Designed in the 70s the IPv4 protocol was for its time a revolutionary 32-bit number system which resulted in 4.3 billion IP addresses being available in theory. The unprecedented and unforeseen growth of the internet as well as a number of inherent problems with the original design of the IPv4 protocol have meant that the availability of IP addresses has become a critical issue with complete exhaustion expected within a couple of years according to some figures. This essay will look at what caused this problem in the first instance and then consider some of the proposed solutions intended to address this problem.
Not all of the 4.3 billion values created by the IPv4 protocol can be used. The IETF (Internet Engineering Task Force) has reserved 8% of the address space which is equivalent to 20.09 of the 256/8 network blocks. A further 65 (16/8 blocks) are reserved for use in multicast …(short extract)