When adopted TCP/IP in the 80, the IP version 4 (IPv4) offered an addressing strategy that, although it was scalable for some time, produced an inefficient allocation of addresses.
In the mid-90s began to detect the following difficulties over IPv4:
• Exhaustion of the remaining IPv4 network addresses not assigned. At that time, Class B space was running low.
• There was a large and rapid increase in the size of Internet routing tables as Class C networks are connected online. The resulting flood of new information on the network threatened the capacity of Internet routers to exercise effective management.
Over the past two decades, developed numerous extensions to IPv4. These extensions were designed specifically to improve the efficiency with which it is possible to use an area of 32-bit addressing and VLSM and CIDR.
Meanwhile, it has defined and developed an extensible and scalable version of IP, IP Version 6 (IPv6). IPv6 uses 128 bits instead of 32 bits which currently uses IPv4. IPv6 uses hexadecimal numbers represent 128 bits. IPv6 provides 640 sextillion address. This version of IP provides a sufficient number of directions for future communication needs.
IPv6 addresses are measured 128 bits and handles individual interfaces and sets of interfaces. IPv6 addresses are assigned to interfaces, not nodes. Since each interface belongs to a single node, any unicast address assigned to the node interfaces can be used as identifiers of the node. IPv6 addresses are written in hexadecimal, separated by a colon. IPv6 fields have a length of 16 bits.
IPv6 Address:
24AE: 0002: f2f3: b542: 0001:5687: a2ff: 6184
For directions easier to read, you may omit leading zeros in each field.
Field: 0002: write: 2: field: 0001: write: 1:
24AE: 2: f2f3: b542: 1:5687: a2ff: 6184