These days, I’ve been getting a lot of emails requesting the following question; “What are IPv6 Unicast, Multicast, and Anycast addresses? inches
IPv6 Unicast Addresses are being used for one-to-one communication; presently there are 3 types of Unicast addresses; Global, Unique-local, and Link-Local. 192.168.1.1 login admin
Global Unicast Addresses or GUA’s are being used by devices for one-to-one communication throughout the IPv6 Internet; and every WAR belongs to a described Global Scope. GUA’s are easy to identify because their values are always 2000 or higher; indicating the first three high order components of every GUA that is established, means “001” or 2000:: /3. A GUA comprises of 3 parts; the Global Direction-finding Prefix, the Subnet Designation, and the Interface Designation.
Unique-Local Addresses or ULA’s are being used by devices for one-to-one communication within an organization (site); and all ULA’s that are being used within an organization (site) connected to the same Unique-Local Scope. ULA’s are easily identifiable because the value of an ULA commences with FD00:: /8, which simply means that the first eight high order components of every ULA address are equal to “11111101”. A ULA is made up of 3 parts; a global Designation, Subnet Identifier, and the Interface Identifier.
Link-Local Details are being used by devices for one-to-one communication in a layer 2 domain, put simply, link-local addresses are being used by devices for one-to-one communication within a router’s border (the local link). Link-Local Addresses are easily recognizable because the significance of a link-local address commences with FE80:: /10, which simply means that the first 15 high order components of every link-local address are equal to “1111111010” and the rest of the 54 high order bits are equal to zero. Now, just in case you were wanting to know, the 64 lower portions of a link-local address are being used for the Software Identifier.
IPv6 Multicast details are being used for one-to-many communication; meaning a multicast address, identifies a team of network extrémité (devices) so when a supply of data is delivered to a multicast address, that packet is provided for all of the network interfaces (devices) that are in the multicast group.