After the first 10 bits in binary there are 54 zeros and then the 64-bit Interface ID. Link-Local addresses start with 1111 1110 10 in binary or FE80::/10 in hex.

These addresses are used for various functions such as neighbor discovery and stateless autoconfiguration.

Link Local: These addresses are used by nodes on a local-link to communicate with each other, and IPv6 routers must not forward packets that have link-local source or destination to other links.

2001:DB8:C003:1::F00D is an example of global unicast address. This is an IPv6 address from an aggregatable global unicast prefix, they are used on links that are aggregated upwards through orgazanizations.

Aggregatable global unicast address: The Address structure begins with 3 bits as 001 followed by 45-bit Global routing prefix, 16-bit Subnet ID and 64-bit Interface ID.

IPv6 unicast addresses are subdivided into the follow categories

Unicast : It identifies a single interface, a packet sent to a unicast address is delivered to the interface which has that specific address configured.

IPv6 addresses are classified into three types The IPv6 network for the address above is written as 2001:8:85a3::/64 IPv6 networks are written in CIDR notation: a network is denoted by the first address in the network ending in all zeroes, compressed to ::, followed by a slash (/), and a decimal value indicating the size in bits of the address prefix. The address above can be represented as 2001:8:85a3::11:7334

Successive fields/groups of zeros can be omitted and replaced by a double colon (::) only single time in an IPv6 address.

Leading zeros in a group can be omitted.

A packet that sent to a multicast address, is delivered by the interfaces identified by that multicast address. IPv6 Multicast addresses are the addresses that has a prefix of FF00./8. You can also test your IPv6 Knowledge on IPv6 Questions Page. Then, when a packet send to the anycast address, teh packet is delivered to the closest node. This address is assigned to a set of interfaces that typically belong to the different nodes. But with IPv6 NAT you can use Unique Local IPv6 Address on Internet.Īnycast addresses are new address type of IPv6. They are used on local networks and they can not used on Internet. Unique Local IPv6 Addresses are like IPv4 Private addresses. They are only used for neighbour discovery and next hop configuration. Link-Local IPv6 Address is the local address assigned only in a single subnet. Global Unicast IPv6 Address has the prefix 2000::/3.

But this time, this address space is very big and cover all of the devices that use IP address. This address type is like IPv4 Public addresses. Let’s check all these IPv6 Address Types deeply. IPv6 has Unicast address similar to IPv4 Unicast address, but it has also other new unicast addresses. These addresses are start with “0000 0000” at first 8 bits. Now, let’s explain these IPv6 Address Types and their Sub Types detaily. Mainly, there are four Address Types in IPv6. You can also learn Cisco IPv6 Configuration With Packete Tracer Let’s see all these address types one by one. Some of the concepts like public and private addresses will still remain in IPv6. This is anycast address.īy the way in IPv6, there is no Broadcast Address type. One additional address type is also in IPv6 world. Still multicast addresses are being used but with different addresses.

There are still unicast addresses in IPv6 world but this time there will be one more Unicast address types. IPv6 has some similar and some different address types than IPv4.

Ipv6 address types