What is Eui-64 addressing?
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 a EUI-64 address is constructed?
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.
Which is the the IPv6 notation for addressing?
The preferred IPv6 address representation is: x:x:x:x:x:x:x:x , where each x is the hexadecimal values of the eight 16-bit pieces of the address. IPv6 addresses range from 0000:0000:0000:0000:0000:0000:0000:0000 to ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff .
What is used in the EUI-64 process to create IPv6?
What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface? Explanation: The EUI-64 process uses the MAC address of an interface to construct an interface ID (IID).
What is the EUI-64 process when is this process used?
Modified Extended Unique Identifier 64 (EUI-64) is the process that allows a host to assign itself a unique IPv6 address. The host’s MAC address is converted into a 64-bit identifier, called a Modified EUI-64, and this value is appended to a 64-bit network prefix learned by other means.
How is EUI-64 calculated?
The second part of an IPv6 unicast address (used to identify a host’s network interface) is usually a 64-bit interface identifier….IPv6 EUI-64 calculation
- Split the MAC address in two halves (6 hex digits each).
- Insert FFFE in between the two, making the interface ID.
- Invert the seventh bit of the interface ID.
What is used in the EUI 64 process to create IPv6?
What does 64 mean in IPv6?
The /64 is the prefix length. It is the number of bits in the address that is fixed. So a /64 indicates that the first 64 bits of the 128-bit IPv6 address are fixed. The remaining bits (64 in this case) are flexible, and you can use all of them.
What are the IPv6 address types?
The three types of IPv6 addresses are: unicast, anycast, and multicast.
- Unicast addresses identify a single interface.
- Anycast addresses identify a set of interfaces in such a way that a packet sent to an anycast address is delivered to a member of the set.
Which Cisco IOS interface command assigns a static IPv6 address using an EUI-64 interface ID?
The correct answer is “IPsec.” IPv6 uses IPsec for securely connecting over the internet.
What is the IPv6 EUI-64 format address?
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.
What is the EUI-64 interface identifier?
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.
How does IPv6 self-configure interface addresses?
When an IPv6 host first becomes active on a link, it can self-configure its own interface address. The first step in this process is the determination of the 64-bit Interface ID portion of the address. On broadcast interfaces (where hosts are most likely to appear), a mechanism called MAC-to-EUI64 conversion is used.
Will EUI-64 change the MAC address of my interface?
Normally people don’t change the MAC addresses of their interfaces which means that EUI-64 will change the 7 th bit from 0 to 1 most of the time. Here’s what it looks like: