In the up-to-date terminology, we'd say that the device has a burned-in EUI-48 which you have changed in software. The reason for this is that they are now used for more things than just media access addressing. It is just that IEEE no longer calls them by the old name (MAC-48), it now calls them by the new name (EUI-48). There is no practical difference whatsoever. If MAC-48 is burned-in-address and is stored in ROM of NIC, then, does that mean, when we change MAC address with software, it is EUI-48 that is being changed?ġ.What is the practical difference between MAC-48 and EUI-48 ?Ģ.If EUI-48 is not "MAC Address", then how has it made MAC-48 obsolete ?ģ.If MAC-48 is burned-in-address and is stored in ROM of NIC, then, does that mean, when we change MAC address with software, it is EUI-48.If EUI-48 is not "MAC Address", then how has it made MAC-48 obsolete ?.What is the practical difference between MAC-48 and EUI-48 ?.
Modified EUI-64 using only FF-FE (and never FF-FF) and with the U/Līased on this, I have following questions: Results in extending MAC addresses (such as IEEE 802 MAC address) to Locally assigned IPv6 addresses based on the Modified EUI-64).
treats MAC-48 as EUI-48 instead (as it is chosen from the sameĪddress pool) and toggles the U/L bit (as this makes it easier to type IPv6 - one of the most prominent standards that uses a Modified EUI-64 MAC-48 space, but encourages adoption of EUI-64s instead. The IEEE has a target lifetime of 100 years for applications using Organizations issuing EUI-64s are cautionedĪgainst issuing identifiers that could be confused with these forms. In both cases, the process can be trivially To convertĪn EUI-48 into an EUI-64, the same process is used, but the sequence Then copy the organization-specified extension identifier. MAC-48 into an EUI-64, copy the OUI, append the two octets FF-FF and In addition, the EUI-64 numbering system encompasses both MAC-48 andĮUI-48 identifiers by a simple translation mechanism. Proprietary term EUI-48 should be used for this purpose. To address hardware interfaces within existing 802-based networkingĪpplications, and thus not to be used in the future. Previously used to refer to a specific type of EUI-48 identifier used The IEEE now considers the label MAC-48 to be an obsolete term, Indistinguishable from one and assigned from the same numbering Is not in fact a "MAC address", although it is syntactically Nominal: MAC-48 is used for network hardware EUI-48 is used to The distinction between EUI-48 and MAC-48 identifiers is purely