What is link-layer address in IPv6?

Address resolution is the process through which a node determines the link-layer address (e.g., Ethernet MAC address) of a neighbor given only its IP address. Address resolution is redefined for IPv6 and does not use ARP (Address Resolution Protocol) packets, as is the case for IPv4.

What protocol maps IP addresses to layer 2 data link layer addresses?

The Address Resolution Protocol(ARP)
The Address Resolution Protocol(ARP) is a communication protocol used to discover the data-link layer address(Layer 2 address like Media Access Control(MAC) address) associated with an Internet layer address(Layer 3 address like IPv4 address). ARP was defined in 1982 by RFC 826.

What are link-layer addresses?

A link-layer address is called a link address, called a physical address, and sometimes a MAC address. Since a link is controlled at the data-link layer, the addresses need to belong to the data-link layer.

What is FE80 in an IPv6 address?

link-local IPv6 addresses
Typically, link-local IPv6 addresses have “FE80” as the hexadecimal representation of the first 10 bits of the 128-bit IPv6 address, then the least-significant 64-bits of the address are the Interface Identifier (IID).

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.

Do all IPv6 addresses start with fe80?

At least, they should not be. There have been cases where routers would happily forward packets with a link-local source address. IPv6 link-local addresses are defined by RFC 4291 (IPv6 Addressing Architecture) and are covered by the prefix fe80::/10. In practice, only fe80::/64 is used.

What is the purpose of link layer?

The link layer includes the protocols that define communication between local (on-link) network nodes which fulfill the purpose of maintaining link states between the local nodes, such as the local network topology, and that usually use protocols that are based on the framing of packets specific to the link types.

What does the link layer do?

The data link layer is the protocol layer in a program that handles the moving of data into and out of a physical link in a network. The data link layer is Layer 2 in the Open Systems Interconnection (OSI) architecture model for a set of telecommunication protocols.

What are addresses in the 224.0 0.0 range used for?

The range of addresses between 224.0. 0.0 and 224.0. 0.255, inclusive, is reserved for the use of routing protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and group membership reporting.