RFC 2454 (rfc2454) - Page 2 of 9
IP Version 6 Management Information Base for the User Datagram Protocol
Alternative Format: Original Text Document
RFC 2454 UDP MIB for IPv6 December 1998
Management stations execute management applications which monitor and
control managed elements. Managed elements are devices such as
hosts, routers, terminal servers, etc., which are monitored and
controlled via access to their management information.
Management information is viewed as a collection of managed objects,
residing in a virtual information store, termed the Management
Information Base (MIB). Collections of related objects are defined
in MIB modules. These modules are written using a subset of OSI's
Abstract Syntax Notation One (ASN.1) [1], termed the Structure of
Management Information (SMI) [2].
2. Overview
This document is one in the series of documents that define various
MIB objects, and statements of conformance, for IPv6. This document
defines the required instrumentation for implementations of UDP over
IPv6.
3. Transparency of IP versions to UDP
The fact that UDP is carried over IPv6 as opposed to IPv4, is largely
invisible to a UDP implementation. A "UDPng" did not need to be
defined, implementations simply need to support IPv6 addresses.
As such, the managed objects already defined in [UDP MIB] are
sufficient for managing UDP in the presence of IPv6. These objects
are equally applicable whether the managed node supports IPv4 only,
IPv6 only, or both IPv4 and IPv6.
For example, udpInDatagrams counts "The total number of UDP datagrams
delivered to UDP users", regardless of which version of IP is used to
deliver any of those datagrams.
Stated differently, UDP implementations don't need separate counters
for IPv4 and for IPv6.
4. Representing UDP Listeners
The exception to the statements in section 3 is the udpTable. Since
IPv6 addresses cannot be represented with the IpAddress syntax, not
all UDP endpoints can be represented in the udpTable defined in [UDP
MIB].
This memo defines a new, separate table to represent only those UDP
endpoints that utilize an IPv6 address. UDP endpoints on IPv4
addresses continue to be represented in udpTable [UDP MIB].
Daniele Standards Track