Network Working Group M. Daniele
Request for Comments: 3419 Consultant
Category: Standards Track J. Schoenwaelder
TU Braunschweig
December 2002

Textual Conventions for Transport Addresses

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 (2002). All Rights Reserved.

Abstract

This document introdUCes a Management Information Base (MIB) module
that defines textual conventions to represent commonly used
transport-layer addressing information. The definitions are
compatible with the concept of TAddress/TDomain pairs introduced by
the Structure of Management Information version 2 (SMIv2) and support
the Internet transport protocols over IPv4 and IPv6.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework . . . . . . . . . 2
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1 Relationship to Other MIBs . . . . . . . . . . . . . . . . . 4
3.1.1 SNMPv2-TC (TAddress, TDomain) . . . . . . . . . . . . . . . 4
3.1.2 SNMPv2-TM . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1.3 INET-ADDRESS-MIB (InetAddressType, InetAddress) . . . . . . 5
4. Definitions . . . . . . . . . . . . . . . . . . . . . . . . 5
5. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . 15
7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 15
8. Intellectual Property Notice . . . . . . . . . . . . . . . . 15
Normative References . . . . . . . . . . . . . . . . . . . . 16
Informative References . . . . . . . . . . . . . . . . . . . 16
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 17
Full Copyright Statement . . . . . . . . . . . . . . . . . . 18

1. Introduction

Several MIB modules need to represent transport-layer addresses in a
generic way. Typical examples are MIBs for application protocols
that can operate over several different transports or application
management MIBs that need to model generic communication endpoints.

The SMIv2 in STD 58, RFC2579 [RFC2579] defines the textual
conventions TDomain and TAddress to represent generic transport layer
endpoints. A generic TAddress value is interpreted in a given
transport domain which is identified by a TDomain value. The TDomain
is an object identifier which allows MIB authors to extend the set of
supported transport domains by providing suitable definitions in
standardized or enterprise specific MIB modules.

An initial set of TDomain values and concrete TAddress formats has
been standardized in STD 62, RFC3417 [RFC3417]. These definitions
are however mixed up with SNMP semantics. Furthermore, definitions
for Internet transport protocols over IPv4 and IPv6 are missing.

The purpose of this memo is to introduce a set of well-known textual
conventions to represent commonly used transport-layer addressing
information which is compatible with the original TDomain and
TAddress approach and which includes definitions for additional
Internet transport protocols over IPv4 and IPv6. This memo also
introduces a new textual convention which enumerates the well-known
transport domains since such an enumeration provides in many cases
sufficient flexibility and is more efficient compared to object
identifiers.

The key Words "MUST", "MUST NOT", "SHOULD", "SHOULD NOT" and "MAY" in
this document are to be interpreted as described in BCP 14, RFC2119
[RFC2119].

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
RFC3410 [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,
RFC2578 [RFC2578], STD 58, RFC2579 [RFC2579] and STD 58, RFC2580
[RFC2580].

3. Overview

This MIB module contains definitions for commonly used transport
layer addressing information. In particular, it provides the
following definitions:

1. Textual conventions for generic transport addresses
(TransportAddress) and generic transport domains
(TransportDomain).

2. Object identifier registrations for well-known transport domains.

3. An enumeration of the well-known transport domains, called a
transport address type (TransportAddressType).

4. A set of textual conventions for the address formats used by
well-known transport domains. The DISPLAY-HINTs are aligned with
the formats used in URIs [RFC2396], [RFC3291].

The textual conventions for well-known transport domains support
scoped Internet addresses. The scope of an Internet address is a
topological span within which the address may be used as a unique
identifier for an interface or set of interfaces. A scope zone, or
simply a zone, is a concrete connected region of topology of a given
scope. Note that a zone is a particular instance of a topological
region, whereas a scope is the size of a topological region [SCOPED].
Since Internet addresses on devices that connect multiple zones are
not necessarily unique, an additional zone index is needed on these
devices to select an interface. The textual conventions
TransportAddressIPv4z and TransportAddressIPv6z are provided to
support Internet transport addresses that include a zone index. In
order to support arbitrary combinations of scoped Internet transport
addresses, MIB authors SHOULD use a separate TransportDomain or
TransportAddressType objects for each TransportAddress object.

There are two different ways how new transport domains and textual
conventions for the address formats used by those new transport
domains can be defined.

1. The MIB module contained in this memo can be updated and new
constants for the TransportDomain and the TransportAddressType
enumeration can be assigned.

2. Other MIB modules may define additional transport domains and
associated textual conventions. Such an extension can not update
the TransportAddressType enumeration.

It is therefore a MIB designers choice whether he uses (a) a more
compact TransportAddressType object with limited extensibility or (b)
a more verbose TransportDomain object which allows arbitrary
extensions in other MIB modules.

The MIB module contained in this memo does NOT define the transport
mappings of any particular protocol. Rather, it defines a set of
common identifiers and textual conventions that are intended to be
used within various transport mappings documents.

3.1 Relationship to Other MIBs

This section discusses how the definitions provided by the MIB module
contained in this memo relate to definitions in other MIB modules.

3.1.1 SNMPv2-TC (TAddress, TDomain)

The SNMPv2-TC MIB module [RFC2579] defines the textual conventions
TAddress and TDomain to represent generic transport addresses.

A TAddress is an octet string with a size between 1 and 255 octets.
EXPerience has shown that there is sometimes a need to represent
unknown transport addresses. The MIB module contained in this memo
therefore introduces a new textual convention TransportAddress which
is an octet string with a size between 0 and 255 octets and otherwise
identical semantics. In other words, the sub-type TransportAddress
(SIZE (1..255)) is identical with the TAddress defined in the
SNMPv2-TC MIB module [RFC2579].

This MIB module also introduces a new textual convention
TransportDomain which is compatible with the TDomain definition so
that a complete set of definitions is contained in a single MIB
module. New MIB modules SHOULD use the generic TransportDomain,
TransportAddressType and TransportAddress definitions defined in this
memo. Existing MIB modules may be updated to use the definitions
provided in this memo by replacing TDomain with TransportDomain and
TAddress with TransportAddress (SIZE (1..255)).

3.1.2 SNMPv2-TM

The transport domain values defined in the SNMPv2-TM MIB module
[RFC3417] all contain "snmp" as the prefix in their name and are
registered under `snmpDomains' (from RFC2578 [RFC2578]). They were
originally intended to describe SNMP transport domains only - but
they were later also used for non-SNMP transport endpoints. These
definitions are also incomplete since new transport address domains
are needed to support (at least) SNMP over UDP over IPv6.

The transport domain values defined in this memo are independent of
the protocol running over the transport-layer and SHOULD be used for
all transport endpoints not carrying SNMP traffic. Programs that
interpret transport domain values should in addition accept the
transport domain values defined in the SNMPv2-TM MIB module in order
to provide interoperability with existing implementations that use
the SNMP specific transport domain values.

Transport endpoints which carry SNMP traffic SHOULD continue to use
the definitions from the SNMPv2-TM MIB module where applicable. They
SHOULD use the transport domain values defined in this memo for SNMP
transports not defined in the SNMPv2-TM MIB module, such as SNMP over
UDP over IPv6. Programs that interpret transport domain values
should in addition accept all the transport domain values defined in
this memo in order to provide interoperability in cases where it is
not possible or desirable to distinguish the protocols running over a
transport endpoint.

3.1.3 INET-ADDRESS-MIB (InetAddressType, InetAddress)

The INET-ADDRESS-MIB MIB module [RFC3291] defines the textual
conventions InetAddressType and InetAddress to represent Internet
network layer endpoints. Some MIB modules use these textual
conventions in conjunction with the InetPortNumber textual convention
to represent Internet transport-layer endpoints. This approach is
fine as long as a MIB models protocols or applications that are
specific to the Internet suite of transport protocols. For protocols
or applications that can potentially use other transport protocols,
the use of the definitions contained in this memo is more
appropriate.

4. Definitions

TRANSPORT-ADDRESS-MIB DEFINITIONS ::= BEGIN

IMPORTS
MODULE-IDENTITY, OBJECT-IDENTITY, mib-2 FROM SNMPv2-SMI
TEXTUAL-CONVENTION FROM SNMPv2-TC;

transportAddressMIB MODULE-IDENTITY
LAST-UPDATED "200211010000Z"
ORGANIZATION
"IETF Operations and Management Area"
CONTACT-INFO
"Juergen Schoenwaelder (Editor)
TU Braunschweig
Bueltenweg 74/75
38106 Braunschweig, Germany

Phone: +49 531 391-3289
EMail: schoenw@ibr.cs.tu-bs.de

Send comments to <mibs@ops.ietf.org>."
DESCRIPTION
"This MIB module provides commonly used transport
address definitions.

Copyright (C) The Internet Society (2002). This version of
this MIB module is part of RFC3419 see the RFCitself for
full legal notices."

-- Revision log

REVISION "200211010000Z"
DESCRIPTION
"Initial version, published as RFC3419."
::= { mib-2 100 }

transportDomains OBJECT IDENTIFIER ::= { transportAddressMIB 1 }

transportDomainUdpIpv4 OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The UDP over IPv4 transport domain. The corresponding
transport address is of type TransportAddressIPv4 for
global IPv4 addresses."
::= { transportDomains 1 }

transportDomainUdpIpv6 OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The UDP over IPv6 transport domain. The corresponding
transport address is of type TransportAddressIPv6 for
global IPv6 addresses."
::= { transportDomains 2 }

transportDomainUdpIpv4z OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The UDP over IPv4 transport domain. The corresponding
transport address is of type TransportAddressIPv4z for
scoped IPv4 addresses with a zone index."
::= { transportDomains 3 }

transportDomainUdpIpv6z OBJECT-IDENTITY
STATUS current

DESCRIPTION
"The UDP over IPv6 transport domain. The corresponding
transport address is of type TransportAddressIPv6z for
scoped IPv6 addresses with a zone index."
::= { transportDomains 4 }

transportDomainTcpIpv4 OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The TCP over IPv4 transport domain. The corresponding
transport address is of type TransportAddressIPv4 for
global IPv4 addresses."
::= { transportDomains 5 }

transportDomainTcpIpv6 OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The TCP over IPv6 transport domain. The corresponding
transport address is of type TransportAddressIPv6 for
global IPv6 addresses."
::= { transportDomains 6 }

transportDomainTcpIpv4z OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The TCP over IPv4 transport domain. The corresponding
transport address is of type TransportAddressIPv4z for
scoped IPv4 addresses with a zone index."
::= { transportDomains 7 }

transportDomainTcpIpv6z OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The TCP over IPv6 transport domain. The corresponding
transport address is of type TransportAddressIPv6z for
scoped IPv6 addresses with a zone index."
::= { transportDomains 8 }

transportDomainSctpIpv4 OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The SCTP over IPv4 transport domain. The corresponding
transport address is of type TransportAddressIPv4 for
global IPv4 addresses. This transport domain usually
represents the primary address on multihomed SCTP
endpoints."
::= { transportDomains 9 }

transportDomainSctpIpv6 OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The SCTP over IPv6 transport domain. The corresponding
transport address is of type TransportAddressIPv6 for
global IPv6 addresses. This transport domain usually
represents the primary address on multihomed SCTP
endpoints."
::= { transportDomains 10 }

transportDomainSctpIpv4z OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The SCTP over IPv4 transport domain. The corresponding
transport address is of type TransportAddressIPv4z for
scoped IPv4 addresses with a zone index. This transport
domain usually represents the primary address on
multihomed SCTP endpoints."
::= { transportDomains 11 }

transportDomainSctpIpv6z OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The SCTP over IPv6 transport domain. The corresponding
transport address is of type TransportAddressIPv6z for
scoped IPv6 addresses with a zone index. This transport
domain usually represents the primary address on
multihomed SCTP endpoints."
::= { transportDomains 12 }

transportDomainLocal OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The Posix Local IPC transport domain. The corresponding
transport address is of type TransportAddressLocal.

The Posix Local IPC transport domain incorporates the
well-known UNIX domain sockets."
::= { transportDomains 13 }

transportDomainUdpDns OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The UDP transport domain using fully qualified domain
names. The corresponding transport address is of type
TransportAddressDns."
::= { transportDomains 14 }

transportDomainTcpDns OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The TCP transport domain using fully qualified domain
names. The corresponding transport address is of type
TransportAddressDns."
::= { transportDomains 15 }

transportDomainSctpDns OBJECT-IDENTITY
STATUS current
DESCRIPTION
"The SCTP transport domain using fully qualified domain
names. The corresponding transport address is of type
TransportAddressDns."
::= { transportDomains 16 }

TransportDomain ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A value that represents a transport domain.

Some possible values, such as transportDomainUdpIpv4, are
defined in this module. Other possible values can be
defined in other MIB modules."
SYNTAX OBJECT IDENTIFIER

--
-- The enumerated values of the textual convention below should
-- be identical to the last sub-identifier of the OID registered
-- for the same domain.
--

TransportAddressType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A value that represents a transport domain. This is the
enumerated version of the transport domain registrations
in this MIB module. The enumerated values have the
following meaning:

unknown(0) unknown transport address type
udpIpv4(1) transportDomainUdpIpv4
udpIpv6(2) transportDomainUdpIpv6
udpIpv4z(3) transportDomainUdpIpv4z
udpIpv6z(4) transportDomainUdpIpv6z
tcpIpv4(5) transportDomainTcpIpv4
tcpIpv6(6) transportDomainTcpIpv6
tcpIpv4z(7) transportDomainTcpIpv4z

tcpIpv6z(8) transportDomainTcpIpv6z
sctpIpv4(9) transportDomainSctpIpv4
sctpIpv6(10) transportDomainSctpIpv6
sctpIpv4z(11) transportDomainSctpIpv4z
sctpIpv6z(12) transportDomainSctpIpv6z
local(13) transportDomainLocal
udpDns(14) transportDomainUdpDns
tcpDns(15) transportDomainTcpDns
sctpDns(16) transportDomainSctpDns

This textual convention can be used to represent transport
domains in situations where a syntax of TransportDomain is
unwieldy (for example, when used as an index).

The usage of this textual convention implies that additional
transport domains can only be supported by updating this MIB
module. This extensibility restriction does not apply for the
TransportDomain textual convention which allows MIB authors
to define additional transport domains independently in
other MIB modules."
SYNTAX INTEGER {
unknown(0),
udpIpv4(1),
udpIpv6(2),
udpIpv4z(3),
udpIpv6z(4),
tcpIpv4(5),
tcpIpv6(6),
tcpIpv4z(7),
tcpIpv6z(8),
sctpIpv4(9),
sctpIpv6(10),
sctpIpv4z(11),
sctpIpv6z(12),
local(13),
udpDns(14),
tcpDns(15),
sctpDns(16)
}

TransportAddress ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"Denotes a generic transport address.

A TransportAddress value is always interpreted within the
context of a TransportAddressType or TransportDomain value.
Every usage of the TransportAddress textual convention MUST

specify the TransportAddressType or TransportDomain object
which provides the context. Furthermore, MIB authors SHOULD
define a separate TransportAddressType or TransportDomain
object for each TransportAddress object. It is suggested that
the TransportAddressType or TransportDomain is logically
registered before the object(s) which use the
TransportAddress textual convention if they appear in the
same logical row.

The value of a TransportAddress object must always be
consistent with the value of the associated
TransportAddressType or TransportDomain object. Attempts
to set a TransportAddress object to a value which is
inconsistent with the associated TransportAddressType or
TransportDomain must fail with an inconsistentValue error.

When this textual convention is used as a syntax of an
index object, there may be issues with the limit of 128
sub-identifiers specified in SMIv2, STD 58. In this case,
the OBJECT-TYPE declaration MUST include a 'SIZE' clause
to limit the number of potential instance sub-identifiers."
SYNTAX OCTET STRING (SIZE (0..255))

TransportAddressIPv4 ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1d.1d.1d.1d:2d"
STATUS current
DESCRIPTION
"Represents a transport address consisting of an IPv4
address and a port number (as used for example by UDP,
TCP and SCTP):

octets contents encoding
1-4 IPv4 address network-byte order
5-6 port number network-byte order

This textual convention SHOULD NOT be used directly in object
definitions since it restricts addresses to a specific format.
However, if it is used, it MAY be used either on its own or
in conjunction with TransportAddressType or TransportDomain
as a pair."
SYNTAX OCTET STRING (SIZE (6))

TransportAddressIPv6 ::= TEXTUAL-CONVENTION
DISPLAY-HINT "0a[2x:2x:2x:2x:2x:2x:2x:2x]0a:2d"
STATUS current
DESCRIPTION
"Represents a transport address consisting of an IPv6
address and a port number (as used for example by UDP,

TCP and SCTP):

octets contents encoding
1-16 IPv6 address network-byte order
17-18 port number network-byte order

This textual convention SHOULD NOT be used directly in object
definitions since it restricts addresses to a specific format.
However, if it is used, it MAY be used either on its own or
in conjunction with TransportAddressType or TransportDomain
as a pair."
SYNTAX OCTET STRING (SIZE (18))

TransportAddressIPv4z ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1d.1d.1d.1d%4d:2d"
STATUS current
DESCRIPTION
"Represents a transport address consisting of an IPv4
address, a zone index and a port number (as used for
example by UDP, TCP and SCTP):

octets contents encoding
1-4 IPv4 address network-byte order
5-8 zone index network-byte order
9-10 port number network-byte order

This textual convention SHOULD NOT be used directly in object
definitions since it restricts addresses to a specific format.
However, if it is used, it MAY be used either on its own or
in conjunction with TransportAddressType or TransportDomain
as a pair."
SYNTAX OCTET STRING (SIZE (10))

TransportAddressIPv6z ::= TEXTUAL-CONVENTION
DISPLAY-HINT "0a[2x:2x:2x:2x:2x:2x:2x:2x%4d]0a:2d"
STATUS current
DESCRIPTION
"Represents a transport address consisting of an IPv6
address, a zone index and a port number (as used for
example by UDP, TCP and SCTP):

octets contents encoding
1-16 IPv6 address network-byte order
17-20 zone index network-byte order
21-22 port number network-byte order

This textual convention SHOULD NOT be used directly in object
definitions since it restricts addresses to a specific format.

However, if it is used, it MAY be used either on its own or
in conjunction with TransportAddressType or TransportDomain
as a pair."
SYNTAX OCTET STRING (SIZE (22))

TransportAddressLocal ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1a"
STATUS current
DESCRIPTION
"Represents a POSIX Local IPC transport address:

octets contents encoding
all POSIX Local IPC address string

The Posix Local IPC transport domain subsumes UNIX domain
sockets.

This textual convention SHOULD NOT be used directly in object
definitions since it restricts addresses to a specific format.
However, if it is used, it MAY be used either on its own or
in conjunction with TransportAddressType or TransportDomain
as a pair.

When this textual convention is used as a syntax of an
index object, there may be issues with the limit of 128
sub-identifiers specified in SMIv2, STD 58. In this case,
the OBJECT-TYPE declaration MUST include a 'SIZE' clause
to limit the number of potential instance sub-identifiers."
REFERENCE
"Protocol Independent Interfaces (IEEE POSIX 1003.1g)"
SYNTAX OCTET STRING (SIZE (1..255))

TransportAddressDns ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1a"
STATUS current
DESCRIPTION
"Represents a DNS domain name followed by a colon ':'
(ASCII character 0x3A) and a port number in ASCII.
The name SHOULD be fully qualified whenever possible.

Values of this textual convention are not directly useable as
transport-layer addressing information, and require runtime
resolution. As such, applications that write them must be
prepared for handling errors if such values are not
supported, or cannot be resolved (if resolution occurs at the
time of the management operation).

The DESCRIPTION clause of TransportAddress objects that may

have TransportAddressDns values must fully describe how (and
when) such names are to be resolved to IP addresses and vice
versa.

This textual convention SHOULD NOT be used directly in object
definitions since it restricts addresses to a specific format.
However, if it is used, it MAY be used either on its own or
in conjunction with TransportAddressType or TransportDomain
as a pair.

When this textual convention is used as a syntax of an
index object, there may be issues with the limit of 128
sub-identifiers specified in SMIv2, STD 58. In this case,
the OBJECT-TYPE declaration MUST include a 'SIZE' clause
to limit the number of potential instance sub-identifiers."
SYNTAX OCTET STRING (SIZE (1..255))

END

5. Examples

This section shows some examples how transport addresses are encoded
and rendered using some of the transport address definitions.

Description: Unspecified IPv4 address on port 80.
Encoding (hex): 000000000050
Display: 0.0.0.0:80

Description: Global IPv4 address on port 80.
Encoding (hex): 86A922010050
Display: 134.169.34.1:80

Description: Unspecified IPv6 address on port 80.
Encoding (hex): 000000000000000000000000000000000050
Display: [0:0:0:0:0:0:0:0]:80

Description: Global IPv6 address on port 80.
Encoding (hex): 108000000000000000080800200C417A0050
Display: [1080:0:0:0:8:800:200C:417A]:80

Description: Link-local IPv6 address with zone-index 42 on port 80.
Encoding (hex): FE8000000000000000010000000002000000002A0050
Display: [FE80:0:0:0:1:0:0:200%42]:80

Description: Posix Local IPC address (UNIX domain).
Encoding (hex): 2F7661722F6167656E74782F6D6173746572
Display: /var/agentx/master

Description: Fully qualified domain name on port 80.
Encoding (hex): 7777772E6578616D706C652E6E65743A3830
Display: www.example.net:80

6. Security Considerations

The MIB module contained in this memo does not define any management
objects. Instead, it defines a set of textual conventions which may
be used by other MIB modules to define management objects.

Meaningful security considerations can only be written for MIB
modules that define concrete management objects. This document has
therefore no impact on the security of the Internet.

7. Acknowledgments

This document was produced by the Operations and Management Area
"IPv6MIB" design team. The authors would like to thank Mark Ellison,
Brian Haberman, Mike Heard, Glenn Mansfield Keeni, Erik Nordmark,
Shawn A. Routhier, Bill Strahm, Dave Thaler and Bert Wijnen for their
comments and suggestions.

8. Intellectual Property Notice

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.

Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC2119, 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, RFC2578, April
1999.

[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Textual Conventions for
SMIv2", STD 58, RFC2579, April 1999.

[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
Rose, M. and S. Waldbusser, "Conformance Statements for
SMIv2", STD 58, RFC2580, April 1999.

[RFC3417] Presuhn, R., Case, J., McCloghrie, K., Rose, M. and S.
Waldbusser, "Transport Mappings for the Simple Network
Management Protocol (SNMP)", STD 62, RFC3417, December
2002.

Informative References

[SCOPED] Deering, S., Haberman, B., Jinmei, T., Nordmark, E., Onoe,
A. and B. Zill, "IPv6 Scoped Address Architecture", Work in
Progress.

[RFC2396] Berners-Lee, T., Fielding, R. and L. Masinter, "Uniform
Resource Identifiers (URI): Generic Syntax", RFC2396,
August 1998.

[RFC2732] Hinden, R., Carpenter, B. and L. Masinter, "Format for
Literal IPv6 Addresses in URL's", RFC2732, August 1998.

[RFC3291] Daniele, M., Haberman, B., Routhier, S. and J.
Schoenwaelder, "Textual Conventions for Internet Network
Addresses", RFC3291, December 2001.

[RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC3410, December 2002.

Authors' Addresses

Mike Daniele
Consultant
19 Pinewood Rd
Hudson, NH 03051
USA

Phone: +1 603 883-6365
EMail: md@world.std.com

Juergen Schoenwaelder
TU Braunschweig
Bueltenweg 74/75
38106 Braunschweig
Germany

Phone: +49 531 391-3289
EMail: schoenw@ibr.cs.tu-bs.de

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