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Network Working Group                                         M. DanieleRequest for Comments: 3419                                    ConsultantCategory: Standards Track                               J. Schoenwaelder                                                         TU Braunschweig                                                           December 2002Textual Conventions for Transport AddressesStatus 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 Contents1.    Introduction . . . . . . . . . . . . . . . . . . . . . . . .22.    The Internet-Standard Management Framework . . . . . . . . .23.    Overview . . . . . . . . . . . . . . . . . . . . . . . . . .33.1   Relationship to Other MIBs . . . . . . . . . . . . . . . . .43.1.1 SNMPv2-TC (TAddress, TDomain)  . . . . . . . . . . . . . . .43.1.2 SNMPv2-TM  . . . . . . . . . . . . . . . . . . . . . . . . .43.1.3 INET-ADDRESS-MIB (InetAddressType, InetAddress)  . . . . . .54.    Definitions  . . . . . . . . . . . . . . . . . . . . . . . .55.    Examples . . . . . . . . . . . . . . . . . . . . . . . . . .146.    Security Considerations  . . . . . . . . . . . . . . . . . .157.    Acknowledgments  . . . . . . . . . . . . . . . . . . . . . .158.    Intellectual Property Notice . . . . . . . . . . . . . . . .15         Normative References . . . . . . . . . . . . . . . . . . . .16         Informative References . . . . . . . . . . . . . . . . . . .16         Authors' Addresses . . . . . . . . . . . . . . . . . . . . .17         Full Copyright Statement . . . . . . . . . . . . . . . . . .18Daniele & Schoenwaelder     Standards Track                     [Page 1]

RFC 3419      Textual Conventions for Transport Addresses  December 20021. 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,RFC 2579 [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,RFC 3417 [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 inBCP 14,RFC 2119   [RFC2119].2. The Internet-Standard Management Framework   For a detailed overview of the documents that describe the current   Internet-Standard Management Framework, please refer tosection 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].Daniele & Schoenwaelder     Standards Track                     [Page 2]

RFC 3419      Textual Conventions for Transport Addresses  December 20023. 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.Daniele & Schoenwaelder     Standards Track                     [Page 3]

RFC 3419      Textual Conventions for Transport Addresses  December 2002   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' (fromRFC 2578 [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.Daniele & Schoenwaelder     Standards Track                     [Page 4]

RFC 3419      Textual Conventions for Transport Addresses  December 2002   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. DefinitionsTRANSPORT-ADDRESS-MIB DEFINITIONS ::= BEGINIMPORTS    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, GermanyDaniele & Schoenwaelder     Standards Track                     [Page 5]

RFC 3419      Textual Conventions for Transport Addresses  December 2002         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 ofRFC 3419; see the RFC itself for         full legal notices."    -- Revision log    REVISION    "200211010000Z"    DESCRIPTION        "Initial version, published asRFC 3419."    ::= { 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      currentDaniele & Schoenwaelder     Standards Track                     [Page 6]

RFC 3419      Textual Conventions for Transport Addresses  December 2002    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 }Daniele & Schoenwaelder     Standards Track                     [Page 7]

RFC 3419      Textual Conventions for Transport Addresses  December 2002transportDomainSctpIpv6 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 }Daniele & Schoenwaelder     Standards Track                     [Page 8]

RFC 3419      Textual Conventions for Transport Addresses  December 2002transportDomainTcpDns 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)    transportDomainTcpIpv4zDaniele & Schoenwaelder     Standards Track                     [Page 9]

RFC 3419      Textual Conventions for Transport Addresses  December 2002         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 MUSTDaniele & Schoenwaelder     Standards Track                    [Page 10]

RFC 3419      Textual Conventions for Transport Addresses  December 2002         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,Daniele & Schoenwaelder     Standards Track                    [Page 11]

RFC 3419      Textual Conventions for Transport Addresses  December 2002         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.Daniele & Schoenwaelder     Standards Track                    [Page 12]

RFC 3419      Textual Conventions for Transport Addresses  December 2002         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 mayDaniele & Schoenwaelder     Standards Track                    [Page 13]

RFC 3419      Textual Conventions for Transport Addresses  December 2002         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))END5. 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):   000000000050Display:          0.0.0.0:80Description:      Global IPv4 address on port 80.Encoding (hex):   86A922010050Display:          134.169.34.1:80Description:      Unspecified IPv6 address on port 80.Encoding (hex):   000000000000000000000000000000000050Display:          [0:0:0:0:0:0:0:0]:80Description:      Global IPv6 address on port 80.Encoding (hex):   108000000000000000080800200C417A0050Display:          [1080:0:0:0:8:800:200C:417A]:80Description:      Link-local IPv6 address with zone-index 42 on port 80.Encoding (hex):   FE8000000000000000010000000002000000002A0050Display:          [FE80:0:0:0:1:0:0:200%42]:80Description:      Posix Local IPC address (UNIX domain).Encoding (hex):   2F7661722F6167656E74782F6D6173746572Display:          /var/agentx/masterDaniele & Schoenwaelder     Standards Track                    [Page 14]

RFC 3419      Textual Conventions for Transport Addresses  December 2002Description:      Fully qualified domain name on port 80.Encoding (hex):   7777772E6578616D706C652E6E65743A3830Display:          www.example.net:806. 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 inBCP-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.Daniele & Schoenwaelder     Standards Track                    [Page 15]

RFC 3419      Textual Conventions for Transport Addresses  December 2002Normative 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.   [RFC3417] Presuhn, R., Case, J., McCloghrie, K., Rose, M. and S.             Waldbusser, "Transport Mappings for the Simple Network             Management Protocol (SNMP)", STD 62,RFC 3417, 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",RFC 2396,             August 1998.   [RFC2732] Hinden, R., Carpenter, B. and L. Masinter, "Format for             Literal IPv6 Addresses in URL's",RFC 2732, August 1998.   [RFC3291] Daniele, M., Haberman, B., Routhier, S. and J.             Schoenwaelder, "Textual Conventions for Internet Network             Addresses",RFC 3291, December 2001.   [RFC3410] Case, J., Mundy, R., Partain, D. and B. Stewart,             "Introduction and Applicability Statements for Internet-             Standard Management Framework",RFC 3410, December 2002.Daniele & Schoenwaelder     Standards Track                    [Page 16]

RFC 3419      Textual Conventions for Transport Addresses  December 2002Authors' 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.deDaniele & Schoenwaelder     Standards Track                    [Page 17]

RFC 3419      Textual Conventions for Transport Addresses  December 2002Full Copyright Statement   Copyright (C) The Internet Society (2002).  All Rights Reserved.   This document and translations of it may be copied and furnished to   others, and derivative works that comment on or otherwise explain it   or assist in its implementation may be prepared, copied, published   and distributed, in whole or in part, without restriction of any   kind, provided that the above copyright notice and this paragraph are   included on all such copies and derivative works.  However, this   document itself may not be modified in any way, such as by removing   the copyright notice or references to the Internet Society or other   Internet organizations, except as needed for the purpose of   developing Internet standards in which case the procedures for   copyrights defined in the Internet Standards process must be   followed, or as required to translate it into languages other than   English.   The limited permissions granted above are perpetual and will not be   revoked by the Internet Society or its successors or assigns.   This document and the information contained herein is provided on an   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.Acknowledgement   Funding for the RFC Editor function is currently provided by the   Internet Society.Daniele & Schoenwaelder     Standards Track                    [Page 18]

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