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The PIP protocol and TUBA protocol used versions 8 and 9, following version 7 for TP/IX. In 2004, an IPv9 protocol was developed in China using 256-bit addresses.
ST2 distinguishes its own packets with an Internet Protocol version number 5, although it was never known as IPv5. [4] ST uses the same IP address structure and the same link layer protocol number (ethertype 0x800) as IP. In datagram mode, ST packets could be encapsulated with IP headers using protocol number 5. [8]
2 IGMP Internet Group Management Protocol: RFC 1112: 0x03 3 GGP Gateway-to-Gateway Protocol: RFC 823: 0x04 4 IP-in-IP IP in IP (encapsulation) RFC 2003: 0x05 5 ST Internet Stream Protocol: RFC 1190, RFC 1819: 0x06 6 TCP Transmission Control Protocol: RFC 793: 0x07 7 CBT Core-based trees: RFC 2189: 0x08 8 EGP Exterior Gateway Protocol: RFC 888 ...
Versions 2 and 3 supported variable-length addresses ranging between 1 and 16 octets (between 8 and 128 bits). [8] An early draft of version 4 supported variable-length addresses of up to 256 octets (up to 2048 bits) [9] but this was later abandoned in favor of a fixed-size 32-bit address in the final version of IPv4.
An example of the fragmentation of a protocol data unit in a given layer into smaller fragments. IP fragmentation is an Internet Protocol (IP) process that breaks packets into smaller pieces (fragments), so that the resulting pieces can pass through a link with a smaller maximum transmission unit (MTU) than the original packet size.
An Internet Protocol address (IP address) is a numerical label such as 192.0.2.1 that is assigned to a device connected to a computer network that uses the Internet Protocol for communication. [1] [2] IP addresses serve two main functions: network interface identification, and location addressing.
An IP header is header information at the beginning of an Internet Protocol (IP) packet.An IP packet is the smallest message entity exchanged via the Internet Protocol across an IP network.
IPv4 address exhaustion is the depletion of the pool of unallocated IPv4 addresses.Because the original Internet architecture had fewer than 4.3 billion addresses available, depletion has been anticipated since the late 1980s when the Internet started experiencing dramatic growth.