEQUENCE {
apmNameClientID RmonClientID,
apmNameClientAddress ProtocolDirNetworkAddress,
apmNameMappingStartTime DateAndTime,
apmNameMachineName SnmpAdminString,
apmNameUserName SnmpAdminString
}
apmNameClientID OBJECT-TYPE
SYNTAX RmonClientID
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique ID assigned to the machine represented by this
mapping. This ID is assigned by the agent using an
implementation-specific algorithm."
::= { apmNameEntry 1 }
apmNameClientAddress OBJECT-TYPE
SYNTAX ProtocolDirNetworkAddress (SIZE(1..255))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The network client address for this client when this mapping
was active.
This is represented as an octet string with specific semantics
and length as identified by the protocolDirLocalIndex
component of the index. This object may not be the zero length
string.
Since this object is an index variable, it is encoded in the
index according to the index encoding rules. For example, if
the protocolDirLocalIndex component of the index indicates an
encapsulation of ip, this object is encoded as a length octet
of 4, followed by the 4 octets of the ip address, in network
byte order. Care should be taken to avoid values of this
object that, in conjunction with the other index variables,
would result in an index longer than SNMP's maximum of 128
subidentifiers."
::= { apmNameEntry 2 }
apmNameMappingStartTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The time that the agent first discovered this mapping
as active."
::= { apmNameEntry 3 }