RFC 4295
Mobile IPv6 Management Information Base
Network Working Group G. Keeni Request for Comments: 4295 Cyber Solutions Inc. Category: Standards Track K. Koide Tohoku University K. Nagami INTEC NetCore Inc. S. Gundavelli Cisco Systems Inc. April 2006 Mobile IPv6 Management Information Base Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2006).Abstract
This memo defines a portion of the Management Information Base (MIB), the Mobile-IPv6 MIB, for use with network management protocols in the Internet community. In particular, the Mobile-IPv6 MIB will be used to monitor and control the mobile node, home agent, and correspondent node functions of a Mobile IPv6 (MIPv6) entity.Table of Contents
1. The Internet-Standard Management Framework ......................2 2. Overview ........................................................2 2.1. The Mobile IPv6 Protocol Entities ..........................2 2.2. Terminology ................................................3 3. Mobile IPv6 Monitoring and Control Requirements .................3 4. MIB Design ......................................................4 5. The Mobile-IPv6 MIB .............................................6 6. Security Considerations .......................................104 7. IANA Considerations ...........................................106 8. References ....................................................106 8.1. Normative References .....................................106 8.2. Informative References ...................................107 9. Acknowledgements ..............................................107
1. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. 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], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].2. Overview
2.1. The Mobile IPv6 Protocol Entities
Mobile IPv6 (MIPv6) [RFC3775] specifies a protocol that allows nodes to remain reachable while moving around in the IPv6 Internet. An entity that implements the MIPv6 protocol is a MIPv6 entity. There are three types of entities envisaged by the MIPv6 protocol. mobile node (MN): A node that can change its point of attachment from one link to another, while still being reachable via its home address. correspondent node (CN): A peer node with which a mobile node is communicating. The correspondent node may be either mobile or stationary. (Note that a correspondent node does not necessarily require MIPv6 support.) home agent (HA): A router on a mobile node's home link with which the mobile node has registered its current care-of address. While the mobile node is away from home, the home agent intercepts packets on the home link destined to the mobile node's home address, encapsulates them, and routes them to the mobile node's registered care-of address. This document defines a set of managed objects (MOs) that can be used to monitor and control MIPv6 entities.
2.2. Terminology
The terminology used in this document is consistent with the definitions used in Mobile IPv6 protocol specification [RFC3775]. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14, RFC 2119 [RFC2119].3. Mobile IPv6 Monitoring and Control Requirements
For managing a MIPv6 entity it is necessary to monitor the following: o capabilities of MIPv6 entities o traffic due to MIPv6 o binding-related statistics (at home agent, correspondent node, and mobile node) o binding details (at home agent and correspondent node) o history of Binding Updates (at home agent, correspondent node, and mobile node) The MIPv6 protocol document stipulates that several MIPv6-related parameters should be manually configurable. The MIPv6 MIB should define managed objects that can be used to configure the related parameters, for example: o the preference value the home agent will use in Router Advertisements; o the lifetime value the home agent will use in Router Advertisements; o whether a home agent will send ICMP Mobile Prefix Advertisements to mobile nodes; o whether a home agent will respond to ICMP Mobile Prefix Solicitation messages from mobile nodes; and o whether a home agent will process multicast group membership control messages from mobile nodes.
4. MIB Design
The basic principle has been to keep the MIB as simple as possible and at the same time to make it effective enough so that the essential needs of monitoring and control are met. It is envisaged that wherever possible existing MIBs will be used (e.g., IPSec MIB, Neighbor Discovery MIB, Tunnel MIB [RFC4087]) for monitor and control of MIPv6 entities. It is assumed that the Mobile IPv6 Management Information Base (MOBILEIPV6-MIB) will always be implemented in conjunction with the IPv6-capable version of the IP-MIB [RFC4293]. The MOBILEIPV6-MIB uses the textual conventions defined in the INET-ADDRESS-MIB [RFC4001]. The Mobile-IPv6 MIB is composed of the following groups of definitions: - mip6Core: a generic group containing objects that are common to all the Mobile IPv6 entities. - mip6Ha: this group models the home agent service. It is composed of objects specific to the services and associated advertisement parameters offered by the home agent on each of its links. It also contains objects pertaining to the maintenance of the home agent list on each of the links on which the service is offered. - mip6Mn: this group models the mobile node service. It is composed of objects specific to the Dynamic Home Agent discovery function and related parameters. It also contains objects that record the movement of the mobile node. - mip6Cn: models the correspondent node and is primarily scoped to its participation in the Return Routability procedure for achieving Route Optimization triggered by the mobile node. - mip6Notifications: defines the set of notifications that will be used to asynchronously monitor the Mobile IPv6 entities. The tables contained in the above groups are as follows: mip6BindingCacheTable : models the binding cache on the home agent and correspondent node. It contains details of the Binding Update requests that have been received and accepted. mip6BindingHistoryTable : tracks the history of the binding cache. mip6NodeTrafficTable : the mobile node-wise traffic counters.
mip6MnHomeAddressTable : contains all the home addresses
pertaining to the mobile node and
the corresponding registration status.
mip6MnBLTable : models the Binding Update List on the
mobile node. It contains information
about the registration requests sent
by the mobile node and the
corresponding results.
mip6CnCounterTable : contains the mobile node-wise
registration statistics.
mip6HaConfTable : contains the configurable
advertisement parameters for all the
interfaces on which the home agent
service is advertised.
mip6HaCounterTable : contains registration statistics
for all mobile nodes registered
with the home agent.
mip6HaListTable : contains the list of all routers
that are acting as home agents on
each of the interfaces on which
the home agent service is offered
by this router.
mip6HaGlAddrTable : contains the global addresses of
the home agents.