After the client gets SLAAC or SLAAC with stateless Router Advertisement (RA) message, the client expected to create its own Interface ID. The client gets the prefix part of the IP adaptation 6 location from the Router Advertisement (RA) message; nonetheless, the RA message didn’t hold the data about the point of interaction ID for the client. Along these lines, the client makes its own Interface ID. The Interface ID can be gotten from the MAC address or a haphazardly produced 64-bit number.
EUI otherwise called EUI-64 interaction characterized by IEEE, EUI is the truncation of Extended Unique Identifier. The interaction utilizes a client’s 48-piece Ethernet MAC address and embeds an additional a 16 pieces in the 48-piece MAC address to make a 64-digit Interface ID. Ethernet MAC addresses are addressed in hexadecimal containing two sections:
Authoritatively Unique Identifier (OUI)- This is the initial segment of MAC address called OUI. An OUI is a 24-cycle number which particularly recognizes a merchant or producer of the gadget. The associations bought an OUI from the IEEE. The initial three octets of a MAC address are Organizationally Unique Identifier (OUI).
Gadget Identifier-The last three octets of the MAC address exceptionally recognize the gadget. It is additionally a 24-cycle (6 hexadecimal digits) esteem inside a typical OUI. The gadget identifier bits alloted by the association to their gadget.
An EUI-64 Interface ID has three sections addressed in double:
24-bits Organizationally Unique Identifier (OUI) from the client MAC address with a switched seventh piece. For instance, assuming the seventh piece of the OUI is 1, it turns into a 0, as well as the other way around in the EUI interface ID.
24-bits Device Identifier from the client MAC address Hexa decimal worth FFFE (16 pieces) between Organizationally Unique Identifier (OUI) and Device Identifier.
EUI-64 interaction utilizing the MAC address of BC:78:ba:b1:f8:55.
- Get the macintosh address of the host or gadget for instance for this situation BC:78:ba:b1:f8:55
- Embed ff:fe in the center: bc:78:ba:ff:fe:b1:f8:55
- Reorder the above hexadecimal digits in IP adaptation 6 documentation. bc78:baff:feb1:f855
- You can see that presently it’s 4 hextet, convert the primary octet from hexadecimal to paired: BC-> 10111100
- Flip the seventh piece: 10111100 – >10111110
- convert changed octet back to hexadecimal:01000111 – >BE
- Presently change the main octet with new worth one: bc78:baff:feb1:f855
- Embed the connection neighborhood prefix toward the start : fe80:: bc78:baff:feb1:f855
Benefits and Dis-Advantages of EUI-64 Process
EUI-64 cycle is a simple method for discovering that the location was logical made from the MAC address. We can without much of a stretch find FFFE in the Interface ID. We can likewise utilize the MAC address to discover the connection point ID. The Network overseers additionally effectively track an ID to an end-gadget utilizing the exceptional MAC address. The fundamental hindrance of determining IP variant 6 location from the MAC address is protection among clients since parcels can be followed to the real actual PC. In this way, we can involve a haphazardly produced Interface ID in its place.
Arbitrarily Generated Interface IDs
We can likewise design gadgets to utilize a haphazardly produced Interface ID as opposed to utilizing the MAC address and the EUI-64 interaction, Depending on the working framework. For instance, Windows Vista utilizes a haphazardly produced Interface ID rather than one made with EUI-64 cycle. Windows XP and past Windows working frameworks utilized EUI-64.
Whenever Interface ID is laid out, both through the EUI-64 interaction or through irregular age, it tends to be joined with an IP variant 6 prefix in the RA message to make a worldwide unicast address. To keep away from IP address copy tending to the client can utilize DAD (copied address location). This is like the Address Resolution Protocol (ARP) demand for its own location