2012年5月16日 · Extended Unique Identifier (EUI), as per RFC2373, allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. The MAC ...

2016年9月30日 · Proceso EUI-64 (Extended Unique Identifier) Este proceso trata de emplear la propia MAC-address del equipo y usarla como ID de interfaz en la dir. IPv6, pero si recordamos, la dirección física de un host sólo posee 48-bits y el ID de interfaz requiere de 64, por lo tanto se adjunta los número 0xFFFE entre el OUI (Identificador único ...

2023年11月1日 · Extended Unique Identifier-64 or simply "EUI-64" is a key element and has become a pivotal standard in modern networking, primarily used for generating Interface Identifiers in IPv6 addressing. One distinct operation in the EUI-64 generation process involves inverting the 7th bit of the 48-bit MAC address.

Just to add my part, agreeing on everyone so far that the answers are 1 & 2; that I've read EUI-64 will become a thing of the past. More specifically on communications outside an intranet because the concept of using a hosts MAC address in a global IPv6 address is frowned upon from a security perspective.

The EUI-64 method works in collaboration with IPv6 addresses. It is used to derive the host portion (/64) of the IP addresses from the interface MAC address by inserting FFFE in the middle (to go from 48 to 64 bits) and inverting the 7th most significant bit in the MAC address.

2021年2月16日 · My question is, I used EUI-64 in creating my global unique IPv6 addresses on each subinterface, and I can't figure out the rules IOS uses to create the full IPv6 address. Normally, rules are applied to the MAC address (insert FFFE, flip seventh bit, append to prefix), but in this case, each subinterface has an identical mac address.

2013年3月5日 · Now the modified EUI-64 format is a EUI-48 that’s been modified into a EUI-64 type IID. The process involved setting the u bit to 1 to represent locally administered and inserting FFFE in the middle of the 6 bytes of EUI-48.

I've encountered some contradictory information on how EUI-64 addresses are created. Specifically pertaining to the flipping of the 7th bit in the MAC address. From the majority of my studies, I've read that we need to flip ( if it is a 0 make it a 1, if it is a 1 make it a 0) the U/L bit in the MAC address, the 7th bit.

IPv6 nodes are not required to validate that interface identifiers created with modified EUI-64 tokens with the "u" bit set to universal are unique. The use of the universal/local bit in the Modified EUI-64 format identifier is to allow development of future technology that can take advantage of interface identifiers with universal scope. 6.

EUI-64 (extended Unique identifier) tells the router to use an interface's mac-address with predefined prefix .For ex- you have prefix 2001:DB9:0123:A::/64 and want to use eui-64 to let the router create an ipv6 address for an interface.To do that ,type the command - interface fa0/0. ipv6 address 2001:DB9:0123:A::/64 eui-64