UUID

This specification defines UUIDs (Universally Unique IDentifiers) --

also known as GUIDs (Globally Unique IDentifiers) -- and a Uniform

Resource Name namespace for UUIDs. A UUID is 128 bits long and is

intended to guarantee uniqueness across space and time. UUIDs were

originally used in the Apollo Network Computing System (NCS), later

in the Open Software Foundation's (OSF's) Distributed Computing

Environment (DCE), and then in Microsoft Windows platforms.

This specification is derived from the OSF DCE specification with the

kind permission of the OSF (now known as "The Open Group"). Information from earlier versions of the OSF DCE specification have

been incorporated into this document. This document obsoletes RFC

4122.

This document describes an end-to-end session identifier for use in IP-based multimedia communication systems that enables endpoints, intermediary devices, and management systems to identify a session end-to-end, associate multiple endpoints with a given multipoint conference, track communication sessions when they are redirected, and associate one or more media flows with a given communication session. While the identifier is intended to work across multiple protocols, this document describes its usage in the Session Initiation Protocol (SIP).

This document also describes a backwards-compatibility mechanism for an existing session identifier implementation (RFC 7329) that is sufficiently different from the procedures defined in this document.

This document obsoletes RFC 7329.

This document defines a new DHCPv6 Unique Identifier (DUID) type called DUID-UUID. DUID-UUIDs are derived from the already-standardized Universally Unique IDentifier (UUID) format. DUID-UUID makes it possible for devices to use UUIDs to identify themselves to DHC servers and vice versa. UUIDs are globally unique and readily available on many systems, making them convenient identifiers to leverage within DHCP. [STANDARDS-TRACK]

This document describes the LDAP/X.500 \'entryUUID' operational attribute and associated matching rules and syntax. The attribute holds a server-assigned Universally Unique Identifier (UUID) for the object. Directory clients may use this attribute to distinguish objects identified by a distinguished name or to locate an object after renaming. [STANDARDS-TRACK]