-- extracted from draft-ops-rfc2851-update-00.txt -- at Fri Jul 13 16:40:48 2001 INET-ADDRESS-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, mib-2, Unsigned32 FROM SNMPv2-SMI TEXTUAL-CONVENTION FROM SNMPv2-TC; inetAddressMIB MODULE-IDENTITY LAST-UPDATED "200102220000Z" 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 defines textual conventions for representing Internet addresses. An Internet address can be an IPv4 address, an IPv6 address or a DNS domain name." REVISION "200102220000Z" DESCRIPTION "First revision, published as RFC XXXX. This revisions contains several clarifications and it introduces some new textual conventions: InetAddressPrefixLength, InetPortNumber, and InetAutonomousSystemNumber." REVISION "200006080000Z" DESCRIPTION "Initial version, published as RFC 2851." ::= { mib-2 76 } InetAddressType ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "A value that represents a type of Internet address. unknown(0) An unknown address type. This value MUST be used if the value of the corresponding InetAddress object is a zero-length string. It may also be used to indicate an IP address which is not in one of the formats defined below. ipv4(1) An IPv4 address as defined by the InetAddressIPv4 textual convention. ipv6(2) An IPv6 address as defined by the InetAddressIPv6 textual convention. dns(16) A DNS domain name as defined by the InetAddressDNS textual convention. Each definition of a concrete InetAddressType value must be accompanied by a definition of a textual convention for use with that InetAddressType. The InetAddressType textual convention SHOULD NOT be subtyped in object type definitions to support future extensions. It MAY be subtyped in compliance statements in order to require only a subset of these address types for a compliant implementation." SYNTAX INTEGER { unknown(0), ipv4(1), -- these named numbers are aligned ipv6(2), -- with AddressFamilyNumbers from dns(16) -- IANA-ADDRESS-FAMILY-NUMBERS-MIB } InetAddress ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Denotes a generic Internet address. An InetAddress value is always interpreted within the context of an InetAddressType value. The InetAddressType object which defines the context must be registered immediately before the object which uses the InetAddress textual convention. In other words, the object identifiers for the InetAddressType object and the InetAddress object MUST have the same length and the last sub-identifier of the InetAddressType object MUST be 1 less than the last sub-identifier of the InetAddress object. When this textual convention is used as the 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)) InetAddressIPv4 ::= TEXTUAL-CONVENTION DISPLAY-HINT "1d.1d.1d.1d" STATUS current DESCRIPTION "Represents an IPv4 network address: octets contents encoding 1-4 IP address network-byte order The corresponding InetAddressType value is ipv4(1)." SYNTAX OCTET STRING (SIZE (4)) InetAddressIPv6 ::= TEXTUAL-CONVENTION DISPLAY-HINT "2x:2x:2x:2x:2x:2x:2x:2x%4d" STATUS current DESCRIPTION "Represents an IPv6 network address: octets contents encoding 1-16 IPv6 address network-byte order 17-20 scope identifier network-byte order The corresponding InetAddressType value is ipv6(2). The scope identifier (bytes 17-20) MUST NOT be present for global IPv6 addresses. For non-global IPv6 addresses (e.g. link-local or site-local addresses), the scope identifier MUST be present if there is no other way to disambiguate non-global IPv6 addresses. The scope identifier contains a link identifier for link-local and a site identifier for site-local IPv6 addresses. The scope identifier MUST disambiguate identical address values. For link-local addresses, the scope identifier will typically be the interface index (ifIndex as defined in the IF-MIB, RFC 2863) of the interface on which the address is configured. The scope identifier may contain the special value 0 which refers to the default scope. The default scope may be used in cases where the valid scope identifier is not known (e.g., a management application needs to write a site-local InetAddressIPv6 address without knowing the site identifier value). The default scope SHOULD NOT be used as an easy way out in cases where the scope identifier for a non-global IPv6 address is known." SYNTAX OCTET STRING (SIZE (16|20)) InetAddressDNS ::= TEXTUAL-CONVENTION DISPLAY-HINT "255a" STATUS current DESCRIPTION "Represents a DNS domain name. The name SHOULD be fully qualified whenever possible. The corresponding InetAddressType is dns(16). The DESCRIPTION clause of InetAddress objects that may have InetAddressDNS values must fully describe how (and when) such names are to be resolved to IP addresses." SYNTAX OCTET STRING (SIZE (1..255)) InetAddressPrefixLength ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Denotes the length of a generic Internet network address prefix. A value of n corresponds to an IP address mask which has n contiguous 1-bits from the most significant bit (MSB) and all other bits set to 0. An InetAddressPrefixLength value is always interpreted within the context of an InetAddressType value. The InetAddressType only object or InetAddressType with InetAddress objects which define the context must be registered immediately before the object which uses the InetAddressPrefixLength textual convention. In other words, the object identifiers for the InetAddressType object and the InetAddressPrefixLength object MUST have the same length and the last sub-identifier of the InetAddressType object MUST be 1 less than the last sub-identifier of the InetAddressPrefixLength object and MUST be 2 less than the last sub-identifier of the InetAddressPrefixLength object if an InetAddress object is defined between InetAddressType and InetAddressPrefixLength objects. InetAddressPrefixLength values that are larger than the maximum length of an IP address for a specific InetAddressType are treated as the maximum significant value applicable for the InetAddressType. The maximum significant value is 32 for the InetAddressType 'ipv4(1)' and 128 for the InetAddressType 'ipv6(2)'. The maximum significant value for the InetAddressType 'dns(16)' is 0. The value zero is object-specific and must be defined as part of the description of any object which uses this syntax. Examples of the usage of zero might include situations where the Internet network address prefix is unknown or does not apply." SYNTAX Unsigned32 InetPortNumber ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Represents a 16 bit port number of an Internet transport layer protocol. Port numbers are assigned by IANA. A current list of all assignments is available from . The value zero is object-specific and must be defined as part of the description of any object which uses this syntax. Examples of the usage of zero might include situations where a port number is unknown, or when the value zero is used as a wildcard in a filter." REFERENCE "STD 6 (RFC 768), STD 7 (RFC 793) and RFC 2960" SYNTAX Unsigned32 (0..65535) InetAutonomousSystemNumber ::= TEXTUAL-CONVENTION STATUS current DESCRIPTION "Represents an autonomous system number which identifies an Autonomous System (AS). An AS is a set of routers under a single technical administration, using an interior gateway protocol and common metrics to route packets within the AS, and using an exterior gateway protocol to route packets to other ASs'. IANA maintains the AS number space and has delegated large parts to the regional registries. Autonomous system numbers are currently limited to 16 bits (0..65535). There is however work in progress to enlarge the autonomous system number space to 32 bits. This textual convention therefore uses an Unsigned32 value without a range restriction in order to support a larger autonomous system number space." REFERENCE "RFC 1771, RFC 1930" SYNTAX Unsigned32 END -- -- Copyright (C) The Internet Society (2001). 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