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This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects for configuring aspects of the DYMO routing process. The DYMO-MIB also reports state information, performance information, and notifications. In addition to configuration, this additional state, performance and notification information is useful to management operators troubleshooting DYMO routing problems.
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Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at http://datatracker.ietf.org/drafts/current/.
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.”
This Internet-Draft will expire on July 24, 2011.
Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
1.
Introduction
2.
The Internet-Standard Management Framework
3.
Conventions
4.
Overview
4.1.
DYMO Management Model
4.2.
Terms
5.
Structure of the MIB Module
5.1.
Textual Conventions
5.2.
The Configuration Group
5.3.
The State Group
5.3.1.
Routing Table
5.4.
The Performance Group
5.5.
The Notifications Group
6.
Relationship to Other MIB Modules
6.1.
Relationship to the SNMPv2-MIB
6.2.
MIB modules required for IMPORTS
7.
Definitions
8.
Security Considerations
9.
IANA Considerations
10.
Contributors
11.
Acknowledgements
12.
References
12.1.
Normative References
12.2.
Informative References
Appendix A.
Change Log
Appendix B.
Open Issues
Appendix C.
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This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects for configuring aspects of a Dynamic MANET On-demand (DYMO) routing [I‑D.ietf‑manet‑dymo] (Chakeres, I. and C. Perkins, “Dynamic MANET On-demand (DYMO) Routing,” July 2010.) process. The DYMO-MIB also reports state information, performance metrics, and notifications. In addition to configuration, this additional state, performance and notification information is useful to management stations troubleshooting routing problems.
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For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410] (Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” December 2002.).
Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” April 1999.), STD 58, RFC 2579 [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.) and STD 58, RFC 2580 [RFC2580] (McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” April 1999.).
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The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119] (Bradner, S., “Key words for use in RFCs to Indicate Requirement Levels,” March 1997.).
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The Dynamic MANET On-demand (DYMO) routing protocol [I‑D.ietf‑manet‑dymo] (Chakeres, I. and C. Perkins, “Dynamic MANET On-demand (DYMO) Routing,” July 2010.) is intended for use by mobile nodes in wireless, multihop networks. DYMO determines unicast routes among DYMO routers within the network in an on-demand fashion, offering improved convergence in dynamic topologies.
A DYMO router's MIB contains DYMO process configuration parameters (e.g. interfaces), state information (e.g. sequence number), performance counters (e.g. number of control messages), and notifications.
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This section describes the management model for the DYMO routing protocol.
The MIB is comprised of four groups, i.e., Notifications, Configuration, State and Performance. The configuration of the managed devices is controlled by the objects in the Configuration Group. These are divided into Nodal and Interface objects. The bulk of the DYMO configuration is in the Nodal objects which control protocol behavior. The Interface objects merely identify/configure interfaces to enable DYMO routing over their interface. The Nodal objects are further divided into routing (or protocol) objects and Gateway objects. Gateway objects define other routing prefixes for which the node acts as a routing proxy on behalf of these non-local prefixes.
The Configuration Objects drive the behavior of the managed DYMO device and hence determines the information in the remaining groups, i.e., State, Performance and Notifications. The State objects primarily present the resulting forwarding table objects. The Performance group primarily is comprised of counters for monitoring the number of DYMO routing messages received locally, per node and per interface. The Notifications group contains objects which monitor changes to the interface configuration and the gateway prefixes configuration.
See the below diagram outlining the DYMO-MIB device management model.
+------------------------------------------+ | CONFIGURATION GROUP | | | | Nodal Interface | | | | +-------+ +-------+ +-------+ | | |Gateway| |Routing| |Routing| | | +-------+ +-------+ +-------+ | | | +------------------------------------------+ || || || || || || || || || \ / \ / \ / \/ \/ \/ +-------+ +-------------+ +---------------+ | STATE | | PERFORMANCE | | NOTIFICATIONS | | GROUP | | GROUP | | GROUP | +-------+ +-------------+ +---------------+
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The following definitions apply throughout this document:
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This section presents the structure of the DYMO MIB module. The objects are arranged into the following groups:
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The textual conventions used in the DYMO-MIB are as follows. The RowStatus and TruthValue textual conventions are imported from RFC 2579 [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.). The DymoInterfaceOperStatus is defined within the DYMO-MIB. This contains the current operational status of the DYMO interface.
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The DYMO device is configured with a set of controls. The list of configuration controls for the DYMO device follow.
Protocol Configuration Parameters:
Protocol Configuration Tables:
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The State Subtree reports current state information. State information from the DYMO-MIB is primarily contained in the 'Routing' Table.
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The DYMO routing table contains information related to IP forwarding entries found by the node's DYMO processes.
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The Performance subtree reports primarily counters that relate to DYMO protocol activity. The DYMO performance objects consists of per node and per interface objects:
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The Notifications Subtree contains the list of notifications supported within the DYMO-MIB and their intended purpose or utility. This group is currently contains two notification objects, one related to status changes in DYMO interfaces and one related to changes in the gateway prefixes table.
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The text of this section specifies the relationship of the MIB modules contained in this document to other standards, particularly to standards containing other MIB modules. Definitions imported from other MIB modules and other MIB modules that SHOULD be implemented in conjunction with the MIB module contained within this document are identified in this section.
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The 'system' group in the SNMPv2-MIB [RFC3418] (Presuhn, R., “Management Information Base (MIB) for the Simple Network Management Protocol (SNMP),” December 2002.) is defined as being mandatory for all systems, and the objects apply to the entity as a whole. The 'system' group provides identification of the management entity and certain other system-wide data. The DYMO-MIB does not duplicate those objects.
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The DYMO-MIB module IMPORTS objects from SNMPv2-SMI [RFC2578] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” April 1999.), SNMPv2-TC [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.), SNMPv2-CONF [RFC2580] (McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” April 1999.), INET-ADDRESS-MIB [RFC4001] (Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, “Textual Conventions for Internet Network Addresses,” February 2005.) and IF-MIB [RFC2863] (McCloghrie, K. and F. Kastenholz, “The Interfaces Group MIB,” June 2000.).
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MANET-DYMO-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, Counter32, Integer32, Unsigned32, mib-2 FROM SNMPv2-SMI -- [RFC2578] TEXTUAL-CONVENTION, RowStatus, TruthValue FROM SNMPv2-TC -- [RFC2579] MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP FROM SNMPv2-CONF -- [RFC2580] InetAddress, InetAddressType, InetAddressPrefixLength FROM INET-ADDRESS-MIB -- [RFC4001] InterfaceIndexOrZero FROM IF-MIB -- [RFC2863] ; manetDymoMIB MODULE-IDENTITY LAST-UPDATED "201101191200Z" -- January 19, 2011 ORGANIZATION "IETF MANET Working Group" CONTACT-INFO "WG E-Mail: manet@ietf.org WG Chairs: ian.chakeres@gmail.com jmacker@nrl.navy.mil Editors: Sean Harnedy Booz Allen Hamilton 333 City Boulevard West Orange, CA 92868 USA +1 714 938-3898 harnedy_sean@bah.com Robert G. Cole US Army CERDEC Space and Terrestrial Communications 328 Hopkins Road Aberdeen Proving Ground, MD 21005 USA +1 410 278-6779 robert.g.cole@us.army.mil Ian D Chakeres CenGen 9250 Bendix Road North Columbia, Maryland 21045 USA ian.chakeres@gmail.com" DESCRIPTION "This MIB module contains managed object definitions for the Dynamic MANET On-demand (DYMO) routing protocol as defined in: Chakeres,I., and C. Perkins, Dynamic MANET On-demand (DYMO) Routing, draft-ietf-manet-dymo-21, July 26, 2010. Copyright (C) The IETF Trust (2008). This version of this MIB module is part of RFC xxxx; see the RFC itself for full legal notices." -- Revision History REVISION "201101191200Z" -- January 19, 2011 DESCRIPTION "Fifth draft of this MIB module published as draft-ietf-manet-dymo-mib-04.txt. Changes include: - Incorporated the DYMO ID by adding Instance Table. - Added dymoSetNotification for improved control of DYMO Notifications. - Updated various object names to be consistent with current draft-ietf-manet-dymo-21. " REVISION "200910251200Z" -- October 25, 2009 DESCRIPTION "Fourth draft of this MIB module published as draft-ietf-manet-dymo-mib-03.txt. - Minor changes to textual material, including additions to the IMPORTS text. - Added DEFVAL clauses to all read-write configuration objects with defaults identified in the DYMO draft." REVISION "200902241200Z" -- February 24, 2009 DESCRIPTION "Third draft of this MIB module published as draft-ietf-manet-dymo-mib-02.txt. - Minor changes to dymoInterfacesTable and dymoResponsibleAddrTable. - Added global dymoAdminStatus and interface specific dymoIfAdminStatus. - Imported InterfaceIndexOrZero type from IF-MIB." REVISION "200811031200Z" -- November 03, 2008 DESCRIPTION "Second draft of this MIB module published as draft-ietf-manet-dymo-mib-01.txt. Minor changes to dymoInterfacesTable and dymoResponsibleAddrTable." REVISION "200805141200Z" -- May 14, 2008 DESCRIPTION "Initial draft of this MIB module published as draft-ietf-manet-dymo-mib-00.txt." -- RFC-Editor assigns XXXX ::= { mib-2 999 } -- to be assigned by IANA -- -- TEXTUAL CONVENTIONs -- Status ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "An indication of the operability of a DYMO function or feature. For example, the status of an interface: 'enabled' indicates that it is willing to communicate with other DYMO routers, and 'disabled' indicates that it is not." SYNTAX INTEGER { enabled (1), disabled (2) } -- -- Top-Level Object Identifier Assignments -- dymoMIBNotifications OBJECT IDENTIFIER ::= { manetDymoMIB 0 } dymoMIBObjects OBJECT IDENTIFIER ::= { manetDymoMIB 1 } dymoMIBConformance OBJECT IDENTIFIER ::= { manetDymoMIB 2 } -- -- dymoConfigurationGroup -- -- This group contains the DYMO objects that configure specific -- options that determine the overall performance and operation -- of the routing protocol for the router device and its -- interfaces. -- dymoConfigurationGroup OBJECT IDENTIFIER ::= { dymoMIBObjects 1 } -- -- DYMO Global Router Configuration Group -- dymoRouterConfigGroup OBJECT IDENTIFIER ::= {dymoConfigurationGroup 1} dymoInstanceTable OBJECT-TYPE SYNTAX SEQUENCE OF DymoInstanceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO Instance Table describes the DYMO ...." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. The DID." ::= { dymoRouterConfigGroup 1 } dymoInstanceEntry OBJECT-TYPE SYNTAX DymoInstanceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO instance entry describes one DYMO process as indexed by its DID." INDEX { dymoInstanceIndex } ::= { dymoInstanceTable 1 } DymoInstanceEntry ::= SEQUENCE { dymoInstanceIndex Integer32, dymoInstanceDid Integer32, dymoInstanceAdminStatus Status, dymoInstanceRowStatus RowStatus } dymoInstanceIndex OBJECT-TYPE SYNTAX Integer32 (0..255) MAX-ACCESS not-accessible STATUS current DESCRIPTION "The instance index for this DYMO process." ::= { dymoInstanceEntry 1 } dymoInstanceDid OBJECT-TYPE SYNTAX Integer32 (0..255) MAX-ACCESS read-write STATUS current DESCRIPTION "The DYMO ID of this instance of the DYMO process. " ::= { dymoInstanceEntry 2 } dymoInstanceAdminStatus OBJECT-TYPE SYNTAX Status MAX-ACCESS read-write STATUS current DESCRIPTION "The administrative status of this DYMO process in the router. Multiple processes are allowed. The value 'enabled' denotes that the DYMO Process is active on at least one interface; 'disabled' disables it on all interfaces. This object is persistent and when written the entity SHOULD save the change to non-volatile storage." ::= { dymoInstanceEntry 3 } dymoInstanceRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object permits management of the table by facilitating actions such as row creation, construction, and destruction. The value of this object has no effect on whether other objects in this conceptual row can be modified." ::= { dymoInstanceEntry 4 } dymoMaxHopLimit OBJECT-TYPE SYNTAX Unsigned32 (0..255) UNITS "hops" MAX-ACCESS read-write STATUS current DESCRIPTION "The maximum number of hops. The suggested value default is 10 hops. This is the DYMO MSG_HOPLIMIT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 10 } ::= { dymoRouterConfigGroup 2 } dymoRouteTimeout OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The route timeout value. The suggested default value is 5000 milliseconds. This is the DYMO ROUTE_TIMEOUT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 5000 } ::= { dymoRouterConfigGroup 3 } dymoRouteAgeMinTimeout OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The minimum route age timeout value. The suggested default value is 1000 milliseconds. This is the DYMO ROUTE_AGE_MIN_TIMEOUT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 1000 } ::= { dymoRouterConfigGroup 4 } dymoRouteSeqnumAgeMaxTimeout OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The maximum route age timeout value. The suggested default value is 60,000 milliseconds. This is the DYMO ROUTE_SEQNUM_AGE_MAX_TIMEOUT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 60000 } ::= { dymoRouterConfigGroup 5 } dymoRouteUsedTimeout OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The route used timeout value. The suggested default value is to set this to the dymoRouteTimeout object value (whose default is 5000 milliseconds). This is the DYMO ROUTE_USED_TIMEOUT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 5000 } ::= { dymoRouterConfigGroup 6 } dymoRouteDeleteTimeout OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The route delete timeout value. The suggested default value is 2 * dymoRouteTimeout value (which is equal to 10000 milliseconds if using the default value for the dymoRouteTimeout value). This is the DYMO ROUTE_DELETE_TIMEOUT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 10000 } ::= { dymoRouterConfigGroup 7 } dymoRouteRreqWaitTime OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The Route Request wait time. The suggested default value is 2000 milliseconds. This is the DYMO ROUTE_RREQ_WAIT_TIME parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 2000 } ::= { dymoRouterConfigGroup 8 } dymoDiscoveryAttemptsMax OBJECT-TYPE SYNTAX Unsigned32 (1..16) UNITS "attempts" MAX-ACCESS read-write STATUS current DESCRIPTION "The number of Route Request retry attempts. The suggested default value is 3. This is the DYMO DISCOVERY_ATTEMPTS_MAX parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 3 } ::= { dymoRouterConfigGroup 9 } dymoUnicastMsgSentTimeout OBJECT-TYPE SYNTAX Unsigned32 (1..65535) UNITS "milliseconds" MAX-ACCESS read-write STATUS current DESCRIPTION "The message sent timeout value for unicast packets. The suggested default value is 1000 milliseconds. This is the DYMO UNICAST_MESSAGE_SENT_TIMEOUT parameter value." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." DEFVAL { 1000 } ::= { dymoRouterConfigGroup 10 } -- -- DYMO Interfaces Configuration Table -- dymoInterfaceTable OBJECT-TYPE SYNTAX SEQUENCE OF DymoInterfaceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO Interface Table describes the DYMO interfaces that are participating in the DYMO routing protocol. The ifIndex is from the interfaces group defined in the Interfaces Group MIB." REFERENCE "RFC 2863 - The Interfaces Group MIB, McCloghrie, K., and F. Kastenholtz, June 2000." ::= { dymoConfigurationGroup 2 } dymoInterfaceEntry OBJECT-TYPE SYNTAX DymoInterfaceEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO interface entry describes one DYMO interface as indexed by its ifIndex." INDEX { dymoIfIndex } ::= { dymoInterfaceTable 1 } DymoInterfaceEntry ::= SEQUENCE { dymoIfIndex InterfaceIndexOrZero, dymoIfAdminStatus Status, dymoIfRowStatus RowStatus } dymoIfIndex OBJECT-TYPE SYNTAX InterfaceIndexOrZero MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ifIndex for this DYMO interface." ::= { dymoInterfaceEntry 1 } dymoIfAdminStatus OBJECT-TYPE SYNTAX Status MAX-ACCESS read-create STATUS current DESCRIPTION "The DYMO interface's administrative status. The value 'enabled' denotes that the interface is running the DYMO routing protocol. The value 'disabled' denotes that the interface is external to DYMO." ::= { dymoInterfaceEntry 2 } dymoIfRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object permits management of the table by facilitating actions such as row creation, construction, and destruction. The value of this object has no effect on whether other objects in this conceptual row can be modified." ::= { dymoInterfaceEntry 3 } -- -- DYMO Responsible Address Table -- dymoResponsibleAddrTable OBJECT-TYPE SYNTAX SEQUENCE OF DymoResponsibleAddrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO Responsible Address Table is a list of IP address prefixes, and their associated prefix length for which the DYMO router is responsible." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoConfigurationGroup 3 } dymoResponsibleAddrEntry OBJECT-TYPE SYNTAX DymoResponsibleAddrEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "A single host address range. Information in this table is persistent and when this object is written, the entity SHOULD save the change to non-volatile storage." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." INDEX { dymoResponsibleAddrIndex } ::= { dymoResponsibleAddrTable 1 } DymoResponsibleAddrEntry ::= SEQUENCE { dymoResponsibleAddrIndex Unsigned32, dymoResponsibleAddrType InetAddressType, dymoResponsibleAddr InetAddress, dymoResponsibleAddrPrefixLen InetAddressPrefixLength, dymoResponsibleAddrRowStatus RowStatus } dymoResponsibleAddrIndex OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS not-accessible STATUS current DESCRIPTION "This object is the index into this table." ::= { dymoResponsibleAddrEntry 1 } dymoResponsibleAddrType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS read-create STATUS current DESCRIPTION "The type of the dymoResponsibleAddr, as defined in the InetAddress MIB [RFC 4001]." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoResponsibleAddrEntry 2 } dymoResponsibleAddr OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS read-create STATUS current DESCRIPTION "The destination IP address of this route. The type of this address is determined by the value of the dymoResponsibleAddrType object." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoResponsibleAddrEntry 3 } dymoResponsibleAddrPrefixLen OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS read-create STATUS current DESCRIPTION "Indicates the number of leading one bits that form the mask to be logical-AND'd with the destination address before being compared to the value in the dymoResonsibleAddr field." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoResponsibleAddrEntry 4 } dymoResponsibleAddrRowStatus OBJECT-TYPE SYNTAX RowStatus MAX-ACCESS read-create STATUS current DESCRIPTION "This object permits management of the table by facilitating actions such as row creation, construction, and destruction. The value of this object has no effect on whether other objects in this conceptual row can be modified." ::= { dymoResponsibleAddrEntry 5 } -- -- dymoStateGroup -- -- Contains information describing the current state of the DYMO -- process such as the DYMO routing table. -- dymoStateGroup OBJECT IDENTIFIER ::= { dymoMIBObjects 2 } dymoCurrentSeqNum OBJECT-TYPE SYNTAX Unsigned32 (1..65535) MAX-ACCESS read-only STATUS current DESCRIPTION "The current DYMO sequence number. The DYMO sequence numbers allow nodes to judge the freshness of routing information and ensures loop freedom. If the sequence number has been assigned to be the largest possible number representable as a 16-bit unsigned integer (i.e., 65,535), then the sequence number is set to 256 when incremented. Setting the sequence number to 256 allows other nodes to detect that the number has rolled over and the node has not lost its sequence number (e.g., via reboot)." ::= { dymoStateGroup 1 } -- -- DYMO Routing Table -- dymoRoutingTable OBJECT-TYPE SYNTAX SEQUENCE OF DymoRoutingEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO Routing Table describes the current routing information learned via DYMO control messages." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 2 Suggested Parameter Values." ::= { dymoStateGroup 2 } dymoRoutingEntry OBJECT-TYPE SYNTAX DymoRoutingEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO routing entry contains a piece of routing information for a particular set of addresses." INDEX { dymoRoutingIpAddrType, dymoRoutingIpAddr, dymoRoutingPrefixLen } ::= { dymoRoutingTable 1 } DymoRoutingEntry ::= SEQUENCE { dymoRoutingIpAddrType InetAddressType, dymoRoutingIpAddr InetAddress, dymoRoutingPrefixLen InetAddressPrefixLength, dymoRoutingSeqNum Unsigned32, dymoRoutingNextHopIpAddrType InetAddressType, dymoRoutingNextHopIpAddress InetAddress, dymoRoutingNextHopInterface InterfaceIndexOrZero, dymoRoutingForwardingFlag TruthValue, dymoRoutingBrokenFlag TruthValue, dymoRoutingDist Unsigned32 } dymoRoutingIpAddrType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS not-accessible STATUS current DESCRIPTION "The routing table address IP address type." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoRoutingEntry 1 } dymoRoutingIpAddr OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS not-accessible STATUS current DESCRIPTION "The routing table Inet IPv4 or IPv6 address." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoRoutingEntry 2 } dymoRoutingPrefixLen OBJECT-TYPE SYNTAX InetAddressPrefixLength MAX-ACCESS not-accessible STATUS current DESCRIPTION "The prefix length. This is a decimal value that indicates the number of contiguous, higher-order bits of the address that make up the network portion of the address." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, July 2010. Table 3 Important Settings." ::= { dymoRoutingEntry 3 } dymoRoutingSeqNum OBJECT-TYPE SYNTAX Unsigned32 (1..65535) MAX-ACCESS read-only STATUS current DESCRIPTION "The interface sequence number. This is the DYMO SeqNum associated with this routing information." ::= { dymoRoutingEntry 4 } dymoRoutingNextHopIpAddrType OBJECT-TYPE SYNTAX InetAddressType MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address type of the next hop." ::= { dymoRoutingEntry 5 } dymoRoutingNextHopIpAddress OBJECT-TYPE SYNTAX InetAddress MAX-ACCESS read-only STATUS current DESCRIPTION "The IP address of the next hop." ::= { dymoRoutingEntry 6 } dymoRoutingNextHopInterface OBJECT-TYPE SYNTAX InterfaceIndexOrZero MAX-ACCESS read-only STATUS current DESCRIPTION "The interface ifIndex for sending packets toward the destination route address." ::= { dymoRoutingEntry 7 } dymoRoutingForwardingFlag OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "The Forwarding Flag indicates whether this route can be used for forwarding data packets. A value 'true(1)' indicates that this route is being used for forwarding of data packets, while a value 'false(2)' indicates that it is not being used for forwarding." ::= { dymoRoutingEntry 8 } dymoRoutingBrokenFlag OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "The Broken Flag indicates whether this Route is broken. This flag is set if the next-hop becomes unreachable or in response to processing a RERR. A value 'true(1)' indicates that this route is broken, while a value 'false(2)' indicates that it is not broken." ::= { dymoRoutingEntry 9 } dymoRoutingDist OBJECT-TYPE SYNTAX Unsigned32 (0..65535) UNITS "hops" MAX-ACCESS read-only STATUS current DESCRIPTION "The distance to the destination address's DYMO router. This is a metric of the distance a message or piece of information has traversed. The minimum value of distance is the number of IP hops traversed. The maximum value is 65,535. This parameter is an optional field in the DYMO routing table. If the DYMO Route.Dist is not supported by this device, then this object should be set to '0'." REFERENCE "Dynamic MANET On-demand (DYMO) Routing, Chakeres, I., and C. Perkins, April 2008. Section 3 Terminology." ::= { dymoRoutingEntry 10 } -- -- DYMO Performance Group (Performance Management) -- -- Contains objects which help to characterize the -- performance of the DYMO process, typically statistics -- counters. There are two types of DYMO statistics: -- global counters and per interface counters. -- dymoPerformanceGroup OBJECT IDENTIFIER ::= { dymoMIBObjects 3 } dymoGlobalPerfGroup OBJECT IDENTIFIER ::= { dymoPerformanceGroup 1 } dymoRreqOriginated OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREQ messages that this DYMO device has initiated." ::= { dymoGlobalPerfGroup 1 } dymoRreqForwarded OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREQ messages that this DYMO device has forwarded, i.e., this device neither originated or terminated the RREQ message." ::= { dymoGlobalPerfGroup 2 } dymoRreqReceived OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREQ messages that this DYMO device has received as the target of the message." ::= { dymoGlobalPerfGroup 3 } dymoRrepOriginated OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREP messages that this DYMO device has initiated." ::= { dymoGlobalPerfGroup 4 } dymoRrepForwarded OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREP messages that this DYMO device has forwarded, i.e, this device neither originated or terminated the RREP message." ::= { dymoGlobalPerfGroup 5 } dymoRrepReceived OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREP messages that this DYMO device has received as the target of the message." ::= { dymoGlobalPerfGroup 6 } dymoRrerOriginated OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RRER messages that this DYMO device has initiated." ::= { dymoGlobalPerfGroup 7 } dymoRrerForwarded OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RRER messages that this DYMO device has forwarded, i.e., this device neither originated or terminated the RRER message." ::= { dymoGlobalPerfGroup 8 } dymoRrerReceived OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RRER messages that this DYMO device has received as the target of the message." ::= { dymoGlobalPerfGroup 9 } -- -- Per DYMO Interface Performance Table -- dymoInterfacePerfGroup OBJECT IDENTIFIER ::= {dymoPerformanceGroup 2} dymoInterfacePerfTable OBJECT-TYPE SYNTAX SEQUENCE OF DymoInterfacePerfEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO Interface Performance Table describes the DYMO statistics per interface." ::= { dymoInterfacePerfGroup 1 } dymoInterfacePerfEntry OBJECT-TYPE SYNTAX DymoInterfacePerfEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The DYMO Interface Performance entry describes the statistics for a particular DYMO interface." INDEX { dymoIfPerfIfIndex } ::= { dymoInterfacePerfTable 1 } DymoInterfacePerfEntry ::= SEQUENCE { dymoIfPerfIfIndex InterfaceIndexOrZero, dymoIfRreqOriginated Counter32, dymoIfRreqForwarded Counter32, dymoIfRreqReceived Counter32, dymoIfRrepOriginated Counter32, dymoIfRrepForwarded Counter32, dymoIfRrepReceived Counter32, dymoIfRrerOriginated Counter32, dymoIfRrerForwarded Counter32, dymoIfRrerReceived Counter32 } dymoIfPerfIfIndex OBJECT-TYPE SYNTAX InterfaceIndexOrZero MAX-ACCESS not-accessible STATUS current DESCRIPTION "The ifIndex for this DYMO interface that is collecting this set of performance management statistics." ::= { dymoInterfacePerfEntry 1 } dymoIfRreqOriginated OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREQ messages that this DYMO interface has initiated." ::= { dymoInterfacePerfEntry 2 } dymoIfRreqForwarded OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREQ messages that this DYMO interface has forwarded, i.e., this interface neither originated nor terminated the RREQ message." ::= { dymoInterfacePerfEntry 3 } dymoIfRreqReceived OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREQ messages that this DYMO interface has received as the target of the message." ::= { dymoInterfacePerfEntry 4 } dymoIfRrepOriginated OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREP messages that this DYMO interface has initiated." ::= { dymoInterfacePerfEntry 5 } dymoIfRrepForwarded OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREP messages that this DYMO interface has forwarded, i.e., this interface neither originated nor terminated the RREP message." ::= { dymoInterfacePerfEntry 6 } dymoIfRrepReceived OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RREP messages that this DYMO interface has received as the target of the message." ::= { dymoInterfacePerfEntry 7 } dymoIfRrerOriginated OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RRER messages that this DYMO interface has initiated." ::= { dymoInterfacePerfEntry 8 } dymoIfRrerForwarded OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RRER messages that this DYMO interface has forwarded, i.e., this interface neither originated nor terminated the RRER message." ::= { dymoInterfacePerfEntry 9 } dymoIfRrerReceived OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "A counter of the number of RRER messages that this DYMO interface has received as the target of the message." ::= { dymoInterfacePerfEntry 10 } -- -- Notifications -- dymoMIBNotifControl OBJECT IDENTIFIER ::= { dymoMIBNotifications 1 } dymoMIBNotifObjects OBJECT IDENTIFIER ::= { dymoMIBNotifications 2 } -- dymoMIBNotifControl dymoSetNotification OBJECT-TYPE SYNTAX OCTET STRING (SIZE(4)) MAX-ACCESS read-write STATUS current DESCRIPTION "A 4-octet string serving as a bit map for the notification events defined by the DYMO notifications. This object is used to enable and disable specific DYMO notifications where a 1 in the bit field represents enabled. The right-most bit (least significant) represents notification 0. This object is persistent and when written the entity SHOULD save the change to non-volatile storage. " ::= { dymoMIBNotifControl 1 } -- dymoMIBNotifObjects dymoInstanceAdminStatusChange NOTIFICATION-TYPE OBJECTS { dymoInstanceAdminStatus, dymoInstanceDid } STATUS current DESCRIPTION "This notification is generated when the administrative status of a DYMO process changes." ::= { dymoMIBNotifObjects 1 } dymoInterfaceAdminStatusChange NOTIFICATION-TYPE OBJECTS { dymoIfAdminStatus } STATUS current DESCRIPTION "This notification is generated when the administrative status of a DYMO interface changes." ::= { dymoMIBNotifObjects 2 } dymoResponsibleAddrEntryChange NOTIFICATION-TYPE OBJECTS { dymoResponsibleAddrRowStatus } STATUS current DESCRIPTION "This notification is generated when the status of an entry in the DYMO Responsible Address Table changes. This includes the creation or deletion of a row." ::= { dymoMIBNotifObjects 3 } -- -- Compliance Statements -- dymoCompliances OBJECT IDENTIFIER ::= { dymoMIBConformance 1 } dymoMIBGroups OBJECT IDENTIFIER ::= { dymoMIBConformance 2 } dymoBasicCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The basic implementation requirements for managed network entities that implement the DYMO routing protocol." MODULE -- this module MANDATORY-GROUPS { dymoConfigObjectsGroup } ::= { dymoCompliances 1 } dymoFullCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The full implementation requirements for managed network entities that implement the DYMO routing protocol." MODULE -- this module MANDATORY-GROUPS { dymoConfigObjectsGroup, dymoStateObjectsGroup, dymoPerfObjectsGroup, dymoNotifObjectsGroup, dymoNotificationGroup } ::= { dymoCompliances 2 } -- -- Units of Conformance -- dymoConfigObjectsGroup OBJECT-GROUP OBJECTS { dymoInstanceAdminStatus, dymoInstanceDid, dymoInstanceRowStatus, dymoMaxHopLimit, dymoRouteTimeout, dymoRouteAgeMinTimeout, dymoRouteSeqnumAgeMaxTimeout, dymoRouteUsedTimeout, dymoRouteDeleteTimeout, dymoRouteRreqWaitTime, dymoDiscoveryAttemptsMax, dymoUnicastMsgSentTimeout, dymoIfAdminStatus, dymoIfRowStatus, dymoResponsibleAddrType, dymoResponsibleAddr, dymoResponsibleAddrPrefixLen, dymoResponsibleAddrRowStatus } STATUS current DESCRIPTION "Set of DYMO configuration objects implemented in this module." ::= { dymoMIBGroups 1 } dymoStateObjectsGroup OBJECT-GROUP OBJECTS { dymoCurrentSeqNum, dymoRoutingSeqNum, dymoRoutingNextHopIpAddrType, dymoRoutingNextHopIpAddress, dymoRoutingNextHopInterface, dymoRoutingForwardingFlag, dymoRoutingBrokenFlag, dymoRoutingDist } STATUS current DESCRIPTION "Set of DYMO state objects implemented in this module." ::= { dymoMIBGroups 2 } dymoPerfObjectsGroup OBJECT-GROUP OBJECTS { dymoRreqOriginated, dymoRreqForwarded, dymoRreqReceived, dymoRrepOriginated, dymoRrepForwarded, dymoRrepReceived, dymoRrerOriginated, dymoRrerForwarded, dymoRrerReceived, dymoIfRreqOriginated, dymoIfRreqForwarded, dymoIfRreqReceived, dymoIfRrepOriginated, dymoIfRrepForwarded, dymoIfRrepReceived, dymoIfRrerOriginated, dymoIfRrerForwarded, dymoIfRrerReceived } STATUS current DESCRIPTION "Set of DYMO statistic objects implemented in this module for performance management." ::= { dymoMIBGroups 3 } dymoNotifObjectsGroup OBJECT-GROUP OBJECTS { dymoSetNotification } STATUS current DESCRIPTION "Set of DYMO notifications objects implemented in this module." ::= { dymoMIBGroups 4 } dymoNotificationGroup NOTIFICATION-GROUP NOTIFICATIONS { dymoInstanceAdminStatusChange, dymoInterfaceAdminStatusChange, dymoResponsibleAddrEntryChange } STATUS current DESCRIPTION "Set of DYMO notifications implemented in this module." ::= { dymoMIBGroups 5 } END
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[TODO] Each specification that defines one or more MIB modules MUST contain a section that discusses security considerations relevant to those modules. This section MUST be patterned after the latest approved template (available at http://www.ops.ietf.org/mib-security.html). Remember that the objective is not to blindly copy text from the template, but rather to think and evaluate the risks/vulnerabilities and then state/document the result of this evaluation.
[TODO] if you have any read-write and/or read-create objects, please include the following boilerplate paragraph.
There are a number of management objects defined in this MIB module with 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. These are the tables and objects and their sensitivity/vulnerability:
[TODO] else if there are no read-write objects in your MIB module, use the following boilerplate paragraph.
There are no management objects defined in this MIB module that have a MAX-ACCESS clause of read-write and/or read-create. So, if this MIB module is implemented correctly, then there is no risk that an intruder can alter or create any management objects of this MIB module via direct SNMP SET operations.
[TODO] if you have any sensitive readable objects, please include the following boilerplate paragraph.
Some of the readable objects in this MIB module (i.e., objects with a MAX-ACCESS other than not-accessible) may be considered sensitive or vulnerable in some network environments. It is thus important to control even GET and/or NOTIFY access to these objects and possibly to even encrypt the values of these objects when sending them over the network via SNMP. These are the tables and objects and their sensitivity/vulnerability:
[TODO] discuss what security the protocol used to carry the information should have. The following three boilerplate paragraphs should not be changed without very good reason. Changes will almost certainly require justification during IESG review.
SNMP versions prior to SNMPv3 did not include adequate security. 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 module.
It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410] (Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” December 2002.), section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an instance of this MIB module 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.
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[TODO] In order to comply with IESG policy as set forth in http://www.ietf.org/ID-Checklist.html, every Internet-Draft that is submitted to the IESG for publication MUST contain an IANA Considerations section. The requirements for this section vary depending what actions are required of the IANA. see RFC4181 section 3.5 for more information on writing an IANA clause for a MIB module document.
[TODO] select an option and provide the necessary details.
Option #1:
The MIB module in this document uses the following IANA-assigned OBJECT IDENTIFIER values recorded in the SMI Numbers registry: Descriptor OBJECT IDENTIFIER value ---------- ----------------------- sampleMIB { mib-2 XXX }
Option #2:
Editor's Note (to be removed prior to publication): the IANA is requested to assign a value for "XXX" under the 'mib-2' subtree and to record the assignment in the SMI Numbers registry. When the assignment has been made, the RFC Editor is asked to replace "XXX" (here and in the MIB module) with the assigned value and to remove this note.
Note well: prior to official assignment by the IANA, a draft document MUST use place-holders (such as "XXX" above) rather than actual numbers. See RFC4181 Section 4.5 for an example of how this is done in a draft MIB module.
Option #3:
This memo includes no request to IANA.
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This MIB document uses the template authored by D. Harrington which is based on contributions from the MIB Doctors, especially Juergen Schoenwaelder, Dave Perkins, C.M.Heard and Randy Presuhn.
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[RFC3410] | Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” RFC 3410, December 2002 (TXT). |
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This section identifies the changes that have been made from draft-ietf-manet-dymo-mib-00 .
These changes were made from draft-ietf-manet-dymo-mib-00 to draft-ietf-manet-dymo-mib-01.
These changes were made from draft-ietf-manet-dymo-mib-01 to draft-ietf-manet-dymo-mib-02.
These changes were made from draft-ietf-manet-dymo-mib-02 to draft-ietf-manet-dymo-mib-03.
These changes were made from draft-ietf-manet-dymo-mib-03 to draft-ietf-manet-dymo-mib-04.
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This section contains the set of open issues related to the development and design of the DYMO-MIB. This section will not be present in the final version of the MIB and will be removed once all the open issues have been resolved.
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*************************************************************** * Note to the RFC Editor (to be removed prior to publication) * * * * 1) The reference to RFCXXXX within the DESCRIPTION clauses * * of the MIB module point to this draft and are to be * * assigned by the RFC Editor. * * * * 2) The reference to RFCXXX2 throughout this document point * * to the current draft-ietf-manet-dymo-xx.txt. This * * need to be replaced with the XXX RFC number. * * * ***************************************************************
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Sean Harnedy | |
Booz Allen Hamilton | |
333 City Boulevard West | |
Orange, California 92868 | |
USA | |
Phone: | +1 714 938-3898 |
EMail: | harnedy_sean@bah.com |
Robert G. Cole | |
US Army CERDEC | |
328 Hopkins Road, Bldg 245 | |
Aberdeen Proving Ground, Maryland 21005 | |
USA | |
Phone: | +1 410 278 6779 |
EMail: | robert.g.cole@us.army.mil |
URI: | http://www.cs.jhu.edu/~rgcole/ |
Ian D Chakeres | |
CenGen | |
9250 Bendix Road North | |
Columbia, Maryland 21045 | |
USA | |
EMail: | ian.chakeres@gmail.com |
URI: | http://www.ianchak.com/ |