RFC 3014
Notification Log MIB
RFC 3014: Notification Log MIB 💖
Okay bestie, this is RFC 3014, and it's a Standards Track doc 🎀 about the Notification Log MIB, first published in November 2000 ✨. The editor of this version is R. Kavasseri from Cisco Systems, Inc. 💅 The previous version was written by B. Stewart 🫶. The title block doesn't list anything this one obsoletes or updates, so there's nothing extra to chase down 🦋.
Status of This Memo
This doc is an Internet standards track protocol for the Internet community, and it's asking for discussion and suggestions for improvements 💜. If you want to know where this protocol stands in standardization, check the current edition of "Internet Official Protocol Standards" (STD 1) 📚. Distribution of this memo is unlimited 🌈.
Copyright Notice
Copyright (C) The Internet Society (2000). All Rights Reserved. 💖
Abstract
This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community ✨. Basically, it describes the managed objects used for logging Simple Network Management Protocol (SNMP) Notifications 📝.
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 🔥.
Table of Contents
1 The SNMP Management Framework ................................. 2
2 Overview ...................................................... 3
2.1 Environment ................................................. 3
2.1.1 SNMP Engines and Contexts ................................. 4
2.1.2 Security .................................................. 4
2.2 Structure ................................................... 5
2.2.1 Configuration ............................................. 5
2.2.2 Statistics ................................................ 6
2.2.3 Log ....................................................... 6
2.3 Example ..................................................... 6
3 Definitions ................................................... 7
4 Intellectual Property ......................................... 23
5 References .................................................... 23
6 Security Considerations ....................................... 25
7 Author's Address .............................................. 25
8 Full Copyright Statement ...................................... 261. The SNMP Management Framework 🧚
Okay so the SNMP Management Framework is currently made up of five major components, and they're all lowkey iconic 👑
- An overall architecture, described in RFC 2571 [RFC2571].
- 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 it's described in STD 16, RFC 1155 [RFC1155], STD 16, RFC 1212 [RFC1212] and RFC 1215 [RFC1215]. The second version, called SMIv2, is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].
- Message protocols for transferring management information. The first version of the SNMP message protocol is SNMPv1, described in STD 15, RFC 1157 [RFC1157]. A second version, SNMPv2c, which is not an Internet standards track protocol, is described in RFC 1901 [RFC1901] and RFC 1906 [RFC1906]. The third version is SNMPv3, described in RFC 1906 [RFC1906], RFC 2572 [RFC2572] and RFC 2574 [RFC2574].
- Protocol operations for accessing management information. The first set of protocol operations and associated PDU formats is described in STD 15, RFC 1157 [RFC1157]. A second set is described in RFC 1905 [RFC1905].
- A set of fundamental applications described in RFC 2573 [RFC2573], plus the view-based access control mechanism described in RFC 2575 [RFC2575].
If you want a deeper intro to the current SNMP Management Framework, check out RFC 2570 [RFC2570] 📖
Managed objects are accessed through a virtual information store called the Management Information Base, or MIB 🦋 Objects in the MIB get defined using the mechanisms in the SMI 💅
This memo specifies a MIB module that is compliant to the SMIv2 🌸 A MIB conforming to SMIv1 can be produced through the appropriate translations. The resulting translated MIB must be semantically equivalent, except where objects or events are omitted because no translation is possible (use of Counter64). Some machine readable information in SMIv2 gets converted into textual descriptions in SMIv1 during translation. However, losing that machine readable information is not considered to change the semantics of the MIB 🙈
2. Overview 🌈
Systems that support SNMP often need a way to record Notification information, kind of like a safety net in case Notifications get lost 🫶 Those could be Traps, or Informs [RFC1905] that exceed retransmission limits. So this MIB gives other MIBs shared infrastructure in the form of a local logging function ✨ It's mainly meant for senders of Notifications, but receivers could use it too 🎀
Because of the Notification Log MIB, individual MIBs don't have to work as hard to record the transient information tied to an event in case the Notification message gets lost 💖 Applications can also poll the log to check that they haven't missed any important Notifications 👑
2.1. Environment 🧚
Here are the overall environmental concerns for the MIB:
- SNMP Engines and Contexts
- Security
2.1.1. SNMP Engines and Contexts 🦋
Okay, so there are two distinct information flows from multiple notification originators that you might log 💅 The first is notifications that get received (from one or more SNMP engines) for logging as SNMP informs and traps. The second is notifications delivered to an SNMP engine at the interface to the notification originator, using a notification mechanism other than SNMP informs or traps. That second flow gets modeled here as the SNMP engine (the one maintaining the log) sending a notification to itself 🤯 The rest of this section talks about handling the first flow, which is notifications received as SNMP informs or traps from multiple SNMP engines 🔥
As the SNMP architecture [RFC2571] describes, one system can run multiple SNMP engines that operate independently of each other, each with its own SNMP engine identification 💜 Also, inside any one engine there can be multiple named management contexts that support overlapping or disjoint sets of MIB objects and Notifications 🌸 So to make sense of a particular Notification, you need to know which SNMP engine and management context it came from ✨
To give each logged Notification the source info it needs, the MIB includes objects that record the Notification's source SNMP engine ID and management context name 📝
2.1.2. Security 🔐
Security for Notifications is kinda awkward 😭 Access control for the objects in a Notification can only be checked where the Notification is created. So that checking is only possible for locally-generated Notifications, and even then only when security credentials are available 💀
For this discussion, "security credentials" means the input values for the abstract service interface function isAccessAllowed [RFC2571]. Using those credentials means conceptually using that function to make sure the credentials allow access to the MIB objects in question, operating as a Notification Originator would under [RFC2573] 🧠
The Notification Log MIB has the notion of a "named log." 🎀 By using log names and view-based access control [RFC2575], a network administrator can give different users different access 👑 When an application creates a named log, the security credentials of the creator stay associated with that log 🫶
A managed system with fewer resources MAY disallow the creation of named logs, and then it only provides the default, null-named log. That log has no implicit security credentials for Notification object access control, so Notifications get put into it with no further checking. 🙈
When putting locally-generated Notifications into a named log, the managed system MUST use the security credentials associated with that log, and MUST apply the same access control rules described for a Notification Originator in [RFC2573] 🔥
The managed system SHOULD NOT apply access control when adding remotely-generated Notifications into either a named log or the default, null-named log 💅 In those cases, the security of the information in the log SHOULD be left to the normal, overall access control for the log itself 🌈
The Notification Log MIB lets applications set the maximum number of Notifications that can be logged, using nlmConfigGlobalEntryLimit 📝 Similarly, an application can set the maximum age with nlmConfigGlobalAgeOut, after which older Notifications MAY be timed out 🦋 Please be aware that contention between multiple applications trying to set these objects to different values MAY affect the reliability and completeness of the data each application sees. In other words, one application may change the value of either of these objects, which could cause some Notifications to be deleted before the other applications have had a chance to see them 😭 This could be used to orchestrate a denial-of-service attack. Methods for countering such an attack are for further study. 🚨 This one is seriously important, bestie, so don't skip it 💀
2.2. Structure 🌸
The MIB has the following sections:
- Configuration -- control over how much the log can hold and what Notifications are to be logged.
- Statistics -- indications of logging activity.
- Log -- the Notifications themselves.
2.2.1. Configuration ⭐
The configuration section has the objects that manage resource use by the MIB ✨
This section also has a table that specifies what logs exist and how they operate 🎀 Deciding which Notifications get logged depends on filters defined in the snmpNotifyFilterTable in the standard SNMP Notification MIB [RFC2573]. Those filters are identified by the initial index (snmpNotifyFilterName) from that table 🧚
2.2.2. Statistics 📊
The statistics section has counters for Notifications that were logged and discarded 💖 Those numbers help you understand the results of your log capacity configuration and spot any resource problems 👑
2.2.3. Log ✨
Okay so the log holds the Notifications and the objects that rode along in their variable binding list 🦋 Every entry gets an integer index that reflects when it was made. If you wanna collect every logged Notification (or check if you might've missed some), keep track of the highest index you grabbed and start from there on your next poll. ngl, that's so smart 💅 Also keep an eye on sysUpTime for a discontinuity, because that's what would've reset the index and maybe lost entries 😭
Variables live in a table indexed by Notification index and by variable index within that Notification 💜 The values are kept as a "discriminated union," with one value object per variable. Which value object gets created depends on the SNMP data type of the variable, and each distinct SNMP data type gets its own object of the matching type 🌸
So yeah, an app can rebuild the info from the Notification PDU using what's recorded in the log 🧚
2.3. Example 🎀
Here's an example config for a named log that only logs linkUp and linkDown Notifications 💖
In nlmConfigLogTable:
nlmConfigLogFilterName.5."links" = "link-status"
nlmConfigLogEntryLimit.5."links" = 0
nlmConfigLogAdminStatus.5."links" = enabled
nlmConfigLogOperStatus.5."links" = operational
nlmConfigLogStorageType.5."links" = nonVolatile
nlmConfigLogEntryStatus.5."links" = activeNote that snmpTraps is:
iso.org.dod.internet.snmpV2.snmpModules.snmpMIB.snmpMIBObjects.5Or numerically:
1.3.6.1.6.3.1.1.5And linkDown is snmpTraps.3 and linkUp is snmpTraps.4 🍓
So to allow the two Notifications in snmpNotifyFilterTable:
snmpNotifyFilterMask.11."link-status".1.3.6.1.6.3.1.1.5.3 = ''H
snmpNotifyFilterType.11."link-status".1.3.6.1.6.3.1.1.5.3 = include
snmpNotifyFilterStorageType.11."link-status".1.3.6.1.6.3.1.1.5.3
= nonVolatile
snmpNotifyFilterRowStatus.11."link-status".1.3.6.1.6.3.1.1.5.3
= active
snmpNotifyFilterMask.11."link-status".1.3.6.1.6.3.1.1.5.4 = ''H
snmpNotifyFilterType.11."link-status".1.3.6.1.6.3.1.1.5.4 = include
snmpNotifyFilterStorageType.11."link-status".1.3.6.1.6.3.1.1.5.4
= nonVolatile
snmpNotifyFilterRowStatus.11."link-status".1.3.6.1.6.3.1.1.5.4
= active3. Definitions 🦋
Here's the MIB module, copied exactly as it's written 💅
NOTIFICATION-LOG-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
Integer32, Unsigned32,
TimeTicks, Counter32, Counter64,
IpAddress, Opaque, mib-2 FROM SNMPv2-SMI
TimeStamp, DateAndTime,
StorageType, RowStatus,
TAddress, TDomain FROM SNMPv2-TC
SnmpAdminString, SnmpEngineID FROM SNMP-FRAMEWORK-MIB
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;
notificationLogMIB MODULE-IDENTITY
LAST-UPDATED "200011270000Z" -- 27 November 2000
ORGANIZATION "IETF Distributed Management Working Group"
CONTACT-INFO "Ramanathan Kavasseri
Cisco Systems, Inc.
170 West Tasman Drive,
San Jose CA 95134-1706.
Phone: +1 408 527 2446
Email: ramk@cisco.com"
DESCRIPTION
"The MIB module for logging SNMP Notifications, that is, Traps
and Informs."
-- Revision History
REVISION "200011270000Z" -- 27 November 2000
DESCRIPTION "This is the initial version of this MIB.
Published as RFC 3014"
::= { mib-2 92 }
notificationLogMIBObjects OBJECT IDENTIFIER ::= { notificationLogMIB 1 }
nlmConfig OBJECT IDENTIFIER ::= { notificationLogMIBObjects 1 }
nlmStats OBJECT IDENTIFIER ::= { notificationLogMIBObjects 2 }
nlmLog OBJECT IDENTIFIER ::= { notificationLogMIBObjects 3 }
--
-- Configuration Section
--
nlmConfigGlobalEntryLimit OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The maximum number of notification entries that may be held
in nlmLogTable for all nlmLogNames added together. A particular
setting does not guarantee that much data can be held.
If an application changes the limit while there are
Notifications in the log, the oldest Notifications MUST be
discarded to bring the log down to the new limit - thus the
value of nlmConfigGlobalEntryLimit MUST take precedence over
the values of nlmConfigGlobalAgeOut and nlmConfigLogEntryLimit,
even if the Notification being discarded has been present for
fewer minutes than the value of nlmConfigGlobalAgeOut, or if
the named log has fewer entries than that specified in
nlmConfigLogEntryLimit.
A value of 0 means no limit.
Please be aware that contention between multiple managers
trying to set this object to different values MAY affect the
reliability and completeness of data seen by each manager."
DEFVAL { 0 }
::= { nlmConfig 1 }
nlmConfigGlobalAgeOut OBJECT-TYPE
SYNTAX Unsigned32
UNITS "minutes"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The number of minutes a Notification SHOULD be kept in a log
before it is automatically removed.
If an application changes the value of nlmConfigGlobalAgeOut,
Notifications older than the new time MAY be discarded to meet the
new time.
A value of 0 means no age out.
Please be aware that contention between multiple managers
trying to set this object to different values MAY affect the
reliability and completeness of data seen by each manager."
DEFVAL { 1440 } -- 24 hours
::= { nlmConfig 2 }
--
-- Basic Log Configuration Table
--
nlmConfigLogTable OBJECT-TYPE
SYNTAX SEQUENCE OF NlmConfigLogEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of logging control entries."
::= { nlmConfig 3 }
nlmConfigLogEntry OBJECT-TYPE
SYNTAX NlmConfigLogEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A logging control entry. Depending on the entry's storage type
entries may be supplied by the system or created and deleted by
applications using nlmConfigLogEntryStatus."
INDEX { nlmLogName }
::= { nlmConfigLogTable 1 }
NlmConfigLogEntry ::= SEQUENCE {
nlmLogName SnmpAdminString,
nlmConfigLogFilterName SnmpAdminString,
nlmConfigLogEntryLimit Unsigned32,
nlmConfigLogAdminStatus INTEGER,
nlmConfigLogOperStatus INTEGER,
nlmConfigLogStorageType StorageType,
nlmConfigLogEntryStatus RowStatus
}
nlmLogName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE(0..32))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The name of the log.
An implementation may allow multiple named logs, up to some
implementation-specific limit (which may be none). A
zero-length log name is reserved for creation and deletion by
the managed system, and MUST be used as the default log name by
systems that do not support named logs."
::= { nlmConfigLogEntry 1 }
nlmConfigLogFilterName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE(0..32))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A value of snmpNotifyFilterProfileName as used as an index
into the snmpNotifyFilterTable in the SNMP Notification MIB,
specifying the locally or remotely originated Notifications
to be filtered out and not logged in this log.
A zero-length value or a name that does not identify an
existing entry in snmpNotifyFilterTable indicate no
Notifications are to be logged in this log."
DEFVAL { ''H }
::= { nlmConfigLogEntry 2 }
nlmConfigLogEntryLimit OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum number of notification entries that can be held in
nlmLogTable for this named log. A particular setting does not
guarantee that that much data can be held.
If an application changes the limit while there are
Notifications in the log, the oldest Notifications are discarded
to bring the log down to the new limit.
A value of 0 indicates no limit.
Please be aware that contention between multiple managers
trying to set this object to different values MAY affect the
reliability and completeness of data seen by each manager."
DEFVAL { 0 }
::= { nlmConfigLogEntry 3 }
nlmConfigLogAdminStatus OBJECT-TYPE
SYNTAX INTEGER { enabled(1), disabled(2) }
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Control to enable or disable the log without otherwise
disturbing the log's entry.
Please be aware that contention between multiple managers
trying to set this object to different values MAY affect the
reliability and completeness of data seen by each manager."
DEFVAL { enabled }
::= { nlmConfigLogEntry 4 }
nlmConfigLogOperStatus OBJECT-TYPE
SYNTAX INTEGER { disabled(1), operational(2), noFilter(3) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The operational status of this log:
disabled administratively disabled
operational administratively enabled and working
noFilter administratively enabled but either
nlmConfigLogFilterName is zero length
or does not name an existing entry in
snmpNotifyFilterTable"
::= { nlmConfigLogEntry 5 }
nlmConfigLogStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The storage type of this conceptual row."
::= { nlmConfigLogEntry 6 }
nlmConfigLogEntryStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Control for creating and deleting entries. Entries may be
modified while active.
For non-null-named logs, the managed system records the security
credentials from the request that sets nlmConfigLogStatus
to 'active' and uses that identity to apply access control to
the objects in the Notification to decide if that Notification
may be logged."
::= { nlmConfigLogEntry 7 }
--
-- Statistics Section
--
nlmStatsGlobalNotificationsLogged OBJECT-TYPE
SYNTAX Counter32
UNITS "notifications"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Notifications put into the nlmLogTable. This
counts a Notification once for each log entry, so a Notification
put into multiple logs is counted multiple times."
::= { nlmStats 1 }
nlmStatsGlobalNotificationsBumped OBJECT-TYPE
SYNTAX Counter32
UNITS "notifications"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of log entries discarded to make room for a new entry
due to lack of resources or the value of nlmConfigGlobalEntryLimit
or nlmConfigLogEntryLimit. This does not include entries discarded
due to the value of nlmConfigGlobalAgeOut."
::= { nlmStats 2 }
--
-- Log Statistics Table
--
nlmStatsLogTable OBJECT-TYPE
SYNTAX SEQUENCE OF NlmStatsLogEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of Notification log statistics entries."
::= { nlmStats 3 }
nlmStatsLogEntry OBJECT-TYPE
SYNTAX NlmStatsLogEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A Notification log statistics entry."
AUGMENTS { nlmConfigLogEntry }
::= { nlmStatsLogTable 1 }
NlmStatsLogEntry ::= SEQUENCE {
nlmStatsLogNotificationsLogged Counter32,
nlmStatsLogNotificationsBumped Counter32
}okay bestie, the log tables are giving main character energy ✨💅
nlmStatsLogNotificationsLogged OBJECT-TYPE
SYNTAX Counter32
UNITS "notifications"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of Notifications put in this named log."
::= { nlmStatsLogEntry 1 }
nlmStatsLogNotificationsBumped OBJECT-TYPE
SYNTAX Counter32
UNITS "notifications"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of log entries discarded from this named log to make
room for a new entry due to lack of resources or the value of
nlmConfigGlobalEntryLimit or nlmConfigLogEntryLimit. This does not
include entries discarded due to the value of
nlmConfigGlobalAgeOut."
::= { nlmStatsLogEntry 2 }
--
-- Log Section
--
--
-- Log Table
--
nlmLogTable OBJECT-TYPE
SYNTAX SEQUENCE OF NlmLogEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of Notification log entries.
It is an implementation-specific matter whether entries in this
table are preserved across initializations of the management
system. In general one would expect that they are not.
Note that keeping entries across initializations of the
management system leads to some confusion with counters and
TimeStamps, since both of those are based on sysUpTime, which
resets on management initialization. In this situation,
counters apply only after the reset and nlmLogTime for entries
made before the reset MUST be set to 0."
::= { nlmLog 1 }
nlmLogEntry OBJECT-TYPE
SYNTAX NlmLogEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A Notification log entry.
Entries appear in this table when Notifications occur and pass
filtering by nlmConfigLogFilterName and access control. They are
removed to make way for new entries due to lack of resources or
the values of nlmConfigGlobalEntryLimit, nlmConfigGlobalAgeOut, or
nlmConfigLogEntryLimit.
If adding an entry would exceed nlmConfigGlobalEntryLimit or system
resources in general, the oldest entry in any log SHOULD be removed
to make room for the new one.
If adding an entry would exceed nlmConfigLogEntryLimit the oldest
entry in that log SHOULD be removed to make room for the new one.
Before the managed system puts a locally-generated Notification
into a non-null-named log it assures that the creator of the log
has access to the information in the Notification. If not it
does not log that Notification in that log."
INDEX { nlmLogName, nlmLogIndex }
::= { nlmLogTable 1 }
NlmLogEntry ::= SEQUENCE {
nlmLogIndex Unsigned32,
nlmLogTime TimeStamp,
nlmLogDateAndTime DateAndTime,
nlmLogEngineID SnmpEngineID,
nlmLogEngineTAddress TAddress,
nlmLogEngineTDomain TDomain,
nlmLogContextEngineID SnmpEngineID,
nlmLogContextName SnmpAdminString,
nlmLogNotificationID OBJECT IDENTIFIER
}
nlmLogIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A monotonically increasing integer for the sole purpose of
indexing entries within the named log. When it reaches the
maximum value, an extremely unlikely event, the agent wraps the
value back to 1."
::= { nlmLogEntry 1 }
nlmLogTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime when the entry was placed in the log. If
the entry occurred before the most recent management system
initialization this object value MUST be set to zero."
::= { nlmLogEntry 2 }
nlmLogDateAndTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The local date and time when the entry was logged, instantiated
only by systems that have date and time capability."
::= { nlmLogEntry 3 }
nlmLogEngineID OBJECT-TYPE
SYNTAX SnmpEngineID
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The identification of the SNMP engine at which the Notification
originated.
If the log can contain Notifications from only one engine
or the Trap is in SNMPv1 format, this object is a zero-length
string."
::= { nlmLogEntry 4 }
nlmLogEngineTAddress OBJECT-TYPE
SYNTAX TAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The transport service address of the SNMP engine from which the
Notification was received, formatted according to the corresponding
value of nlmLogEngineTDomain. This is used to identify the source
of an SNMPv1 trap, since an nlmLogEngineId cannot be extracted
from the SNMPv1 trap pdu.
This object MUST always be instantiated, even if the log
can contain Notifications from only one engine.
Please be aware that the nlmLogEngineTAddress may not uniquely
identify the SNMP engine from which the Notification was received.
For example, if an SNMP engine uses DHCP or NAT to obtain
ip addresses, the address it uses may be shared with other
network devices, and hence will not uniquely identify the
SNMP engine."
::= { nlmLogEntry 5 }
nlmLogEngineTDomain OBJECT-TYPE
SYNTAX TDomain
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Indicates the kind of transport service by which a Notification
was received from an SNMP engine. nlmLogEngineTAddress contains
the transport service address of the SNMP engine from which
this Notification was received.
Possible values for this object are presently found in the
Transport Mappings for SNMPv2 document (RFC 1906 [8])."
::= { nlmLogEntry 6 }
nlmLogContextEngineID OBJECT-TYPE
SYNTAX SnmpEngineID
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If the Notification was received in a protocol which has a
contextEngineID element like SNMPv3, this object has that value.
Otherwise its value is a zero-length string."
::= { nlmLogEntry 7 }
nlmLogContextName OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The name of the SNMP MIB context from which the Notification came.
For SNMPv1 Traps this is the community string from the Trap."
::= { nlmLogEntry 8 }
nlmLogNotificationID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The NOTIFICATION-TYPE object identifier of the Notification that
occurred."
::= { nlmLogEntry 9 }
--
-- Log Variable Table
--
nlmLogVariableTable OBJECT-TYPE
SYNTAX SEQUENCE OF NlmLogVariableEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of variables to go with Notification log entries."
::= { nlmLog 2 }
nlmLogVariableEntry OBJECT-TYPE
SYNTAX NlmLogVariableEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A Notification log entry variable.
Entries appear in this table when there are variables in
the varbind list of a Notification in nlmLogTable."
INDEX { nlmLogName, nlmLogIndex, nlmLogVariableIndex }
::= { nlmLogVariableTable 1 }
NlmLogVariableEntry ::= SEQUENCE {
nlmLogVariableIndex Unsigned32,
nlmLogVariableID OBJECT IDENTIFIER,
nlmLogVariableValueType INTEGER,
nlmLogVariableCounter32Val Counter32,
nlmLogVariableUnsigned32Val Unsigned32,
nlmLogVariableTimeTicksVal TimeTicks,
nlmLogVariableInteger32Val Integer32,
nlmLogVariableOctetStringVal OCTET STRING,
nlmLogVariableIpAddressVal IpAddress,
nlmLogVariableOidVal OBJECT IDENTIFIER,
nlmLogVariableCounter64Val Counter64,
nlmLogVariableOpaqueVal Opaque
}
nlmLogVariableIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A monotonically increasing integer, starting at 1 for a given
nlmLogIndex, for indexing variables within the logged
Notification."
::= { nlmLogVariableEntry 1 }
nlmLogVariableID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The variable's object identifier."
::= { nlmLogVariableEntry 2 }
nlmLogVariableValueType OBJECT-TYPE
SYNTAX INTEGER { counter32(1), unsigned32(2), timeTicks(3),
integer32(4), ipAddress(5), octetString(6),
objectId(7), counter64(8), opaque(9) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of the value. One and only one of the value
objects that follow must be instantiated, based on this type."
::= { nlmLogVariableEntry 3 }
nlmLogVariableCounter32Val OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'counter32'."
::= { nlmLogVariableEntry 4 }
nlmLogVariableUnsigned32Val OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'unsigned32'."
::= { nlmLogVariableEntry 5 }
nlmLogVariableTimeTicksVal OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'timeTicks'."
::= { nlmLogVariableEntry 6 }
nlmLogVariableInteger32Val OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'integer32'."
::= { nlmLogVariableEntry 7 }
nlmLogVariableOctetStringVal OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'octetString'."
::= { nlmLogVariableEntry 8 }
nlmLogVariableIpAddressVal OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'ipAddress'.
Although this seems to be unfriendly for IPv6, we
have to recognize that there are a number of older
MIBs that do contain an IPv4 format address, known
as IpAddress.
IPv6 addresses are represented using TAddress or
InetAddress, and so the underlying datatype is
OCTET STRING, and their value would be stored in
the nlmLogVariableOctetStringVal column."
::= { nlmLogVariableEntry 9 }
nlmLogVariableOidVal OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'objectId'."
::= { nlmLogVariableEntry 10 }
nlmLogVariableCounter64Val OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'counter64'."
::= { nlmLogVariableEntry 11 }
nlmLogVariableOpaqueVal OBJECT-TYPE
SYNTAX Opaque
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value when nlmLogVariableType is 'opaque'."
::= { nlmLogVariableEntry 12 }
--
-- Conformance
--
notificationLogMIBConformance OBJECT IDENTIFIER ::=
{ notificationLogMIB 3 }
notificationLogMIBCompliances OBJECT IDENTIFIER ::=
{ notificationLogMIBConformance 1 }
notificationLogMIBGroups OBJECT IDENTIFIER ::=
{ notificationLogMIBConformance 2 }
-- ComplianceOkay so the compliance statement is where we get to say who has to do what 💅 Here it is, bestie:
notificationLogMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for entities which implement
the Notification Log MIB."
MODULE -- this module
MANDATORY-GROUPS {
notificationLogConfigGroup,
notificationLogStatsGroup,
notificationLogLogGroup
}
OBJECT nlmConfigGlobalEntryLimit
SYNTAX Unsigned32 (0..4294967295)
MIN-ACCESS read-only
DESCRIPTION
"Implementations may choose a limit and not allow it to be
changed or may enforce an upper or lower bound on the
limit."
OBJECT nlmConfigLogEntryLimit
SYNTAX Unsigned32 (0..4294967295)
MIN-ACCESS read-only
DESCRIPTION
"Implementations may choose a limit and not allow it to be
changed or may enforce an upper or lower bound on the
limit."
OBJECT nlmConfigLogEntryStatus
MIN-ACCESS read-only
DESCRIPTION
"Implementations may disallow the creation of named logs."
GROUP notificationLogDateGroup
DESCRIPTION
"This group is mandatory on systems that keep wall clock
date and time and should not be implemented on systems that
do not have a wall clock date."
::= { notificationLogMIBCompliances 1 }Lowkey the "may choose" lines are giving implementations main character freedom 🌸 They can pick a limit and lock it, or put an upper or lower bound on it, and the lowercase "may" is just vibes, not a rule-word 🎀 The date group is only a must-have for boxes that keep a wall clock date and time ⏰ If there's no wall clock date, it's a hard pass 🙈
Now the units of conformance, which are basically the bundles of objects that make up each group 🧺
-- Units of Conformance
notificationLogConfigGroup OBJECT-GROUP
OBJECTS {
nlmConfigGlobalEntryLimit,
nlmConfigGlobalAgeOut,
nlmConfigLogFilterName,
nlmConfigLogEntryLimit,
nlmConfigLogAdminStatus,
nlmConfigLogOperStatus,
nlmConfigLogStorageType,
nlmConfigLogEntryStatus
}
STATUS current
DESCRIPTION
"Notification log configuration management."
::= { notificationLogMIBGroups 1 }
notificationLogStatsGroup OBJECT-GROUP
OBJECTS {
nlmStatsGlobalNotificationsLogged,
nlmStatsGlobalNotificationsBumped,
nlmStatsLogNotificationsLogged,
nlmStatsLogNotificationsBumped
}
STATUS current
DESCRIPTION
"Notification log statistics."
::= { notificationLogMIBGroups 2 }
notificationLogLogGroup OBJECT-GROUP
OBJECTS {
nlmLogTime,
nlmLogEngineID,
nlmLogEngineTAddress,
nlmLogEngineTDomain,
nlmLogContextEngineID,
nlmLogContextName,
nlmLogNotificationID,
nlmLogVariableID,
nlmLogVariableValueType,
nlmLogVariableCounter32Val,
nlmLogVariableUnsigned32Val,
nlmLogVariableTimeTicksVal,
nlmLogVariableInteger32Val,
nlmLogVariableOctetStringVal,
nlmLogVariableIpAddressVal,
nlmLogVariableOidVal,
nlmLogVariableCounter64Val,
nlmLogVariableOpaqueVal
}
STATUS current
DESCRIPTION
"Notification log data."
::= { notificationLogMIBGroups 3 }
notificationLogDateGroup OBJECT-GROUP
OBJECTS {
nlmLogDateAndTime
}
STATUS current
DESCRIPTION
"Conditionally mandatory notification log data.
This group is mandatory on systems that keep wall
clock date and time and should not be implemented
on systems that do not have a wall clock date."
::= { notificationLogMIBGroups 4 }
END4. Intellectual Property ✨
Okay, legal-ish moment but make it cute 🦋 The IETF isn't taking a side on whether any IP rights floating around this tech are valid, how far they reach, or whether a license for them even exists. It also hasn't gone hunting for any of those rights, so don't assume it did 🙈 If you want the IETF's rules on rights in standards-track and standards-related docs, check BCP-11.
Any claims of rights that have been made available for publication, any assurances of licenses, or the results of trying to get a general license or permission for implementors or users to use those proprietary rights can all be requested from the IETF Secretariat 📬
The IETF also invites any interested party to flag any copyrights, patents, patent applications, or other proprietary rights that might cover technology needed to practice this standard. Send that info to the IETF Executive Director 💌
5. References 📚
Here's every source this spec leans on, all of them, no skipping 🫶
- [RFC2571] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for Describing SNMP Management Frameworks", RFC 2571, April 1999.
- [RFC1155] Rose, M. and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based Internets", STD 16, RFC 1155, May 1990.
- [RFC1212] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16, RFC 1212, March 1991.
- [RFC1215] Rose, M., "A Convention for Defining Traps for use with the SNMP", RFC 1215, March 1991.
- [RFC2578] 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.
- [RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999.
- [RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S. Waldbusser, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999.
- [RFC1157] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple Network Management Protocol", STD 15, RFC 1157, May 1990.
- [RFC1901] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901, January 1996.
- [RFC1906] 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.
- [RFC2572] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)", RFC 2572, April 1999.
- [RFC2574] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", RFC 2574, April 1999.
- [RFC1905] 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.
- [RFC2573] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC 2573, April 1999.
- [RFC2575] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)", RFC 2575, April 1999.
- [RFC2570] Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction to Version 3 of the Internet-standard Network Management Framework", RFC 2570, April 1999.
6. Security Considerations 💀
Okay, this is the serious part, so listen up 🔥 All the security drama for this spec lives in Section 3.1.2, so go read that one before you do anything else 🙈
7. Authors' Addresses 🧚
Meet the people who wrote this 💖
Bob Stewart
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
U.S.A.
Ramanathan Kavasseri
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
U.S.A.
Phone: +1 408 527 2446
EMail: ramk@cisco.com8. Full Copyright Statement 🌈
Copyright (C) The Internet Society (2000). All Rights Reserved.
Okay, so the vibe here is that you can copy and share this document, and you can make derivative works that comment on or explain it or help implement it. You can publish and distribute those in whole or in part with no restriction at all, as long as the copyright notice and this paragraph show up on every copy and derivative work 🎀 The catch is that this document itself can't be modified in any way, like removing the copyright notice or the references to the Internet Society or other Internet organizations. The exceptions are when you need it to develop Internet standards, in which case you have to follow the copyright procedures in the Internet Standards process, or when you're translating it into languages other than English 🌸
The permissions above are perpetual, and the Internet Society or its successors or assigns won't revoke them 💜
The disclaimer is the part that has to be exact, so here it is untouched 🙏
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 🫶
📦 where this page comes from
- ietf: rfc3014 2000-11
- 💖 girlified by claude-haiku-5-5 on : a language model's rewrite of the original, under its terms