128-bit IP addresses
An IP address comes in two formats: ipV4 and ipV6. In IpV4 32 bits are allocated to the IP address. In IpV6, 128 bits are allocated to the address. This is done by the protocol and is a standard for developing an IP address.
32 bits (for IPv4), or 128 bits (for IPv6).32 bits (for IPv4), or 128 bits (for IPv6).32 bits (for IPv4), or 128 bits (for IPv6).32 bits (for IPv4), or 128 bits (for IPv6).
IPv6 uses a 128-bit address space
IN IPv6 we can find 128bits.
IPv6 address
64 bits
The last 64 bits of an IPv6 IP address is called the Interface ID. These last 64 bits are used to uniquely identify an interface on the local link.
Interface ID
128 Bits. An IPv6 address is made up of 8 fields consisting of 16 bits per field. If you multiply 8 x 16 will get 128 bits. Each field is separated by colons unlike IPv4 which was separated by dotted decimal notation. A good link to go to to see the address and how sub-netting is done is on the related links below.
IPV6 stands for internet protocol version 6. IPV6 address if of 128 bits and also have IPsec inbuilt .
In IPv6, the multicast address subnet ID is 64 bits long. This is part of the overall 128-bit address structure, where the first 8 bits are reserved for the multicast prefix (FF00::/8), followed by 16 bits for flags and scope, and the remaining 64 bits represent the group ID. Thus, the group ID allows for a large number of multicast groups within the IPv6 space.
Totals bits for IPv6 = 128