What are EUI-48 addresses?

What are EUI-48 addresses?

EUI-48 and EUI-64 identifiers are most commonly used as globally unique network addresses (sometimes called MAC addresses), as specified in various standards. For example, an EUI- 48 is commonly used as the address of a hardware interface according to IEEE Std 802, historically using the name “MAC-48”.

What is the difference between a MAC address and a EUI-48 address?

The distinction between EUI-48 and MAC-48 identifiers is in name and application only. MAC-48 was used to address hardware interfaces within existing 802-based networking applications; EUI-48 is now used for 802-based networking and is also used to identify other devices and software, for example Bluetooth.

How many bits are there in a eui-48 or MAC address?

The EUI-48 node address consists of a 24-bit OUI and a 24-bit EI as you can see on the slide, the EUI-64™ consists of either a 24 or 36 bit OUI and a 40 or 28bit EI respectively.

What is EUI-64 address?

EUI-64 (Extended Unique Identifier) is a method we can use to automatically configure IPv6 host addresses. An IPv6 device will use the MAC address of its interface to generate a unique 64-bit interface ID. However, a MAC address is 48 bit and the interface ID is 64 bit.

Is OUI registered with IEEE?

OUI is an IEEE Registration Authority (RA) specific term that is referred to in various standards and may be used to identify companies on the IEEE Public Listing. It is most often used to create IEEE 802-defined MAC addresses (EUI-48 and EUI-64).

What is an OUI lookup?

OUI Lookup is a website that provides up-to-date information about MAC Addresses and OUI Vendors. We also provide informational tutorials on how to find MAC addresses for your favourite operating systems and devices such as Windows or Linux.

How is a MAC 48 converted to a EUI-64 and why?

To convert a MAC-48 into an EUI-64, copy the OUI, append the two octets FF-FF and then copy the organization-specified extension identifier. To convert an EUI-48 into an EUI-64, the same process is used, but the sequence inserted is FF-FE. In both cases, the process can be trivially reversed when necessary.

Is Oui registered with IEEE?

What is Duid in DHCPv6?

The Client ID in DHCPv6 consists of two parts: a DHCP Unique Identifier (DUID) and an Identity Association Identifier (IAID). The DUID identifies the client system (rather than just an interface, as in DHCPv4), and the IAID identifies the interface on that system.

What RFC 4291?

Description. This standard (RFC) defines the addressing architecture of the IP Version 6 (IPv6) protocol. It includes the IPv6 addressing model, text representations of IPv6 addresses, definition of IPv6 unicast addresses, anycast addresses, and multicast addresses, and an IPv6 node’s required addresses.

What does EUI-48 stand for?

48-bit Extended Unique Identifiers (EUI-48) [EUI48] and 64-bit Extended Unique Identifiers (EUI-64) [EUI64] are address formats specified by the IEEE for use in various layer-2 networks, e.g. ethernet.

What is the lifetime of an EUI 48 address?

The IEEE manages allocation of MAC addresses, originally known as MAC-48 and which it now refers to as EUI-48 identifiers. The IEEE has a target lifetime of 100 years (until 2080) for applications using EUI-48 space and restricts applications accordingly.

Which network technologies use the EUI-48 format?

The following network technologies use the EUI-48 identifier format: The ITU-T G.hn standard, which provides a way to create a high-speed (up to 1 gigabit/s) local area network using existing home wiring ( power lines, phone lines and coaxial cables ).

What are 48-bit and 64-bit EUI-64?

Introduction 48-bit Extended Unique Identifiers (EUI-48) [EUI48] and 64-bit Extended Unique Identifiers (EUI-64) [EUI64] are address formats specified by the IEEE for use in various layer-2 networks, e.g. ethernet.