RFCs in HTML Format


RFC 1665

                     Definitions of Managed Objects
                        for SNA NAUs using SMIv2
Table of Contents

   1. Introduction ................................................    2
   2. The SNMPv2 Network Management Framework .....................    2
   2.1 Object Definitions .........................................    2
   3. Overview ....................................................    3
   3.1 Applying MIB II to managing SNA NAUs .......................    4
   3.2 SNANAU MIB Structure .......................................    4
   3.2.1 snaNode group ............................................    5
   3.2.2 snaLu group ..............................................    6
   3.2.3 snaMgtTools group ........................................    7
   3.2.4 Conformance statement ....................................    7
   3.3 SNANAU MIB special feature .................................    7
   3.3.1 Row Creation mechanism ...................................    8
   3.3.2 State Diagrams ...........................................    8
   4. Object Definitions ..........................................    9
   5. Acknowledgments .............................................   66
   6. References ..................................................   66
   7. Security Considerations .....................................   67
   8. Authors' Addresses ..........................................   67










Kielczewski, Kostick & Shih                                     [Page 1]

RFC 1665 SNANAU MIB July 1994 1. Introduction This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it defines objects for managing the configuration, monitoring and control of Physical Units (PUs) and Logical Units (LUs) in an SNA environment. PUs and LUs are two types of Network Addressable Units (NAUs) in the logical structure of an SNA network. NAUs are the origination or destination points for SNA data streams. This memo identifies managed objects for PU Type 1.0, 2.0 and Type 2.1 and LU Type 0, 1, 2, 3, 4, 7. The generic objects defined here can also be used to manage LU 6.2 and any LU-LU session. The SNA terms and overall architecture are documented in [1]. 2. The SNMPv2 Network Management Framework The SNMPv2 Network Management Framework consists of four major components. They are: o RFC 1442 [2] which defines the SMI, the mechanisms used for describing and naming objects for the purpose of management. o STD 17, RFC 1213 [3] defines MIB-II, the core set of managed objects for the Internet suite of protocols. o RFC 1445 [4] which defines the administrative and other architectural aspects of the framework. o RFC 1448 [5] which defines the protocol used for network access to managed objects. The Framework permits new objects to be defined for the purpose of experimentation and evaluation. 2.1. Object Definitions Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the subset of Abstract Syntax Notation One (ASN.1) defined in the SMI (RFC 1442 [2]). In particular, each object type is named by an OBJECT IDENTIFIER, an administratively assigned name. The object type together with an object instance serves to uniquely identify a specific instantiation of the object. For human convenience, we often use a textual string, termed the descriptor, to refer to the object type. Kielczewski, Kostick & Shih [Page 2]
RFC 1665 SNANAU MIB July 1994 3. Overview This document identifies the proposed set of objects for managing the configuration, monitoring and control of Physical Units (PUs) and Logical Units (LUs) in an SNA environment. In this document, the name "Node" is used to describe SNA Node Type 1.0, 2.0 and Type 2.1 and the name "LU" is used to describe Logical Unit of Type 0, 1, 2, 3, 4, 7 and 6.2. Note however that only objects common to all PU and LU types are covered here and LU 6.2 specific objects are not included in this MIB module. Highlights of the management functions supported by the SNANAU MIB module include the following: o Creation/deletion of Nodes and LUs via the RowStatus objects in the snaNodeAdminTable and in the snaLuAdminTable. o Creation/deletion of table entries associating Node instances with link instances via the RowStatus object in the snaNodeLinkAdminTable o Activation/Deactivation of Nodes via the AdminState object in the snaNodeAdminTable o Deactivation of sessions via the AdminState object in the snaLuSessnTable o Monitoring and modification of parameters related to Nodes, LUs, and Node/link associations o Monitoring of session operational parameters o PU2.0 operational statistics o Session operational statistics o RTM statistics o Traps for: + Node state change + Node activation failure + LU state change + LU session BIND failure Kielczewski, Kostick & Shih [Page 3]
RFC 1665 SNANAU MIB July 1994 This MIB module does not support: o creation of links - the SNA DLC MIB [6] supports management capabilities for links, o activation or deactivation of LUs, nor o activation of sessions. 3.1. Applying MIB II to managing SNA NAUs This section identifies how MIB II objects, specifically the MIB II system group will be used in SNMP-based management of SNA NAUs. The MIB II system group applies to the SNMP Agent. The following object is from the MIB II system group: sysUpTime: clock in the SNMP Agent/proxy-Agent; expressed in TimeTicks (1/100s of a seconds). This MIB module uses the TimeStamp TEXTUAL-CONVENTION which is defined in the SNMPv2 Textual Conventions (RFC 1443 [7]) as "the value of MIB II's sysUpTime object when a specific occurrence happens." The specific occurrences related to SNA NAU management are defined in this MIB module. 3.2. SNANAU MIB Structure The SNANAU MIB module contains three groups of objects: o snaNode - objects related to Node configuration, monitoring and control. o snaLu - objects related to LU definition, monitoring and control. o snaMgtTools - objects related to specific management tools well known in SNA environment. These groups are described below in more detail. The objects related to PUs and LUs are organized into two types of tables: the Admin and Oper tables. The "Admin" table contains parameters which are used by a Management Station to affect the operation of the SNA service. Some parameters are used to initialize and configure the SNA service at the next startup, while others can take effect immediately. A Management Station can dynamically define SNA resources (PUs, LUs) by creating Kielczewski, Kostick & Shih [Page 4]
RFC 1665 SNANAU MIB July 1994 new entries in the Admin table. It uses a special object, AdminState, to control the desired state of a defined PU or LU Session resource. Note that this MIB does not allow the manipulation of an LU's operational state. The "Oper" table is an extension (augment) of the corresponding Admin table. It contains objects which correspond to the values of parameters currently used by the SNA system. 3.2.1. snaNode group The snaNode group consists of the following tables: 1) snaNodeAdminTable This table contains objects which describe the configuration parameters of an SNA Node. Link-specific configuration objects are contained in a separate MIB module (e.g., the SNA DLC MIB module) corresponding to link type. Entries in this table can be created, modified and deleted by either an Agent or a Management Station. The snaNodeAdminRowStatus object describes the status of an entry and is used to change the status of that entry. The snaNodeAdminState object describes the desired operational state of a Node and is used to change the operational state of a Node. How an Agent or a Management Station obtains the initial value of each object at creation time is an implementation specific issue not addressed in this memo. For each entry in the snaNodeAdminTable, there is a corresponding entry in the snaNodeOperTable. While the objects in this table describe the desired or configured operational values of the SNA Node, the actual runtime values are contained in snaNodeOperTable. 2) snaNodeOperTable - Each row contains runtime and operational state variables for a Node. It is an extension of snaNodeAdminTable and as such uses the same index. The rows in this table are created by an Agent as soon as the entry in the Admin Table become 'active'. The entries in this table cannot be modified by a Management Station. 3) snaPu20StatsTable - Each row contains statistics variables (counters) for a PU 2.0. The entries in this table are indexed by snaNodeAdminIndex. The rows in this table are created by an Agent as soon as the corresponding entry in the snaNodeAdminTable becomes 'active'. Kielczewski, Kostick & Shih [Page 5]
RFC 1665 SNANAU MIB July 1994 4) snaNodeLinkAdminTable - This table contains all references to link- specific tables. If a Node is configured with multiple links, then it will have multiple entries in this table. The entries in this table can be generated initially, after startup of SNA service, by the Agent which uses information from Node configuration file. Subsequent modifications of parameters, creation of new Node link entries and deletion of entries is possible. The modifications to this table can be saved in the Node configuration file for the next startup (i.e., restart or next initialization) of SNA service, but the mechanism for this function is not defined in this memo. Each entry contains the configuration information that associates a Node instance to one link instance. The entries are indexed by snaNodeAdminIndex and snaNodeLinkAdminIndex. 5) snaNodeLinkOperTable - This table contains all references to link- specific tables for operational parameters. If the Node is configured for multiple links, then it will have multiple entries in this table. This table augments the snaNodeLinkAdminTable. 6) snaNodeTraps - Two traps are defined for Nodes. The snaNodeStateChangeTrap indicates that the operational state of a Node has changed. The snaNodeActFailTrap indicates the failure of ACTPU received from host. 3.2.2. snaLu group The snaLu group consists of the following tables: 1) snaLuAdminTable - Table containing LU configuration information. The rows in this table can be created and deleted by a Management Station. Only objects which are common to all types of LUs are included in this table. The entries are indexed by Node and LU indices. 2) snaLuOperTable - Table containing dynamic runtime information and control variables relating to LUs. Only objects which are common to all types of LUs are included in this table. This table augments the snaLuAdminTable. 3) snaLuSessnTable - This is a table containing objects which describe the operational state of LU-LU sessions. Only objects which are common to all types of LU-LU sessions are included in this table. When a session enters the state 'pending-bind (2)', the corresponding entry in the session table is created by the Agent. When the session state becomes 'unbound (1)', then the session will be removed from the session table by the Agent. Entries are indexed by Node, Link, LU and session indices. Kielczewski, Kostick & Shih [Page 6]
RFC 1665 SNANAU MIB July 1994 4) snaLuSessnStatsTable - Table containing dynamic statistics information relating to LU-LU sessions. The entries in this table augment the entries in the snaLuSessnTable and cannot be created by a Management Station. 5) snaLuTraps - Two traps are defined for LUs. The snaLuStateChangeTrap indicates that the operational state of an LU has changed. The snaLuSessnBindFailTrap indicates the failure of a BIND request. 3.2.3. snaMgtTools group This is an optional group. The snaMgtTools group consists of the following table: 1) snaLuRtmTable Each row contains Response Time Monitor (RTM) variables for an LU. The table is indexed by Node and LU indices. Entries correspond to LU 2 entries in the snaLuAdminTable. A Management Station can read collection of RTM statistics for a given LU. 3.2.4. Conformance statement Compliance of the SNMPv2 management entity to the SNANAU MIB is defined in terms of following conformance units called groups. Unconditionally mandatory groups: snaNodeGroup, snaLuGroup, snaSessionGroup. Conditionally mandatory groups: snaPu20Group - mandatory only for those entities which implement PU type 2.0. The snaMgtToolsRtmGroup - mandatory only for those entities which implement LU type 2 and RTM. Refinement of requirements for objects access: an Agent which does not implement row creation for snaNodeAdminTable snaNodeLinkAdminTable and snaLuAdminTable must at least support object modification requests (i.e., read-write access instead of read-create). 3.3. SNANAU MIB special feature This section describes the mechanism used for row creation in the Admin tables and also presents critical state transitions for PUs, LUs and Sessions. Kielczewski, Kostick & Shih [Page 7]
RFC 1665 SNANAU MIB July 1994 3.3.1. Row Creation mechanism The row creation mechanism for the Admin tables in this MIB module is based on the use of the RowStatus object. Restriction of some operations for specific tables are described in each table. In particular, before accepting the 'destroy' value for an entry, an Agent has to verify the operational state of the corresponding entry in the Oper table. 3.3.2. State Diagrams The following state diagram models the state transitions for Nodes. When a row is created by a Management Station, an Agent creates the Oper table entry for that Node with the OperState equal to 'inactive'. An Agent cannot accept any operations for that Node until the RowStatus is set to 'active'. OperState -> inactive active waiting stopping --------------I--------------I--------------I-------------I--------- AdminState: I I I I active I active I active I waiting I no I I I I inactive I inactive I stopping I inactive I stopping I or inactive I The following state diagram models state transitions for Sessions. When a session goes to the 'unbound' state [1], the corresponding entry will be removed from the Session table by the Agent. OperState -> unbound pending-bind bound pending-unbind --------------I--------------I--------------I---------I-------------- AdminState: I I I I bound I no I no I no I no I I I I unbound I unbound I unbound I unbound I unbound Kielczewski, Kostick & Shih [Page 8]
RFC 1665 SNANAU MIB July 1994 4. Object Definitions SNA-NAU-MIB DEFINITIONS ::= BEGIN -- This MIB module contains objects necessary -- for management of the following SNA devices: PU types 1.0, 2.0, 2.1 -- and LU types 0, 1, 2, 3, 4, 7. It also contains generic objects -- which can be used to manage LU 6.2. -- Naming conventions in this document: -- The following names are used in object descriptors according to -- SNA conventions. -- The name 'PU' or 'Node' is used to describe Node type 1.0, 2.0 or -- 2.1. -- The name 'LU' is used to describe Logical Unit of type 0,1,2,3, -- 4,7 or 6.2. IMPORTS DisplayString, RowStatus, TimeStamp, InstancePointer FROM SNMPv2-TC Counter32, Gauge32, Integer32, OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE FROM SNMPv2-SMI MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF; snanauMIB MODULE-IDENTITY LAST-UPDATED "9402041800Z" ORGANIZATION "IETF SNA NAU MIB Working Group" CONTACT-INFO " Zbigniew Kielczewski Eicon Technology Inc. 2196 32nd Avenue Lachine, Que H8T 3H7 Canada Tel: 1 514 631 2592 E-mail: zbig@eicon.qc.ca Deirdre Kostick Bell Communications Research Red Bank, NJ 07701 Tel: 1 908 758 2642 Kielczewski, Kostick & Shih [Page 9]
RFC 1665 SNANAU MIB July 1994 E-mail: dck2@mail.bellcore.com Kitty Shih (editor) Novell 890 Ross Drive Sunnyvale, CA 94089 Tel: 1 408 747 4305 E-mail: kmshih@novell.com" DESCRIPTION "This is the MIB module for objects used to manage SNA devices." ::= { mib-2 34 } -- The SNANAU MIB module contains an objects part and a conformance part. -- Objects are organized into the following groups: -- (1)snaNode group, -- (2)snaLU group, -- (3)snaMgtTools group. snanauObjects OBJECT IDENTIFIER ::= { snanauMIB 1 } snaNode OBJECT IDENTIFIER ::= { snanauObjects 1 } snaLu OBJECT IDENTIFIER ::= { snanauObjects 2 } snaMgtTools OBJECT IDENTIFIER ::= { snanauObjects 3} -- *************************************************************** -- snaNode group -- -- It contains Managed Objects related to any type of Node and -- some specific objects for Node Type 2.0. -- *************************************************************** -- *************************************************************** -- The following table contains generic Node configuration -- parameters. -- *************************************************************** snaNodeAdminTable OBJECT-TYPE SYNTAX SEQUENCE OF SnaNodeAdminEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains objects which describe the configuration parameters for an SNA Node. Link specific configuration objects are contained in a separate MIB module (e.g., SNA DLC MIB) Kielczewski, Kostick & Shih [Page 10]
RFC 1665 SNANAU MIB July 1994 corresponding to the link type. The table snaNodeAdminLinkTable contains objects which identify the relationship between node instances and link instances. The entries (i.e., rows) in this table can be created by either an Agent or a Management Station. The Management Station can do this through setting the appropriate value in the snaNodeAdminRowStatus. The snaNodeAdminRowStatus object describes the status of an entry and is used to change the status of an entry. The entry is deleted by an Agent based on the value of the snaNodeAdminRowStatus. The snaNodeAdminState object describes the desired operational state of a Node and is used to change the operational state of a Node. For example, such information may be obtained from a configuration file. How an Agent or a Management Station obtains the initial value of each object at creation time is an implementation specific issue. For each entry in this table, there is a corresponding entry in the snaNodeOperTable. While the objects in this table describe the desired or configured operational values of the SNA Node, the actual runtime values are contained in snaNodeOperTable." ::= { snaNode 1 } snaNodeAdminEntry OBJECT-TYPE SYNTAX SnaNodeAdminEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An entry contains the configuration parameters for one SNA Node instance. The objects in the entry have read-create access. An entry can be created, modified or deleted. The object snaNodeAdminRowStatus is used (i.e., set) to create or delete a row entry." INDEX { snaNodeAdminIndex } ::= { snaNodeAdminTable 1 } SnaNodeAdminEntry ::= SEQUENCE { snaNodeAdminIndex Kielczewski, Kostick & Shih [Page 11]
RFC 1665 SNANAU MIB July 1994 Integer32, snaNodeAdminName DisplayString, snaNodeAdminType INTEGER, snaNodeAdminXidFormat INTEGER, snaNodeAdminBlockNum DisplayString, snaNodeAdminIdNum DisplayString, snaNodeAdminEnablingMethod INTEGER, snaNodeAdminLuTermDefault INTEGER, snaNodeAdminMaxLu Integer32, snaNodeAdminHostDescription DisplayString, snaNodeAdminStopMethod INTEGER, snaNodeAdminState INTEGER, snaNodeAdminRowStatus RowStatus } snaNodeAdminIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "Index used to uniquely identify each Node instance. If an Agent creates the entry, then it will assign this number otherwise a Management Station generates a random number when it reserves the entry for creation." ::= { snaNodeAdminEntry 1 } snaNodeAdminName OBJECT-TYPE SYNTAX DisplayString (SIZE(0..17)) MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the desired name of the Node for use during Node activation. In Type 2.1 networks, this is a fully-qualified name, meaning that the Node name is preceded by the NetId (if Kielczewski, Kostick & Shih [Page 12]
RFC 1665 SNANAU MIB July 1994 present) with a period as the delimiter. A write operation to this object will not change the operational value reflected in snaNodeOperName until the Node has been re-activated (e.g., after the next initialization of the SNA services)." ::= { snaNodeAdminEntry 2 } snaNodeAdminType OBJECT-TYPE SYNTAX INTEGER { other(1), pu10(2), pu20(3), t21len(4), endNode(5), networkNode(6) } MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the type of SNA Node. A write operation to this object will not change the operational value reflected in snaNodeOperType until the Node has been re-activated (e.g., after the next initialization of the SNA services)." ::= { snaNodeAdminEntry 3 } snaNodeAdminXidFormat OBJECT-TYPE SYNTAX INTEGER { format0(1), format1(2), format3(3) } MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the type of XID format used for this Node. Note that there is no format type 2. A write operation to this object will not change the operational value reflected in snaNodeOperAdminXidFormat until the Node has been re-activated (e.g., after the next initialization of the SNA services)." Kielczewski, Kostick & Shih [Page 13]
RFC 1665 SNANAU MIB July 1994 ::= { snaNodeAdminEntry 4 } snaNodeAdminBlockNum OBJECT-TYPE SYNTAX DisplayString (SIZE(3)) MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the block number for this Node instance. It is the first 3 hexadecimal digits of the SNA Node id. A write operation to this object will not change the operational value reflected in snaNodeOperBlockNum until the Node has been re-activated (e.g., after the next initialization of the SNA services)." ::= { snaNodeAdminEntry 5 } snaNodeAdminIdNum OBJECT-TYPE SYNTAX DisplayString (SIZE(5)) MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the ID number for this Node instance. This is the last 5 hexadecimal digits of the SNA Node id. A write operation to this object will not change the operational value reflected in snaNodeOperIdNum until the Node has been re-activated (e.g., after the next initialization of the SNA services)." ::= { snaNodeAdminEntry 6 } snaNodeAdminEnablingMethod OBJECT-TYPE SYNTAX INTEGER { other (1), startup (2), demand (3), onlyMS (4) } MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates how the Node should be activated for the first time. The values have the following meanings: Kielczewski, Kostick & Shih [Page 14]
RFC 1665 SNANAU MIB July 1994 other (1) - may be used for proprietary methods not listed in this enumeration, startup (2) - at SNA services' initialization time (this is the default), demand (3) - only when LU is requested by application, or onlyMS (4) - by a Management Station only. A write operation to this object may immediately change the operational value reflected in snaNodeOperEnablingMethod depending on the Agent implementation. If the Agent implementation accepts immediate changes, then the behavior of the Node changes immediately and not only after the next system startup of the SNA services. An immediate change may only apply when the current value `demand (3)' is changed to `onlyMS (4)' and vice versa." ::= { snaNodeAdminEntry 7 } snaNodeAdminLuTermDefault OBJECT-TYPE SYNTAX INTEGER { unbind (1), termself (2), rshutd (3), poweroff(4) } MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the desired default method used to deactivate LUs for this Node For LU6.2s, `unbind(1)' is the only valid value. unbind(1) - terminate the LU-LU session by sending an SNA UNBIND request. termself(2) - terminate the LU-LU session by sending an SNA TERM-SELF (Terminate Self) request on the SSCP-LU session. The SSCP will inform the remote session LU partner to send an UNBIND request to terminate the session. rshutd(3) - terminate the LU-LU session by sending an SNA RSHUTD (Request ShutDown) request to the remote session LU partner. The remote LU will then send an UNBIND request to terminate the session. poweroff(4) - terminate the LU-LU session by sending either an SNA LUSTAT (LU Status) request on Kielczewski, Kostick & Shih [Page 15]
RFC 1665 SNANAU MIB July 1994 the LU-LU session or an SNA NOTIFY request on the SSCP-LU session indicating that the LU has been powered off. Sending both is also acceptable. The result should be that the remote session LU partner will send an UNBIND to terminate the session. The default behavior indicated by the value of this object may be overridden for an LU instance. The override is performed by setting the snaLuAdminTerm object instance in the snaLuAdminTable to the desired value. A write operation to this object may immediately change the operational value reflected in snaNodeOperLuTermDefault depending on the Agent implementation." ::= { snaNodeAdminEntry 8 } snaNodeAdminMaxLu OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-create STATUS current DESCRIPTION "The maximum number of LUs that may be activated for this Node. For PU2.1, this object refers to the number of dependent LUs. A write operation to this object will not change the operational value reflected in snaNodeOperMaxLu until the Node has been re-activated (e.g., after the next initialization of the SNA services)." ::= { snaNodeAdminEntry 9 } snaNodeAdminHostDescription OBJECT-TYPE SYNTAX DisplayString (SIZE(0..128)) MAX-ACCESS read-create STATUS current DESCRIPTION "The value identifies the remote host associated with this Node. Since SSCP Id's may not be unique across hosts, the host description is required to uniquely identify the SSCP. This object is only applicable to PU2.0 type Nodes. If the remote host is unknown, then the value is the null string. Kielczewski, Kostick & Shih [Page 16]
RFC 1665 SNANAU MIB July 1994 A write operation to this object may immediately change the operational value reflected in snaNodeOperHostDescription depending on the Agent implementation." ::= { snaNodeAdminEntry 10 } snaNodeAdminStopMethod OBJECT-TYPE SYNTAX INTEGER { other (1), normal (2), immed (3), force (4) } MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the desired method to be used by the Agent to stop a Node (i.e., change the Node's operational state to inactive(1) ). The values have the following meaning: other (1) - used for proprietary methods not listed in this enumeration. normal(2) - deactivate only when there is no more activity on this Node (i.e., all data flows have been completed and all sessions have been terminated). immed(3) - deactivate immediately regardless of current activities on this Node. Wait for deactivation responses (from remote Node) before changing the Node state to inactive. force(4) - deactivate immediately regardless of current activities on this Node. Do not wait for deactivation responses (from remote Node) before changing the Node state to inactive. A write operation to this object may immediately change the operational value reflected in snaNodeOperStopMethod depending on the Agent implementation." ::= { snaNodeAdminEntry 11 } snaNodeAdminState OBJECT-TYPE SYNTAX INTEGER { inactive (1), active (2) } Kielczewski, Kostick & Shih [Page 17]
RFC 1665 SNANAU MIB July 1994 MAX-ACCESS read-create STATUS current DESCRIPTION "The value indicates the desired operational state of the SNA Node. This object is used by the Management Station to activate or deactivate the Node. If the current value in snaNodeOperState is `active (2)', then setting this object to `inactive (1)' will initiate the Node shutdown process using the method indicated by snaNodeOperStopMethod. If the current value in snaNodeOperState is `inactive (1)', then setting this object to `active (2)' will initiate the Node's activation. A Management Station can always set this object to `active (2)' irrespective of the value in the snaOperEnablingMethod." ::= { snaNodeAdminEntry 12 } snaNodeAdminRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object is used by a Management Station to create or delete the row entry in the snaNodeAdminTable following the RowStatus textual convention. Upon successful creation of the row, an Agent automatically creates a corresponding entry in the snaNodeOperTable with snaNodeOperState equal to `inactive (1)'. Row deletion can be Management Station or Agent initiated: (a) The Management Station can set the value to `destroy (6)' only when the value of snaNodeOperState of this Node instance is `inactive (1)'. The Agent will then delete the rows corresponding to this Node instance from the snaNodeAdminTable and the snaNodeOperTable. (b) The Agent detects that a row is in the Kielczewski, Kostick & Shih [Page 18]
RFC 1665 SNANAU MIB July 1994 `notReady (3)' state for greater than a default period of 5 minutes. (c) All rows with the snaNodeAdminRowStatus object's value of `notReady (3)' will be removed upon the next initialization of the SNA services." ::= { snaNodeAdminEntry 13 } -- *************************************************************** -- The following object is updated when there is a change to -- the value of any object in the snaNodeAdminTable. -- *************************************************************** snaNodeAdminTableLastChange OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value indicates the timestamp (e.g., the Agent's sysUpTime value) of the last change made to any object in the snaNodeAdminTable, including row deletions/additions (e.g., changes to snaNodeAdminRowStatus values). This object can be used to reduce frequent retrievals of the snaNodeAdminTable by a Management Station. It is expected that a Management Station will periodically poll this object and compare its current value with the previous one. A difference indicates that some Node configuration information has been changed. Only then will the Management Station retrieve the entire table." ::= { snaNode 2 } -- *************************************************************** -- The following table contains Node operational parameters. -- *************************************************************** snaNodeOperTable OBJECT-TYPE SYNTAX SEQUENCE OF SnaNodeOperEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains the dynamic parameters which have read-only access. These objects reflect the actual status of the Node. The entries in this table cannot be created or modified by a Kielczewski, Kostick & Shih [Page 19]
RFC 1665 SNANAU MIB July 1994 Management Station. This table augments the snaNodeAdminTable." ::= { snaNode 3 } snaNodeOperEntry OBJECT-TYPE SYNTAX SnaNodeOperEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The entry contains parameters which describe the state of one Node. The entries are created by the Agent. They have read-only access." AUGMENTS { snaNodeAdminEntry } ::= { snaNodeOperTable 1 } SnaNodeOperEntry ::= SEQUENCE { snaNodeOperName DisplayString, snaNodeOperType INTEGER, snaNodeOperXidFormat INTEGER, snaNodeOperBlockNum DisplayString, snaNodeOperIdNum DisplayString, snaNodeOperEnablingMethod INTEGER, snaNodeOperLuTermDefault INTEGER, snaNodeOperMaxLu Integer32, snaNodeOperHostDescription DisplayString, snaNodeOperStopMethod INTEGER, snaNodeOperState INTEGER, snaNodeOperHostSscpId OCTET STRING, snaNodeOperStartTime TimeStamp, snaNodeOperLastStateChange TimeStamp, snaNodeOperActFailures Counter32, snaNodeOperActFailureReason INTEGER Kielczewski, Kostick & Shih [Page 20]
RFC 1665 SNANAU MIB July 1994
RFC 1665 SNANAU MIB July 1994 STATUS current DESCRIPTION "The number of bytes sent by the local LU." ::= { snaLuSessnStatsEntry 1 } snaLuSessnStatsReceivedBytes OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of bytes received by the local LU." ::= { snaLuSessnStatsEntry 2 } snaLuSessnStatsSentRus OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RUs sent by the local LU." ::= { snaLuSessnStatsEntry 3 } snaLuSessnStatsReceivedRus OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of RUs received by the local LU." ::= { snaLuSessnStatsEntry 4 } snaLuSessnStatsSentNegativeResps OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of negative responses sent by the local LU." ::= { snaLuSessnStatsEntry 5 } snaLuSessnStatsReceivedNegativeResps OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of negative responses received by the local LU." ::= { snaLuSessnStatsEntry 6 } Kielczewski, Kostick & Shih [Page 52]
RFC 1665 SNANAU MIB July 1994 -- *************************************************************** -- Traps -- *************************************************************** snaLuTraps OBJECT IDENTIFIER ::= { snaLu 5 } snaLuStateChangeTrap NOTIFICATION-TYPE OBJECTS { snaLuOperName, snaLuOperSnaName, snaLuOperState } STATUS current DESCRIPTION "This trap indicates that the operational state (i.e., snaLuOperState value) of the LU has changed. The value of snaLuOperName indicates the name of the LU. The value of snaLuOperSnaName indicates the SNA name of LU. The value of snaLuOperState indicates the current state after change." ::= { snaLuTraps 1 } snaLuSessnBindFailTrap NOTIFICATION-TYPE OBJECTS { snaLuSessnLocalApplName, snaLuSessnRemoteLuName, snaLuSessnOperState, snaLuSessnSenseData } STATUS current DESCRIPTION "This trap indicates the failure of a BIND. The value of snaLuSessnLocalApplName indicates the local application name. The value of snaLuSessnPartnerName indicates the partner name. The value of snaLuSessnOperState indicates the current state after change. The value of snaLuSessnBindFailureReason indicates the failure reason. The Agent should not generate more than 1 trap of this type per minute to minimize the level of management traffic on the network." ::= { snaLuTraps 2 } -- *************************************************************** -- snaMgtTools group -- -- Currently this group contains only one table. -- *************************************************************** Kielczewski, Kostick & Shih [Page 53]
RFC 1665 SNANAU MIB July 1994 -- *************************************************************** -- The following table contains Response Time Monitoring (RTM) -- configuration information and statistics for LU Type 2s. -- RTM supports the capability to measure and report end-user -- response times for dependent LUs. When the RTM state of an LU -- is 'on', response times for each LU transaction are monitored. -- A set of ranges is defined (e.g., Range 1 includes the number of -- transactions with response times less than 1 second) using the -- "boundary" definitions (e.g., boundary #2 is defined as 3 seconds). -- A set of counters (one per range) identifies -- the number of transactions within each response time range. -- *************************************************************** snaLuRtmTable OBJECT-TYPE SYNTAX SEQUENCE OF SnaLuRtmEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "This table contains Response Time Monitoring (RTM) information relating to an LU (Type 2). Each entry corresponds to an LU 2 entry in snaLuAdminTable." ::= { snaMgtTools 1 } snaLuRtmEntry OBJECT-TYPE SYNTAX SnaLuRtmEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Contains RTM information for an LU (Type 2). Each entry is created by the Agent." INDEX { snaLuRtmPuIndex, snaLuRtmLuIndex } ::= { snaLuRtmTable 1 } SnaLuRtmEntry ::= SEQUENCE { snaLuRtmPuIndex Integer32, snaLuRtmLuIndex Integer32, snaLuRtmState INTEGER, snaLuRtmStateTime TimeStamp, snaLuRtmDef INTEGER, snaLuRtmBoundary1 Integer32, snaLuRtmBoundary2 Kielczewski, Kostick & Shih [Page 54]
RFC 1665 SNANAU MIB July 1994 Integer32, snaLuRtmBoundary3 Integer32, snaLuRtmBoundary4 Integer32, snaLuRtmCounter1 Counter32, snaLuRtmCounter2 Counter32, snaLuRtmCounter3 Counter32, snaLuRtmCounter4 Counter32, snaLuRtmOverFlows Counter32, snaLuRtmObjPercent Integer32, snaLuRtmObjRange INTEGER, snaLuRtmNumTrans Integer32, snaLuRtmLastRspTime Integer32, snaLuRtmAvgRspTime Integer32 } snaLuRtmPuIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value identifies the PU 2.0 with which this LU is associated." ::= { snaLuRtmEntry 1 } snaLuRtmLuIndex OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "The value uniquely identifies an LU in a PU 2.0." ::= { snaLuRtmEntry 2 } snaLuRtmState OBJECT-TYPE SYNTAX INTEGER { off(1), on(2) Kielczewski, Kostick & Shih [Page 55]
RFC 1665 SNANAU MIB July 1994 } MAX-ACCESS read-only STATUS current DESCRIPTION "The value indicates the current RTM state of an LU." ::= { snaLuRtmEntry 3 } snaLuRtmStateTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The timestamp (e.g., the Agent's sysUpTime value) when this session's RTM state (e.g., snaLuRtmState) changes value." ::= { snaLuRtmEntry 4 } snaLuRtmDef OBJECT-TYPE SYNTAX INTEGER { firstChar(1), kb(2), cdeb(3) } MAX-ACCESS read-only STATUS current DESCRIPTION "The value indicates the mode of measurement for this RTM request. The values have following meaning: firstChar(1) - time to first character on screen kb(2) - time to keyboard usable by operator cdeb(3) - time to Change Direction/End Bracket." ::= { snaLuRtmEntry 5 } snaLuRtmBoundary1 OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains the value of the first boundary in units of 1/10th of a second." ::= { snaLuRtmEntry 6 } snaLuRtmBoundary2 OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains the value of the second boundary Kielczewski, Kostick & Shih [Page 56]
RFC 1665 SNANAU MIB July 1994 in units of 1/10th of a second." ::= { snaLuRtmEntry 7 } snaLuRtmBoundary3 OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains the value of the third boundary in units of 1/10th of a second." ::= { snaLuRtmEntry 8 } snaLuRtmBoundary4 OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This object contains the value of the fourth boundary in units of 1/10th of a second." ::= { snaLuRtmEntry 9 } snaLuRtmCounter1 OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the number of transactions which fall in the range specified by the first boundary." ::= { snaLuRtmEntry 10 } snaLuRtmCounter2 OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the number of transactions which fall in the range specified by the second boundary." ::= { snaLuRtmEntry 11 } snaLuRtmCounter3 OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the number of transactions which fall in the range specified by the third boundary." ::= { snaLuRtmEntry 12 } Kielczewski, Kostick & Shih [Page 57]
RFC 1665 SNANAU MIB July 1994 snaLuRtmCounter4 OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the number of transactions which fall in the range specified by the fourth boundary." ::= { snaLuRtmEntry 13 } snaLuRtmOverFlows OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the number of transactions which exceed the highest range specified by the boundaries." ::= { snaLuRtmEntry 14 } snaLuRtmObjPercent OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the desired percentage of transactions which should be under a designated boundary range indicated by snaLuRtmObjRange." ::= { snaLuRtmEntry 15 } snaLuRtmObjRange OBJECT-TYPE SYNTAX INTEGER { other(1), range1(2), range2(3), range3(4), range4(5), range5(6) } MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the designated boundary range to which the snaLuRtmObject refers. The values have the following meanings: other(1) - not specified range1(2) - less than boundary 1 range2(3) - between boundary 1 and 2 range3(4) - between boundary 2 and 3 Kielczewski, Kostick & Shih [Page 58]
RFC 1665 SNANAU MIB July 1994 range4(5) - between boundary 3 and 4 range5(6) - greater than boundary 4." ::= { snaLuRtmEntry 16 } snaLuRtmNumTrans OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the total number of transactions executed since the RTM monitoring began (i.e., snaLuRtmState changed to `on(2)') for this LU." ::= { snaLuRtmEntry 17 } snaLuRtmLastRspTime OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the response time for the last transaction in units of 1/10th of a second." ::= { snaLuRtmEntry 18 } snaLuRtmAvgRspTime OBJECT-TYPE SYNTAX Integer32 MAX-ACCESS read-only STATUS current DESCRIPTION "This value indicates the average response time for all transactions in units of 1/10th of a second." ::= { snaLuRtmEntry 19 } -- *************************************************************** -- Conformance information -- *************************************************************** snanauConformance OBJECT IDENTIFIER ::= { snanauMIB 2 } snanauCompliances OBJECT IDENTIFIER ::= {snanauConformance 1 } snanauGroups OBJECT IDENTIFIER ::= {snanauConformance 2 } -- Compliance statements snanauCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION Kielczewski, Kostick & Shih [Page 59]
RFC 1665 SNANAU MIB July 1994 "The compliance statement for the SNMPv2 entities which implement the snanau MIB." MODULE -- this module -- Unconditionally mandatory groups MANDATORY-GROUPS { snaNodeGroup, snaLuGroup, snaSessionGroup } -- Conditionally mandatory groups GROUP snaPu20Group DESCRIPTION "The snaPu20Group is mandatory only for those entities which implement PU type 2.0" GROUP snaMgtToolsRtmGroup DESCRIPTION "The snaMgtToolsGroup is mandatory only for those entities which implement LU type 2 and RTM." -- Refinement of requirements for objects access. -- The Agent which does not implement row creation for -- snaNodeAdminTable, snaNodeLinkAdminTable and -- snaLuAdminTable must at least accept -- objects modification (read-write access instead of -- read-create). OBJECT snaNodeAdminName MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminType MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminXidFormat MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminBlockNum Kielczewski, Kostick & Shih [Page 60]
RFC 1665 SNANAU MIB July 1994 MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminIdNum MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminEnablingMethod MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminLuTermDefault MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminMaxLu MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminHostDescription MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminStopMethod MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeAdminState MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeLinkAdminSpecific Kielczewski, Kostick & Shih [Page 61]
RFC 1665 SNANAU MIB July 1994 MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaNodeLinkAdminMaxPiu MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminName MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminSnaName MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminType MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminDepType MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminLocalAddress MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminDisplayModel MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." OBJECT snaLuAdminTerm Kielczewski, Kostick & Shih [Page 62]
RFC 1665 SNANAU MIB July 1994 MIN-ACCESS read-write DESCRIPTION "An Agent is required to implement read-write access to this object." ::= {snanauCompliances 1 } -- Units of conformance snaNodeGroup OBJECT-GROUP OBJECTS {snaNodeAdminIndex, snaNodeAdminName, snaNodeAdminType, snaNodeAdminXidFormat, snaNodeAdminBlockNum, snaNodeAdminIdNum, snaNodeAdminEnablingMethod, snaNodeAdminLuTermDefault, snaNodeAdminMaxLu, snaNodeAdminHostDescription, snaNodeAdminStopMethod, snaNodeAdminState, snaNodeAdminRowStatus, snaNodeAdminTableLastChange, snaNodeOperName, snaNodeOperType, snaNodeOperXidFormat, snaNodeOperBlockNum, snaNodeOperIdNum, snaNodeOperEnablingMethod, snaNodeOperLuTermDefault, snaNodeOperMaxLu, snaNodeOperHostDescription, snaNodeOperStopMethod, snaNodeOperState, snaNodeOperHostSscpId, snaNodeOperStartTime, snaNodeOperLastStateChange, snaNodeOperActFailures, snaNodeOperActFailureReason, snaNodeOperTableLastChange, snaNodeLinkAdminIndex, snaNodeLinkAdminSpecific, snaNodeLinkAdminMaxPiu, snaNodeLinkAdminRowStatus, snaNodeLinkAdminTableLastChange, snaNodeLinkOperSpecific, Kielczewski, Kostick & Shih [Page 63]
RFC 1665 SNANAU MIB July 1994 snaNodeLinkOperMaxPiu, snaNodeLinkOperTableLastChange } STATUS current DESCRIPTION "A collection of objects providing the instrumentation of SNA nodes." ::= { snanauGroups 1 } snaLuGroup OBJECT-GROUP OBJECTS { snaLuAdminLuIndex, snaLuAdminName, snaLuAdminSnaName, snaLuAdminType, snaLuAdminDepType, snaLuAdminLocalAddress, snaLuAdminDisplayModel, snaLuAdminTerm, snaLuAdminRowStatus, snaLuOperName, snaLuOperSnaName, snaLuOperType, snaLuOperDepType, snaLuOperLocalAddress, snaLuOperDisplayModel, snaLuOperTerm, snaLuOperState, snaLuOperSessnCount } STATUS current DESCRIPTION "A collection of objects providing the instrumentation of SNA LUs." ::= { snanauGroups 2 } snaSessionGroup OBJECT-GROUP OBJECTS { snaLuSessnIndex, snaLuSessnLocalApplName, snaLuSessnRemoteLuName, snaLuSessnMaxSndRuSize, snaLuSessnMaxRcvRuSize, snaLuSessnSndPacingSize, snaLuSessnRcvPacingSize, snaLuSessnActiveTime, snaLuSessnAdminState, snaLuSessnOperState, snaLuSessnSenseData, snaLuSessnTerminationRu, snaLuSessnUnbindType, snaLuSessnStatsSentBytes, Kielczewski, Kostick & Shih [Page 64]
RFC 1665 SNANAU MIB July 1994 snaLuSessnStatsReceivedBytes, snaLuSessnStatsSentRus, snaLuSessnStatsReceivedRus, snaLuSessnStatsSentNegativeResps, snaLuSessnStatsReceivedNegativeResps } STATUS current DESCRIPTION "A collection of objects providing the instrumentation of SNA sessions." ::= { snanauGroups 3 } snaPu20Group OBJECT-GROUP OBJECTS { snaPu20StatsSentBytes, snaPu20StatsReceivedBytes, snaPu20StatsSentPius, snaPu20StatsReceivedPius, snaPu20StatsSentNegativeResps, snaPu20StatsReceivedNegativeResps, snaPu20StatsActLus, snaPu20StatsInActLus, snaPu20StatsBindLus } STATUS current DESCRIPTION "A collection of objects providing the instrumentation of PU 2.0." ::= { snanauGroups 4 } snaMgtToolsRtmGroup OBJECT-GROUP OBJECTS { snaLuRtmPuIndex, snaLuRtmLuIndex, snaLuRtmState, snaLuRtmStateTime, snaLuRtmDef, snaLuRtmBoundary1, snaLuRtmBoundary2, snaLuRtmBoundary3, snaLuRtmBoundary4, snaLuRtmCounter1, snaLuRtmCounter2, snaLuRtmCounter3, snaLuRtmCounter4, snaLuRtmOverFlows, snaLuRtmObjPercent, snaLuRtmObjRange, snaLuRtmNumTrans, snaLuRtmLastRspTime, snaLuRtmAvgRspTime } STATUS current Kielczewski, Kostick & Shih [Page 65]
RFC 1665 SNANAU MIB July 1994 DESCRIPTION "A collection of objects providing the instrumentation of RTM for SNA LU 2.0." ::= { snanauGroups 5 } -- end of conformance statement END 5. Acknowledgments The following people greatly contributed to the work on this MIB document: Michael Allen, Robin Cheng, Bill Kwan. Special thanks goes to Dave Perkins for his assistance in reviewing this MIB proposal. 6. References [1] IBM, Systems Network Architecture Technical Overview, GC 30- 3073-3, March, 1991. [2] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure of Management Information for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1442, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993. [3] McCloghrie, K., and M. Rose, "Management Information Base for Network Management of TCP/IP-based internets - MIB-II", STD 17, RFC 1213, Hughes LAN Systems, Performance Systems International, March 1991. [4] Galvin, J., and K. McCloghrie, "Administrative Model for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1445, Trusted Information Systems, Hughes LAN Systems, April 1993. [5] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol Operations for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1448, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993. [6] Hilgeman, J., Nix, S., Bartky, A., Clark, W., "Definitions of Managed Objects for SNA Data Link Control: SDLC", Work in Progress. Kielczewski, Kostick & Shih [Page 66]
RFC 1665 SNANAU MIB July 1994 [7] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual Conventions for version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1443, SNMP Research, Inc., Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon University, April 1993.



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