SNMP-FRAMEWORK-MIB(7)



SNMP-FRAMEWORK-MIB(7)                 MIB                SNMP-FRAMEWORK-MIB(7)

NAME
       SNMP-FRAMEWORK-MIB  - The Erlang/OTP MIB module for textual conventions
       used in the SNMP management architecture

DESCRIPTION
          SNMP-FRAMEWORK-MIB DEFINITIONS ::= BEGIN

          IMPORTS
              MODULE-IDENTITY, OBJECT-TYPE,
              OBJECT-IDENTITY,
              snmpModules                           FROM SNMPv2-SMI
              TEXTUAL-CONVENTION                    FROM SNMPv2-TC
              MODULE-COMPLIANCE, OBJECT-GROUP       FROM SNMPv2-CONF;

          snmpFrameworkMIB MODULE-IDENTITY
              LAST-UPDATED "9901190000Z"            -- 19 January 1999
              ORGANIZATION "SNMPv3 Working Group"
              CONTACT-INFO "WG-EMail:   snmpv3@tis.com
                            Subscribe:  majordomo@tis.com
                                        In message body:  subscribe snmpv3

                            Chair:      Russ Mundy
                                        TIS Labs at Network Associates
                            postal:     3060 Washington Rd
                                        Glenwood MD 21738
                                        USA
                            EMail:      mundy@tis.com
                            phone:      +1 301-854-6889

                            Co-editor   Dave Harrington
                                        Cabletron Systems, Inc.
                            postal:     Post Office Box 5005
                                        Mail Stop: Durham
                                        35 Industrial Way
                                        Rochester, NH 03867-5005
                                        USA
                            EMail:      dbh@ctron.com
                            phone:      +1 603-337-7357

                            Co-editor   Randy Presuhn
                                        BMC Software, Inc.
                            postal:     965 Stewart Drive
                                        Sunnyvale, CA 94086
                                        USA
                            EMail:      randy_presuhn@bmc.com
                            phone:      +1 408-616-3100

                            Co-editor:  Bert Wijnen
                                        IBM T.J. Watson Research
                            postal:     Schagen 33
                                        3461 GL Linschoten
                                        Netherlands
                            EMail:      wijnen@vnet.ibm.com
                            phone:      +31 348-432-794
                           "
              DESCRIPTION  "The SNMP Management Architecture MIB"
              REVISION     "9901190000Z"            -- 19 January 1999
              DESCRIPTION  "Updated editors' addresses, fixed typos.
                           "
              REVISION     "9711200000Z"            -- 20 November 1997
              DESCRIPTION  "The initial version, published in RFC 2271.
                           "
              ::= { snmpModules 10 }

          -- Textual Conventions used in the SNMP Management Architecture ***

          SnmpEngineID ::= TEXTUAL-CONVENTION
              STATUS       current
              DESCRIPTION "An SNMP engine's administratively-unique identifier.
                           Objects of this type are for identification, not for
                           addressing, even though it is possible that an
                           address may have been used in the generation of
                           a specific value.

                           The value for this object may not be all zeros or
                           all 'ff'H or the empty (zero length) string.

                           The initial value for this object may be configured
                           via an operator console entry or via an algorithmic
                           function.  In the latter case, the following
                           example algorithm is recommended.

                           In cases where there are multiple engines on the
                           same system, the use of this algorithm is NOT
                           appropriate, as it would result in all of those
                           engines ending up with the same ID value.

                           1) The very first bit is used to indicate how the
                              rest of the data is composed.

                              0 - as defined by enterprise using former methods
                                  that existed before SNMPv3. See item 2 below.

                              1 - as defined by this architecture, see item 3
                                  below.

                              Note that this allows existing uses of the
                              engineID (also known as AgentID [RFC1910]) to
                              co-exist with any new uses.

                           2) The snmpEngineID has a length of 12 octets.

                              The first four octets are set to the binary
                              equivalent of the agent's SNMP management
                              private enterprise number as assigned by the
                              Internet Assigned Numbers Authority (IANA).
                              For example, if Acme Networks has been assigned
                              { enterprises 696 }, the first four octets would
                              be assigned '000002b8'H.

                              The remaining eight octets are determined via
                              one or more enterprise-specific methods. Such
                              methods must be designed so as to maximize the
                              possibility that the value of this object will
                              be unique in the agent's administrative domain.
                              For example, it may be the IP address of the SNMP
                              entity, or the MAC address of one of the
                              interfaces, with each address suitably padded
                              with random octets.  If multiple methods are
                              defined, then it is recommended that the first
                              octet indicate the method being used and the
                              remaining octets be a function of the method.

                           3) The length of the octet strings varies.

                              The first four octets are set to the binary
                              equivalent of the agent's SNMP management
                              private enterprise number as assigned by the
                              Internet Assigned Numbers Authority (IANA).
                              For example, if Acme Networks has been assigned
                              { enterprises 696 }, the first four octets would
                              be assigned '000002b8'H.

                              The very first bit is set to 1. For example, the
                              above value for Acme Networks now changes to be
                              '800002b8'H.

                              The fifth octet indicates how the rest (6th and
                              following octets) are formatted. The values for
                              the fifth octet are:

                                0     - reserved, unused.

                                1     - IPv4 address (4 octets)
                                        lowest non-special IP address

                                2     - IPv6 address (16 octets)
                                        lowest non-special IP address

                                3     - MAC address (6 octets)
                                        lowest IEEE MAC address, canonical
                                        order

                                4     - Text, administratively assigned
                                        Maximum remaining length 27

                                5     - Octets, administratively assigned
                                        Maximum remaining length 27

                                6-127 - reserved, unused

                              127-255 - as defined by the enterprise
                                        Maximum remaining length 27
                          "
              SYNTAX       OCTET STRING (SIZE(5..32))

          SnmpSecurityModel ::= TEXTUAL-CONVENTION
              STATUS       current
              DESCRIPTION "An identifier that uniquely identifies a
                           securityModel of the Security Subsystem within the
                           SNMP Management Architecture.

                           The values for securityModel are allocated as
                           follows:

                           - The zero value is reserved.
                           - Values between 1 and 255, inclusive, are reserved
                             for standards-track Security Models and are
                             managed by the Internet Assigned Numbers Authority
                             (IANA).
                           - Values greater than 255 are allocated to
                             enterprise-specific Security Models.  An
                             enterprise-specific securityModel value is defined
                             to be:

                             enterpriseID * 256 + security model within
                             enterprise

                             For example, the fourth Security Model defined by
                             the enterprise whose enterpriseID is 1 would be
                             260.

                           This scheme for allocation of securityModel
                           values allows for a maximum of 255 standards-
                           based Security Models, and for a maximum of
                           255 Security Models per enterprise.

                           It is believed that the assignment of new
                           securityModel values will be rare in practice
                           because the larger the number of simultaneously
                           utilized Security Models, the larger the
                           chance that interoperability will suffer.
                           Consequently, it is believed that such a range
                           will be sufficient.  In the unlikely event that
                           the standards committee finds this number to be
                           insufficient over time, an enterprise number
                           can be allocated to obtain an additional 255
                           possible values.

                           Note that the most significant bit must be zero;
                           hence, there are 23 bits allocated for various
                           organizations to design and define non-standard
                           securityModels.  This limits the ability to
                           define new proprietary implementations of Security
                           Models to the first 8,388,608 enterprises.

                           It is worthwhile to note that, in its encoded
                           form, the securityModel value will normally
                           require only a single byte since, in practice,
                           the leftmost bits will be zero for most messages
                           and sign extension is suppressed by the encoding
                           rules.

                           As of this writing, there are several values
                           of securityModel defined for use with SNMP or
                           reserved for use with supporting MIB objects.
                           They are as follows:

                               0  reserved for 'any'
                               1  reserved for SNMPv1
                               2  reserved for SNMPv2c
                               3  User-Based Security Model (USM)
                          "
              SYNTAX       INTEGER(0 .. 2147483647)

          SnmpMessageProcessingModel ::= TEXTUAL-CONVENTION
              STATUS       current
              DESCRIPTION "An identifier that uniquely identifies a Message
                           Processing Model of the Message Processing
                           Subsystem within a SNMP Management Architecture.

                           The values for messageProcessingModel are
                           allocated as follows:

                           - Values between 0 and 255, inclusive, are
                             reserved for standards-track Message Processing
                             Models and are managed by the Internet Assigned
                             Numbers Authority (IANA).

                           - Values greater than 255 are allocated to
                             enterprise-specific Message Processing Models.
                             An enterprise messageProcessingModel value is
                             defined to be:

                             enterpriseID * 256 +
                                  messageProcessingModel within enterprise

                             For example, the fourth Message Processing Model
                             defined by the enterprise whose enterpriseID
                             is 1 would be 260.

                           This scheme for allocating messageProcessingModel
                           values allows for a maximum of 255 standards-
                           based Message Processing Models, and for a
                           maximum of 255 Message Processing Models per
                           enterprise.

                           It is believed that the assignment of new
                           messageProcessingModel values will be rare
                           in practice because the larger the number of
                           simultaneously utilized Message Processing Models,
                           the larger the chance that interoperability
                           will suffer. It is believed that such a range
                           will be sufficient.  In the unlikely event that
                           the standards committee finds this number to be
                           insufficient over time, an enterprise number
                           can be allocated to obtain an additional 256
                           possible values.

                           Note that the most significant bit must be zero;
                           hence, there are 23 bits allocated for various
                           organizations to design and define non-standard
                           messageProcessingModels.  This limits the ability
                           to define new proprietary implementations of
                           Message Processing Models to the first 8,388,608
                           enterprises.

                           It is worthwhile to note that, in its encoded
                           form, the messageProcessingModel value will
                           normally require only a single byte since, in
                           practice, the leftmost bits will be zero for
                           most messages and sign extension is suppressed
                           by the encoding rules.

                           As of this writing, there are several values of
                           messageProcessingModel defined for use with SNMP.
                           They are as follows:

                               0  reserved for SNMPv1
                               1  reserved for SNMPv2c
                               2  reserved for SNMPv2u and SNMPv2*
                               3  reserved for SNMPv3
                          "
              SYNTAX       INTEGER(0 .. 2147483647)

          SnmpSecurityLevel ::= TEXTUAL-CONVENTION
              STATUS       current
              DESCRIPTION "A Level of Security at which SNMP messages can be
                           sent or with which operations are being processed;
                           in particular, one of:

                             noAuthNoPriv - without authentication and
                                            without privacy,
                             authNoPriv   - with authentication but
                                            without privacy,
                             authPriv     - with authentication and
                                            with privacy.

                           These three values are ordered such that
                           noAuthNoPriv is less than authNoPriv and
                           authNoPriv is less than authPriv.
                          "
              SYNTAX       INTEGER { noAuthNoPriv(1),
                                     authNoPriv(2),
                                     authPriv(3erl)
                                   }

          SnmpAdminString ::= TEXTUAL-CONVENTION
              DISPLAY-HINT "255a"
              STATUS       current
              DESCRIPTION "An octet string containing administrative
                           information, preferably in human-readable form.

                           To facilitate internationalization, this
                           information is represented using the ISO/IEC
                           IS 10646-1 character set, encoded as an octet
                           string using the UTF-8 transformation format
                           described in [RFC2279].

                           Since additional code points are added by
                           amendments to the 10646 standard from time
                           to time, implementations must be prepared to
                           encounter any code point from 0x00000000 to
                           0x7fffffff.  Byte sequences that do not
                           correspond to the valid UTF-8 encoding of a
                           code point or are outside this range are
                           prohibited.

                           The use of control codes should be avoided.

                           When it is necessary to represent a newline,
                           the control code sequence CR LF should be used.

                           The use of leading or trailing white space should
                           be avoided.

                           For code points not directly supported by user
                           interface hardware or software, an alternative
                           means of entry and display, such as hexadecimal,
                           may be provided.

                           For information encoded in 7-bit US-ASCII,
                           the UTF-8 encoding is identical to the
                           US-ASCII encoding.

                           UTF-8 may require multiple bytes to represent a
                           single character / code point; thus the length
                           of this object in octets may be different from
                           the number of characters encoded.  Similarly,
                           size constraints refer to the number of encoded
                           octets, not the number of characters represented
                           by an encoding.

                           Note that when this TC is used for an object that
                           is used or envisioned to be used as an index, then
                           a SIZE restriction MUST be specified so that the
                           number of sub-identifiers for any object instance
                           does not exceed the limit of 128, as defined by
                           [RFC1905].

                           Note that the size of an SnmpAdminString object is
                           measured in octets, not characters.
                          "
              SYNTAX       OCTET STRING (SIZE (0..255))

          -- Administrative assignments ***************************************

          snmpFrameworkAdmin
              OBJECT IDENTIFIER ::= { snmpFrameworkMIB 1 }
          snmpFrameworkMIBObjects
              OBJECT IDENTIFIER ::= { snmpFrameworkMIB 2 }
          snmpFrameworkMIBConformance
              OBJECT IDENTIFIER ::= { snmpFrameworkMIB 3 }

          -- the snmpEngine Group ********************************************

          snmpEngine OBJECT IDENTIFIER ::= { snmpFrameworkMIBObjects 1 }

          snmpEngineID     OBJECT-TYPE
              SYNTAX       SnmpEngineID
              MAX-ACCESS   read-only
              STATUS       current
              DESCRIPTION "An SNMP engine's administratively-unique identifier.
                          "
              ::= { snmpEngine 1 }

          snmpEngineBoots  OBJECT-TYPE
              SYNTAX       INTEGER (1..2147483647)
              MAX-ACCESS   read-only
              STATUS       current
              DESCRIPTION "The number of times that the SNMP engine has
                           (re-)initialized itself since snmpEngineID
                           was last configured.
                          "
              ::= { snmpEngine 2 }

          snmpEngineTime   OBJECT-TYPE
              SYNTAX       INTEGER (0..2147483647)
              UNITS        "seconds"
              MAX-ACCESS   read-only
              STATUS       current
              DESCRIPTION "The number of seconds since the value of
                           the snmpEngineBoots object last changed.
                           When incrementing this object's value would
                           cause it to exceed its maximum,
                           snmpEngineBoots is incremented as if a
                           re-initialization had occurred, and this
                           object's value consequently reverts to zero.
                          "
              ::= { snmpEngine 3 }

          snmpEngineMaxMessageSize OBJECT-TYPE
              SYNTAX       INTEGER (484..2147483647)
              MAX-ACCESS   read-only
              STATUS       current
              DESCRIPTION "The maximum length in octets of an SNMP message
                           which this SNMP engine can send or receive and
                           process, determined as the minimum of the maximum
                           message size values supported among all of the
                           transports available to and supported by the engine.
                          "
              ::= { snmpEngine 4 }

          -- Registration Points for Authentication and Privacy Protocols **

          snmpAuthProtocols OBJECT-IDENTITY
              STATUS        current
              DESCRIPTION  "Registration point for standards-track
                            authentication protocols used in SNMP Management
                            Frameworks.
                           "
              ::= { snmpFrameworkAdmin 1 }

          snmpPrivProtocols OBJECT-IDENTITY
              STATUS        current
              DESCRIPTION  "Registration point for standards-track privacy
                            protocols used in SNMP Management Frameworks.
                           "
              ::= { snmpFrameworkAdmin 2 }

          -- Conformance information ******************************************

          snmpFrameworkMIBCompliances
                         OBJECT IDENTIFIER ::= {snmpFrameworkMIBConformance 1}
          snmpFrameworkMIBGroups
                         OBJECT IDENTIFIER ::= {snmpFrameworkMIBConformance 2}

          -- compliance statements

          snmpFrameworkMIBCompliance MODULE-COMPLIANCE
              STATUS       current
              DESCRIPTION "The compliance statement for SNMP engines which
                           implement the SNMP Management Framework MIB.
                          "
              MODULE    -- this module
                  MANDATORY-GROUPS { snmpEngineGroup }

              ::= { snmpFrameworkMIBCompliances 1 }

          -- units of conformance

          snmpEngineGroup OBJECT-GROUP
              OBJECTS {
                        snmpEngineID,
                        snmpEngineBoots,
                        snmpEngineTime,
                        snmpEngineMaxMessageSize
                      }
              STATUS       current
              DESCRIPTION "A collection of objects for identifying and
                           determining the configuration and current timeliness
                           values of an SNMP engine.
                          "
              ::= { snmpFrameworkMIBGroups 1 }

          END

Erlang/OTP                           SNMP                SNMP-FRAMEWORK-MIB(7)

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