What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface

Last Updated on November 2, 2020 by

  • the MAC address of the IPv6 enabled interface
  • a randomly generated 64-bit hexadecimal address
  • an IPv6 address that is provided by a DHCPv6 server
  • an IPv4 address that is configured on the interface

    Answers Explanation & Hints:

    The EUI-64 process uses the MAC address of an interface to construct an interface ID (IID). Because the MAC address is only 48 bits in length, 16 additional bits (FF:FE) must be added to the MAC address to create the full 64-bit interface ID.

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What is use in the EUI

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.

How do I create a EUI

The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. The MAC address is first separated into two 24-bits, with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. The 16-bit 0xFFFE is then inserted between these two 24-bits for the 64-bit EUI address.

What would be the interface ID of an IPv6 enabled interface with?

The interface ID of an IPv6 address is the rightmost 64 bits, or last four hextets, of the address if no interface ID bits have been used for subnets.

What is the interface ID of the IPv6 address?

The second part of an IPv6 unicast or anycast address is typically a 64-bit interface identifier used to identify a host's network interface. A 64-bit interface ID is created by inserting the hex value of FFFE in the middle of the MAC address of the network card.