INTERNET-DRAFT L. Heintz Cerent Corporation S. Gudur Independent Consultant M. Ellison, Ed. Ellison Software Consulting, Inc. 9 June 1999 Definitions of Managed Objects for Extensible SNMP Agents Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026 Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. Copyright Notice Copyright (C) The Internet Society (1999). All Rights Reserved. Abstract This memo defines an experimental portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects managing SNMP agents that use the Agent Extensibility (AgentX) Protocol. This memo specifies a MIB module in a manner that is both compliant to the SNMPv2 SMI, and semantically identical to the peer SNMPv1 definitions. AgentX Working Group Expires December 1999 [Page 1] Internet Draft AgentX MIB 9 June 1999 This memo does not specify a standard for the Internet community. Table of Contents 1. The SNMP Management Framework ............................... 3 2. Introduction ................................................ 3 3. AgentX MIB Overview ......................................... 4 4. Managed Object Definitions for AgentX ....................... 6 5. Intellectual Property ....................................... 18 6. Acknowledgements ............................................ 18 7. Security Considerations ..................................... 19 8. References .................................................. 21 9. Authors' and Editor's Addresses ............................. 23 10. Full Copyright Statement ................................... 23 AgentX Working Group Expires December 1999 [Page 2] Internet Draft AgentX MIB 9 June 1999 1. The SNMP Management Framework The SNMP Management Framework presently consists of five major components: - An overall architecture, described in RFC 2571 [1]. - Mechanisms for describing and naming objects and events for the purpose of management. The first version of this Structure of Management Information (SMI) is called SMIv1 and described in RFC 1155 [2], RFC 1212 [3] and RFC 1215 [4]. The second version, called SMIv2, is described in RFC 2578 [5], RFC 2579 [6] and RFC 2580 [7]. - Message protocols for transferring management information. The first version of the SNMP message protocol is called SNMPv1 and described in RFC 1157 [8]. A second version of the SNMP message protocol, which is not an Internet standards track protocol, is called SNMPv2c and described in RFC 1901 [9] and RFC 1906 [10]. The third version of the message protocol is called SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and RFC 2574 [12]. - Protocol operations for accessing management information. The first set of protocol operations and associated PDU formats is described in RFC 1157 [8]. A second set of protocol operations and associated PDU formats is described in RFC 1905 [13]. - A set of fundamental applications described in RFC 2573 [14] and the view-based access control mechanism described in RFC 2575 [15]. A more detailed introduction to the current SNMP Management Framework can be found in RFC 2570 [16]. Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. Objects in the MIB are defined using the mechanisms defined in the SMI. This memo specifies a MIB module that is compliant to the SMIv2. A MIB conforming to the SMIv1 can be produced through the appropriate translations. The resulting translated MIB must be semantically equivalent, except where objects or events are omitted because no translation is possible (use of Counter64). Some machine readable information in SMIv2 will be converted into textual descriptions in SMIv1 during the translation process. However, this loss of machine readable information is not considered to change the semantics of the MIB. AgentX Working Group Expires December 1999 [Page 3] Internet Draft AgentX MIB 9 June 1999 2. Introduction The SNMP Agent Extensibility Protocol (AgentX) is a protocol used to distribute the implementation of an SNMP agent amongst a single "master agent" and multiple "subagents". See [17] for details about the AgentX protocol. The goals of the AgentX MIB are: - List the set of subagents that currently have logical sessions open with the master agent. - Identify each subagent's type, vendor, transport address, AgentX protocol version, and other characteristics. - Identify the set of MIB objects each subagent implements, the context in which the objects are registered, and the priority of the registration. - Determine protocol operational parameters such as the timeout interval for responses from a subagent and the priority at which a subagent registers a particular MIB region. - Allow (but do not require) managers to be able to modify AgentX protocol operational parameters and to explicitly close subagent sessions with the master agent. 3. AgentX MIB Overview This MIB is organized into four groups. The agentxGeneral group provides information describing the master agent's AgentX support, including the protocol version supported. The agentxConnection group provides information describing the current set of connections capable of carrying AgentX sessions. The agentxSession group provides information describing the current set of AgentX sessions. The agentxRegistration group provides information describing the current set of registrations. Three tables form the heart of this mib. These are the connection, session, and registration tables. Entries in the registration table exist in a many-to-one relationship with entries in the session table. This relationship is expressed through the two common indices, agentxSessionIndex and agentxConnIndex. Entries in the registration table also exist in a many-to-one relationship with entries in the connection table. This relationship is expressed through the common index, agentxConnIndex. AgentX Working Group Expires December 1999 [Page 4] Internet Draft AgentX MIB 9 June 1999 Entries in the session table exist in a many-to-one relationship with entries in the connection table. This relationship is expressed through the common index, agentxConnIndex. AgentX Working Group Expires December 1999 [Page 5] Internet Draft AgentX MIB 9 June 1999 4. Managed Object Definitions for AgentX AGENTX-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Unsigned32, mib-2 FROM SNMPv2-SMI SnmpAdminString FROM SNMP-FRAMEWORK-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF TEXTUAL-CONVENTION, TimeStamp, TruthValue, TDomain FROM SNMPv2-TC; agentxMIB MODULE-IDENTITY LAST-UPDATED "9902081200Z" -- February 8, 1999 ORGANIZATION "AgentX Working Group" CONTACT-INFO "WG-email: agentx@peer.com Subscribe: agentx-request@peer.com http://www.ietf.org/html.charters/agentx-charter.html Chair: Bob Natale ACE*COMM Corporation Email: bnatale@acecomm.com WG editor: Mark Ellison Ellison Software Consulting, Inc. Email: ellison@world.std.com Co-author: Lauren Heintz Cerent Corporation, EMail: lauren.heintz@cerent.com Co-author: Smitha Gudur Independent Consultant Email: sgudur@hotmail.com " DESCRIPTION "This is the MIB module for the SNMP Agent Extensibility Protocol (AgentX). This MIB module will be implemented by the master agent. " ::= { mib-2 ? } -- To be assigned by IANA. AgentX Working Group Expires December 1999 [Page 6] Internet Draft AgentX MIB 9 June 1999 -- Textual Conventions AgentxTAddress ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Denotes a transport service address. This is identical to the TAddress textual convention (SNMPv2-SMI) except that zero-length values are permitted. " SYNTAX OCTET STRING (SIZE (0..255)) -- Administrative assignments agentxObjects OBJECT IDENTIFIER ::= { agentxMIB 1 } agentxGeneral OBJECT IDENTIFIER ::= { agentxObjects 1 } agentxConnection OBJECT IDENTIFIER ::= { agentxObjects 2 } agentxSession OBJECT IDENTIFIER ::= { agentxObjects 3 } agentxRegistration OBJECT IDENTIFIER ::= { agentxObjects 4 } agentxDefaultTimeout OBJECT-TYPE SYNTAX INTEGER (0..255) UNITS "seconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The default length of time, in seconds, that the master agent should allow to elapse after dispatching a message to a subagent before it regards the subagent as not responding. This is a system-wide value that may be overridden by the values associated with a particular subagent (agentxSessionTimeout) or a particular registered MIB region (agentxRegTimeout). If the associated values of agentxSessionTimeout, agentxRegTimeout and agentxDefaultTimeout all are zero, the master agent will not timeout while awaiting a response from the subagent. " DEFVAL { 5 } ::= { agentxGeneral 1 } AgentX Working Group Expires December 1999 [Page 7] Internet Draft AgentX MIB 9 June 1999 agentxMasterAgentXVer OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The AgentX protocol version supported by this master agent. The current protocol version is 1. Note that the master agent must also allow registration of earlier version subagents. " ::= { agentxGeneral 2 } -- The AgentX Subagent Connection Group agentxConnTableLastChange OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when the last row creation or deletion occurred in the agentxConnectionTable. " ::= { agentxConnection 1 } agentxConnectionTable OBJECT-TYPE SYNTAX SEQUENCE OF AgentxConnectionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The agentxConnectionTable tracks all current AgentX transport connections. There may be zero, one, or more AgentX sessions carried on a given AgentX connection. " ::= { agentxConnection 2 } agentxConnectionEntry OBJECT-TYPE SYNTAX AgentxConnectionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "An agentxConnectionEntry contains information describing a single AgentX transport connection. A connection may be used to support zero or more AgentX sessions. An entry is created when a new transport connection is established, and is destroyed when the transport connection is terminated. " INDEX { agentxConnIndex } ::= { agentxConnectionTable 1 } AgentX Working Group Expires December 1999 [Page 8] Internet Draft AgentX MIB 9 June 1999 AgentxConnectionEntry ::= SEQUENCE { agentxConnIndex Unsigned32, agentxConnOpenTime TimeStamp, agentxConnTransportDomain TDomain, agentxConnTransportAddress AgentxTAddress } agentxConnIndex OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "agentxConnIndex contains the value that uniquely identifies an open transport connection used by this master agent to provide AgentX service. Values of this index should not be re-used. The value assigned to a given transport connection is constant for the lifetime of that connection. " ::= { agentxConnectionEntry 1 } agentxConnOpenTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this connection was established and, therefore, its value when this entry was added to the table. " ::= { agentxConnectionEntry 2 } agentxConnTransportDomain OBJECT-TYPE SYNTAX TDomain MAX-ACCESS read-only STATUS current DESCRIPTION "The transport protocol in use for this connection to the subagent. " ::= { agentxConnectionEntry 3 } AgentX Working Group Expires December 1999 [Page 9] Internet Draft AgentX MIB 9 June 1999 agentxConnTransportAddress OBJECT-TYPE SYNTAX AgentxTAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The transport address of the remote (subagent) end of this connection to the master agent. This object may be zero-length for unix-domain sockets (and possibly other types of transport addresses) since the subagent need not bind a filename to its local socket. " ::= { agentxConnectionEntry 4 } -- The AgentX Subagent Session Group agentxSessionTableLastChange OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when the last row creation or deletion occurred in the agentxSessionTable. " ::= { agentxSession 1 } agentxSessionTable OBJECT-TYPE SYNTAX SEQUENCE OF AgentxSessionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of AgentX subagent sessions currently in effect. " ::= { agentxSession 2 } agentxSessionEntry OBJECT-TYPE SYNTAX AgentxSessionEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Information about a single open session between the AgentX master agent and a subagent is contained in this entry. An entry is created when a new session is successfully established and is destroyed either when the parent transport connection has terminated or when the session is closed. " INDEX { agentxConnIndex, agentxSessionIndex } ::= { agentxSessionTable 1 } AgentX Working Group Expires December 1999 [Page 10] Internet Draft AgentX MIB 9 June 1999 AgentxSessionEntry ::= SEQUENCE { agentxSessionIndex Unsigned32, agentxSessionObjectID OBJECT IDENTIFIER, agentxSessionDescr SnmpAdminString, agentxSessionAdminStatus INTEGER, agentxSessionOpenTime TimeStamp, agentxSessionAgentXVer INTEGER, agentxSessionTimeout INTEGER } agentxSessionIndex OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "A unique index for the subagent session. It is the same as h.sessionID defined in the agentx header. Note that if a subagent's session with the master agent is closed for any reason its index should not be re-used. " ::= { agentxSessionEntry 1 } agentxSessionObjectID OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-only STATUS current DESCRIPTION "This is taken from the o.id field of the agentx-Open-PDU. This attribute will report a value of '0.0' for subagents not supporting the notion of an AgentX session object identifier. " ::= { agentxSessionEntry 2 } agentxSessionDescr OBJECT-TYPE SYNTAX SnmpAdminString MAX-ACCESS read-only STATUS current DESCRIPTION "A textual description of the subagent. This is analogous to sysDescr defined in MIB-2 [2] and is taken from the o.descr field of the agentx-Open-PDU. This attribute will report a zero-length string value for subagents not supporting the notion of a session description. " ::= { agentxSessionEntry 3 } AgentX Working Group Expires December 1999 [Page 11] Internet Draft AgentX MIB 9 June 1999 agentxSessionAdminStatus OBJECT-TYPE SYNTAX INTEGER { up(1), down(2) } MAX-ACCESS read-write STATUS current DESCRIPTION "The administrative (desired) status of the subagent. Setting the value to 'down(2)' closes the subagent session (with c.reason set to 'reasonByManager'). " ::= { agentxSessionEntry 4 } agentxSessionOpenTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when this session was opened and, therefore, its value when this entry was added to the table. " ::= { agentxSessionEntry 5 } agentxSessionAgentXVer OBJECT-TYPE SYNTAX INTEGER (1..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The version of the AgentX protocol supported by the subagent. This must be less than or equal to the value of agentxMasterAgentXVer. " ::= { agentxSessionEntry 6 } agentxSessionTimeout OBJECT-TYPE SYNTAX INTEGER (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current AgentX Working Group Expires December 1999 [Page 12] Internet Draft AgentX MIB 9 June 1999 DESCRIPTION "The length of time, in seconds, that a master agent should allow to elapse after dispatching a message to this subagent before it regards the subagent as not responding. This value is taken from the o.timeout field of the agentx-Open-PDU. This is a subagent-specific value that may be overridden by values associated with specific registered MIB regions (see agentxRegTimeout). The default value of zero indicates that the master agent's default timeout value should be used (see agentxDefaultTimeout). " ::= { agentxSessionEntry 7 } -- The AgentX Registration Group agentxRegistrationTableLastChange OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime when the last row creation or deletion occurred in the agentxRegistrationTable. " ::= { agentxRegistration 1 } agentxRegistrationTable OBJECT-TYPE SYNTAX SEQUENCE OF AgentxRegistrationEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A table of registered regions. " ::= { agentxRegistration 2 } agentxRegistrationEntry OBJECT-TYPE SYNTAX AgentxRegistrationEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "Contains information for a single registered region. An entry is created when a subagent successfully registers a region and is destroyed for any of three reasons: this region is unregistered by the subagent, the parent session is closed, or the parent connection is closed. " INDEX { agentxConnIndex, agentxSessionIndex, agentxRegIndex } ::= { agentxRegistrationTable 1 } AgentX Working Group Expires December 1999 [Page 13] Internet Draft AgentX MIB 9 June 1999 AgentxRegistrationEntry ::= SEQUENCE { agentxRegIndex Unsigned32, agentxRegContext OCTET STRING, agentxRegStart OBJECT IDENTIFIER, agentxRegRangeSubId Unsigned32, agentxRegUpperBound Unsigned32, agentxRegPriority Unsigned32, agentxRegTimeout INTEGER, agentxRegInstance TruthValue } agentxRegIndex OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "agentxRegIndex uniquely identifies a registration entry. This value is constant for the lifetime of an entry. " ::= { agentxRegistrationEntry 1 } agentxRegContext OBJECT-TYPE SYNTAX OCTET STRING MAX-ACCESS read-only STATUS current DESCRIPTION "The context in which the subagent supports the objects in this region. A zero-length context indicates the default context. " ::= { agentxRegistrationEntry 2 } agentxRegStart OBJECT-TYPE SYNTAX OBJECT IDENTIFIER MAX-ACCESS read-only STATUS current DESCRIPTION "The starting OBJECT IDENTIFIER of this registration entry. The subagent identified by agentxSessionIndex implements objects starting at this value (inclusive). Note that this value could identify an object type, an object instance, or a partial object instance. " ::= { agentxRegistrationEntry 3 } AgentX Working Group Expires December 1999 [Page 14] Internet Draft AgentX MIB 9 June 1999 agentxRegRangeSubId OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "agentxRegRangeSubId is used to specify the range. This is taken from r.region_subid in the registration PDU. If the value of this object is zero, no range is specified. If it is non-zero, it identifies the `nth' sub-identifier in r.region for which this entry's agentxRegUpperBound value is substituted in the OID for purposes of defining the region's upper bound. " ::= { agentxRegistrationEntry 4 } agentxRegUpperBound OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "agentxRegUpperBound represents the upper-bound sub-identifier in a registration. This is taken from the r.upper_bound in the registration PDU. If agentxRegRangeSubid (r.region_subid) is zero, this value is also zero and is not used to define an upper bound for this registration. " ::= { agentxRegistrationEntry 5 } agentxRegPriority OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-only STATUS current DESCRIPTION "The subagent's priority when exporting this OID range. Lower values have higher priority. This value is taken from r.priority in the register PDU. Subagents should use the value of 127 for r.priority if a default value is desired. " ::= { agentxRegistrationEntry 6 } agentxRegTimeout OBJECT-TYPE SYNTAX INTEGER (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current AgentX Working Group Expires December 1999 [Page 15] Internet Draft AgentX MIB 9 June 1999 DESCRIPTION "The timeout value, in seconds, for subagent responses to requests associated with this OID range. A value of zero indicates the default value (indicated by agentxSessionTimeout or agentxDefaultTimeout) is to be used. This value is taken from the r.timeout field of the agentx-Register-PDU. " ::= { agentxRegistrationEntry 7 } agentxRegInstance OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "The value of agentxRegInstance is `true' for registrations for which the INSTANCE_REGISTRATION was set, and is `false' for all other registrations. " ::= { agentxRegistrationEntry 8 } -- Conformance Statements for AgentX agentxConformance OBJECT IDENTIFIER ::= { agentxMIB 2 } agentxMIBGroups OBJECT IDENTIFIER ::= { agentxConformance 1 } agentxMIBCompliances OBJECT IDENTIFIER ::= { agentxConformance 2 } -- Compliance Statements for AgentX agentxMIBCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for SNMP entities that implement the AgentX protocol. Note that a compliant agent can implement all objects in this MIB module as read-only. " MODULE -- this module MANDATORY-GROUPS { agentxMIBGroup } OBJECT agentxDefaultTimeout MIN-ACCESS read-only DESCRIPTION "Write access is not required. " AgentX Working Group Expires December 1999 [Page 16] Internet Draft AgentX MIB 9 June 1999 OBJECT agentxSessionAdminStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required. " ::= { agentxMIBCompliances 1 } agentxMIBGroup OBJECT-GROUP OBJECTS { agentxDefaultTimeout, agentxMasterAgentXVer, agentxConnTableLastChange, agentxConnOpenTime, agentxConnTransportDomain, agentxConnTransportAddress, agentxSessionTableLastChange, agentxSessionTimeout, agentxSessionObjectID, agentxSessionDescr, agentxSessionAdminStatus, agentxSessionOpenTime, agentxSessionAgentXVer, agentxRegistrationTableLastChange, agentxRegContext, agentxRegStart, agentxRegRangeSubId, agentxRegUpperBound, agentxRegPriority, agentxRegTimeout, agentxRegInstance } STATUS current DESCRIPTION "All accessible objects in the AgentX MIB. " ::= { agentxMIBGroups 1 } END AgentX Working Group Expires December 1999 [Page 17] Internet Draft AgentX MIB 9 June 1999 5. Intellectual Property The IETF takes no position regarding the validity or scope of any intellectual property or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; neither does it represent that it has made any effort to identify any such rights. Information on the IETF's procedures with respect to rights in standards-track and standards-related documentation can be found in BCP-11. Copies of claims of rights made available for publication and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementors or users of this specification can be obtained from the IETF Secretariat. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights which may cover technology that may be required to practice this standard. Please address the information to the IETF Executive Director. 6. Acknowledgements This document is the result of the efforts of the IETF AgentX Working Group (WG). This MIB is an evolution of the Subagent MIB by Bert Wijnen (wijnen@vnet.ibm.com) which in turn was derived from the SMUX-MIB by Marshall Rose [18]. Thanks are in order to the following AgentX WG members: Mike Daniele (Compaq Computer Corporation) Dale Francisco (Cisco Systems) Bob Natale (ACE*COMM Corporation) Randy Presuhn (BMC Software, Inc.) Shawn Routhier (Epilogue) Mike Thatcher (Independent Consultant) Special acknowledgement is made to: Maria Greene (Xedia) AgentX Working Group Expires December 1999 [Page 18] Internet Draft AgentX MIB 9 June 1999 Special acknowledgement is also made to the following individuals for participating in the 1998 AgentX testing summit (bakeoff) held in Sunnyvale, California: Jeff Case (SNMP Research, Inc.) Mike Daniele (Compaq Computer Corporation) Mark Ellison (Ellison Software Consulting, Inc.) Lauren Heintz (BMC Software, Inc.) Verne Hyde (Independent Consultant) Bob Natale (ACE*COMM Corporation) Shawn Routhier (Epilogue) Mike Thatcher (Independent Consultant) Bert Wijnen (IBM T. J. Watson Research Center) 7. Security Considerations There are a number of management objects defined in this MIB that have a MAX-ACCESS clause of read-write and/or read-create. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection can have a negative effect on network operations. There are a number of managed objects in this MIB that may contain sensitive information. These are: agentxDefaultTimeout and agentxSessionAdminStatus. Setting agentxDefaultTimeout to an inappropriately small value can prevent new subagent sessions from being usable. Setting agentxSessionAdminStatus to an inappropriate value can effectively prevent access to management information, or provide access to inappropriate information. It is thus important to control even GET access to these objects and possibly to even encrypt the values of these objects when sending them over the network via SNMP. Not all versions of SNMP provide features for such a secure environment. SNMPv1 by itself is not a secure environment. Even if the network itself is secure (for example by using IPSec), even then, there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB. It is recommended that the implementers consider the security features as provided by the SNMPv3 framework. Specifically, the use of the User-based Security Model RFC 2574 [12] and the View-based Access Control Model RFC 2575 [15] is recommended. AgentX Working Group Expires December 1999 [Page 19] Internet Draft AgentX MIB 9 June 1999 It is then a customer/user responsibility to ensure that the SNMP entity giving access to an instance of this MIB, is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/create/delete) them. AgentX Working Group Expires December 1999 [Page 20] Internet Draft AgentX MIB 9 June 1999 8. References [1] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for Describing SNMP Management Frameworks", RFC 2571, Cabletron Systems, Inc., BMC Software, Inc., IBM T. J. Watson Research, April 1999 [2] Rose, M., and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based Internets", RFC 1155, STD 16, Performance Systems International, Hughes LAN Systems, May 1990 [3] Rose, M., and K. McCloghrie, "Concise MIB Definitions", RFC 1212, STD 16, Performance Systems International, Hughes LAN Systems, March 1991 [4] M. Rose, "A Convention for Defining Traps for use with the SNMP", RFC 1215, Performance Systems International, March 1991 [5] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M., and S. Waldbusser, "Structure of Management Information Version 2 (SMIv2)", RFC 2578, STD 58, Cisco Systems, SNMPinfo, TU Braunschweig, SNMP Research, First Virtual Holdings, International Network Services, April 1999 [6] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M., and S. Waldbusser, "Textual Conventions for SMIv2", RFC 2579, STD 58, Cisco Systems, SNMPinfo, TU Braunschweig, SNMP Research, First Virtual Holdings, International Network Services, April 1999 [7] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M., and S. Waldbusser, "Conformance Statements for SMIv2", RFC 2580, STD 58, Cisco Systems, SNMPinfo, TU Braunschweig, SNMP Research, First Virtual Holdings, International Network Services, April 1999 [8] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network Management Protocol", RFC 1157, STD 15, SNMP Research, Performance Systems International, Performance Systems International, MIT Laboratory for Computer Science, May 1990. [9] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. AgentX Working Group Expires December 1999 [Page 21] Internet Draft AgentX MIB 9 June 1999 [10] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Transport Mappings for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1906, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [11] Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)", RFC 2572, SNMP Research, Inc., Cabletron Systems, Inc., BMC Software, Inc., IBM T. J. Watson Research, April 1999 [12] Blumenthal, U., and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", RFC 2574, IBM T. J. Watson Research, April 1999 [13] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol Operations for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1905, SNMP Research, Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc., International Network Services, January 1996. [14] Levi, D., Meyer, P., and B. Stewart, "SNMPv3 Applications", RFC 2573, SNMP Research, Inc., Secure Computing Corporation, Cisco Systems, April 1999 [15] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)", RFC 2575, IBM T. J. Watson Research, BMC Software, Inc., Cisco Systems, Inc., April 1999 [16] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction to Version 3 of the Internet-standard Network Management Framework", RFC 2570, SNMP Research, Inc., TIS Labs at Network Associates, Inc., Ericsson, Cisco Systems, April 1999 [17] Daniele, M., Wijnen, B., and D. Francisco, "Agent Extensibility (AgentX) Protocol, Version 1", RFC 2257 Digital Equipment Corporation, T.J. Watson Research Center, IBM Corp., Cisco Systems, Januuary, 1998 [18] Rose, M., "SNMP MUX Protocol and MIB", RFC1227, Performance Systems International, May 1991. AgentX Working Group Expires December 1999 [Page 22] Internet Draft AgentX MIB 9 June 1999 9. Authors' and Editor's Addresses Lauren Heintz Cerent Corporation 1450 North McDowell Blvd. Petaluma, CA 94954-6515 USA Phone: +1 707-793-1714 EMail: lauren.heintz@cerent.com Smitha Gudur Independent Consultant EMail: sgudur@hotmail.com Mark Ellison (WG editor) Ellison SOftware Consulting, Inc. 33 Eastview Drive, Suite #10 Wilton, NH 03086 USA Phone: +1 603-654-2703 Email: ellison@world.std.com 10. 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The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns. This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING AgentX Working Group Expires December 1999 [Page 23] Internet Draft AgentX MIB 9 June 1999 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. AgentX Working Group Expires December 1999 [Page 24]