Mobility for IPv4 Working Group Hans Sjostrand
Internet Draft Transmode
Intended status: Proposed standard February 23, 2009
The Definitions of Managed Objects for
Mobile IP UDP Tunneling
draft-ietf-mip4-udptunnel-mib-02
Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79.
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
This Internet-Draft will expire on August 23, 2009.
Copyright Notice
Copyright (c) 2009 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 in effect on the date of
publication of this document (http://trustee.ietf.org/licenseinfo).
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document.
Sjostrand Expires August 23, 2009 [Page 1]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
Abstract
This memo defines the Management Information Base (MIB) for use with
network management protocols in TCP/IP-based internets. In
particular, it describes managed objects used for managing the Mobile
Node, Foreign Agent and Home Agent when Mobile IP Traversal of
Network Address Translation (NAT) Devices are used.
Table of Contents
1. Introduction...................................................3
2. The Internet-Standard Management Framework.....................3
3. Conventions....................................................3
4. Structure of the MIB...........................................3
4.1. Structure of the Mobile IP UDP Tunneling..................3
4.2. MIB Groups................................................4
5. Mobile IP UDP Tunnel MIB Definitions...........................5
6. Security Considerations.......................................11
7. IANA Considerations...........................................11
8. References....................................................12
8.1. Normative References.....................................12
8.2. Informative References...................................12
APPENDIX A: Changes in draft versions............................13
A.1. Changes in draft-ietf-mip4-udptunnel-mib-00..............13
A.2. Changes in draft-ietf-mip4-udptunnel-mib-02..............13
Author's Address.................................................14
Sjostrand Expires August 23, 2007 [Page 2]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
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 describes managed objects used for managing the
Mobile Node, Foreign Agent and Home Agent when Mobile IP Traversal of
Network Address Translation (NAT) Devices are used.
2. 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].
3. Conventions
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 RFC2119 [RFC2119].
4. Structure of the MIB
This memo defines a portion of the Management Information Base (MIB)
for the use with network management protocols in the Internet
community. In particular, it describes managed objects for the
Mobile IP Traversal of Network Address Translation (NAT) Devices as
defined in [RFC3519].
4.1. Structure of the Mobile IP UDP Tunneling
The Mobile IP Traversal of Network Address Translation (NAT) Devices
specification [RFC3519] specifies a few managed entities. These are
the behavior to force and accept udp tunneling, and the configuration
of the keepalive timers.
The Mobile IP Traversal of Network Address Translation (NAT) Devices
specification [RFC3519] also specifies a new error code for
Sjostrand Expires August 23, 2007 [Page 3]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
"Requested UDP tunnel encapsulation unavailable". Therefore a counter
object for this error code is also included in this mib module.
Further, it's good practice to include object to enable and disable
the MIP UDP tuning completely.
Configuration of MIP UDP tunneling has been deployed in various
vendor implementations for years. Field experience have shown that
it's indeed a good idea to always use UDP tunneling instead if the
original Mobile IP tunneling methods. Therefore, an object is added
in the HA to always force the use of UDP tunneling to all UDP
tunneling capable nodes, regardless of F-flag or outcome of NAT test.
4.2. MIB Groups
Objects in this MIB are arranged into groups. Each group is related
to the Mobile IP entities Mobile Node, Foreign Agent and Home Agent.
The Mobile IP entities Mobile Node, Foreign Agent and Home Agent are
described in [RFC3344].
The managed objects in this document extend the management of the
Mobile IP entities Mobile Node, Foreign Agent and Home Agent as
described in [I-D.ietf-mip4-rfc2006bis].
Sjostrand Expires August 23, 2007 [Page 4]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
5. Mobile IP UDP Tunnel MIB Definitions
MIP-UDPTUNNEL-MIB DEFINITIONS ::= BEGIN
IMPORTS
Counter32, Unsigned32, MODULE-IDENTITY,
OBJECT-TYPE, mib-2
FROM SNMPv2-SMI -- [RFC2578]
TruthValue
FROM SNMPv2-TC -- [RFC2579]
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF; -- [RFC2580]
mipUdpTunnelMIB MODULE-IDENTITY
LAST-UPDATED "200902230000Z"
ORGANIZATION "IETF Mobility for IPv4 Group"
CONTACT-INFO
"Hans Sjostrand
Transmode
hans.sjostrand@transmode.com
Comments about this document should be emailed
directly to the Mip4 working group mailing list at
mip4@ietf.org"
DESCRIPTION
"The MIB module for configuring and displaying Mobile
IP Traversal of Network Address Translation (NAT)
Devices information.
Copyright (C) IETF Trust (2009). This version
of this MIB module is part of RFC yyyy; see the RFC
itself for full legal notices."
REVISION "200902230000Z"
DESCRIPTION
"Initial version issued as part of RFC yyyy."
-- RFC Ed.: replace yyyy with actual RFC number & remove this note
::= { mib-2 XXX }
-- RFC Ed.: replace XXX with IANA-assigned number & remove this note
mipUdpTunnelMIBObjects OBJECT IDENTIFIER ::= { mipUdpTunnelMIB 1 }
mnUdpTunnel OBJECT IDENTIFIER ::= { mipUdpTunnelMIBObjects 1 }
haUdpTunnel OBJECT IDENTIFIER ::= { mipUdpTunnelMIBObjects 2 }
faUdpTunnel OBJECT IDENTIFIER ::= { mipUdpTunnelMIBObjects 3 }
Sjostrand Expires August 23, 2007 [Page 5]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
-- =================================================================
-- mnUdpTunnel Group
mnUdpTunnelEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter enables and disables the RFC 3519 UDP
tunneling function in the MN completely."
DEFVAL { true }
::= { mnUdpTunnel 1 }
mnUdpTunnelForce OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter enables (or disables) the MN to set
the F (force) flag. It indicates that the mobile
node wants to use traversal regardless of the
outcome of NAT detection performed by the home agent."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 3.1.1"
DEFVAL { false }
::= { mnUdpTunnel 2 }
mnUdpTunnelKeepaliveInterval OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Defines the default NAT keepalive interval that the
mobile node will use in the case that the HA does
not impose another value by setting the Keepalive
Interval in the UDP Tunnel Reply Extension."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 4.9"
DEFVAL { 110 }
::= { mnUdpTunnel 3 }
-- =================================================================
-- haUdpTunnel Group
Sjostrand Expires August 23, 2007 [Page 6]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
haUdpTunnelEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter enables and disables the RFC 3519 UDP
tunneling function in the HA completely."
DEFVAL { true }
::= { haUdpTunnel 1 }
haUdpTunnelKeepaliveInterval OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter sets the keepalive interval override.
Normally, the MN uses the keepalive time that was
configured using UDP tunneling and sending
keepalive messages. The HA can override this
configured keepalive time by setting a new
interval value for this parameter to a value other
than zero."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 3.2"
DEFVAL { 0 }
::= { haUdpTunnel 2 }
haUdpTunnelForce OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter enables and disables the HA forcing all
connections from MNs which support RFC 3519 UDP
tunneling to use tunneling whether or not the
presence of a NAT is detected."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 6.3"
DEFVAL { false }
::= { haUdpTunnel 3 }
haUdpTunnelEncapUnavail OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
Sjostrand Expires August 23, 2007 [Page 7]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
DESCRIPTION
"Total number of Registration Requests denied by the
home agent -- Requested UDP tunnel encapsulation
unavailable (code 142)."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 3.5"
::= { haUdpTunnel 4 }
-- =================================================================
-- faUdpTunnel Group
faUdpTunnelEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter enables and disables the RFC 3519 UDP
tunneling function in the FA completely."
DEFVAL { true }
::= { faUdpTunnel 1 }
faUdpTunnelForce OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This parameter enables (or disables) the FA to set
the F (force) flag. It indicates that the foreign
agent wants to use traversal regardless of the
outcome of NAT detection performed by the home agent."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 3.1.1"
DEFVAL { false }
::= { faUdpTunnel 2 }
faUdpTunnelKeepaliveInterval OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Defines the default NAT keepalive interval that the
foreign agent will use in the case that the HA does
not impose another value by setting the Keepalive
Interval in the UDP Tunnel Reply Extension."
REFERENCE
"RFC3519, MIP Traversal of NAT Devices, Section 4.9"
Sjostrand Expires August 23, 2007 [Page 8]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
DEFVAL { 110 }
::= { faUdpTunnel 3 }
-- =================================================================
-- MIP Conformance Statements
mipUdpTunnelConformance
OBJECT IDENTIFIER ::= { mipUdpTunnelMIB 2 }
mipUdpTunnelGroups
OBJECT IDENTIFIER ::= { mipUdpTunnelConformance 1 }
mipUdpTunnelCompliances
OBJECT IDENTIFIER ::= { mipUdpTunnelConformance 2 }
--
-- compliance statements
--
mipUdpTunnelCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMPv2 entities which
implement the Mobile IP UDP Tunnel MIB."
MODULE
GROUP mnUdpTunnelGroup
DESCRIPTION
"This group is mandatory for a mobile node."
GROUP haUdpTunnelGroup
DESCRIPTION
"This group is mandatory for a home agent."
GROUP faUdpTunnelGroup
DESCRIPTION
"This group is mandatory for a foreign agent."
::= { mipUdpTunnelCompliances 1 }
--
-- Units of conformance
--
mnUdpTunnelGroup OBJECT-GROUP
OBJECTS { mnUdpTunnelEnable, mnUdpTunnelForce,
Sjostrand Expires August 23, 2007 [Page 9]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
mnUdpTunnelKeepaliveInterval }
STATUS current
DESCRIPTION
"A collection of objects providing management
information for theuse of UDP tunneling according to
RFC3519 within a mobile node."
::= { mipUdpTunnelGroups 1 }
haUdpTunnelGroup OBJECT-GROUP
OBJECTS { haUdpTunnelEnable, haUdpTunnelForce,
haUdpTunnelKeepaliveInterval,
haUdpTunnelEncapUnavail }
STATUS current
DESCRIPTION
"A collection of objects providing management
information for theuse of UDP tunneling according to
RFC3519 within a home agent."
::= { mipUdpTunnelGroups 2 }
faUdpTunnelGroup OBJECT-GROUP
OBJECTS { faUdpTunnelEnable, faUdpTunnelForce,
faUdpTunnelKeepaliveInterval }
STATUS current
DESCRIPTION
"A collection of objects providing management
information for theuse of UDP tunneling according to
RFC3519 within a foreign agent."
::= { mipUdpTunnelGroups 3 }
END
Sjostrand Expires August 23, 2007 [Page 10]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
6. Security Considerations
Assuming that secure network management (such as SNMP v3) is
implemented, the objects represented in this MIB do not pose a threat
to the security of the network.
There are a number of management objects defined in this MIB that
have a MAX-ACCESS clause of read-write. 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.
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], 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.
7. IANA Considerations
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.
Note to RFC Editor. When the assignment has been made, the RFC Editor
is asked to replace "XXX" in this document with the assigned value
(here and in the MIB module) and to remove this note.
Sjostrand Expires August 23, 2007 [Page 11]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
8. References
8.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Structure of Management
Information Version 2 (SMIv2)", STD 58, RFC 2578, April
1999.
[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Textual Conventions for
SMIv2", STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Conformance Statements for
SMIv2", STD 58, RFC 2580, April 1999.
[RFC3344] Perkins, C., "IP Mobility Support for IPv4", RFC 3344,
August 2002.
[RFC3519] H. Levkowetz and S. Vaarala, "Mobile IP Traversal of
Network Address Translation (NAT) Devices", RFC 3519, April
2003
[I-D.ietf-mip4-rfc2006bis] K. Leung, R. Rathi and H. Sjostrand, "The
Definitions of Managed Objects for IP Mobility Support
using SMIv2, revised", Work in progress
8.2. Informative References
[RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
Sjostrand Expires August 23, 2007 [Page 12]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
APPENDIX A: Changes in draft versions
Note to RFC Editor. At time of publication, this appendix should be
removed.
A.1. Changes in draft-ietf-mip4-udptunnel-mib-00
Changes compared with draft-sjostrand-mip4-udptunnel-mib-01 which was
accepted as WG doc in Prague March 21, 2007.
- Minor boilerplate updates, date changes, version numbers, speling
errors etc.
- Added reference clauses to RFC3519 where applicable
- Removed "haUdpTunnelPermitMnForce". It was meant to provide
configuration to an ambiguous SHOULD in RFC3519, section 3.1.1 but I
think it created more ambiguity than it clarified.
- Clarified that IANA shall handle mipMIB OID, in
http://www.iana.org/assignments/smi-numbers. IANA considerations
chapter written and open issue about OID placement removed.
A.2. Changes in draft-ietf-mip4-udptunnel-mib-02
Changes compared with draft-ietf-mip4-udptunnel-mib-01 (which just
had editorial updates compared with the 00-version).
- Changed OID root from {mipMIB X} to {mib-2 XXX} according to
RFC4181 recommendations. And updated IANA considerations accordingly.
- Updated boilerplate according to "Legal Provisions Relating to IETF
Documents" from IETF Trust
- Removed open issue about default values, the values has been like
this now for 2 years and no other suggestions have been made.
- Updated contact data.
Sjostrand Expires August 23, 2007 [Page 13]
Internet-Draft Mobile IP UDP Tunneling MIB February 2009
Author's Address
Hans Sjostrand
Transmode
Jakobsdalsvagen 17
126 53 Hagersten
Sweden
Phone: +46 8 410 88 000
Email: hans.sjostrand@transmode.com
Acknowledgment
Funding for the RFC Editor function is currently provided by the IETF
Administrative Support Activity (IASA).
Sjostrand Expires August 23, 2007 [Page 14]
