Gordon And Mike's Ict Podcast

Intro: Two weeks ago we gave an overview of IPv6. This week we take a look at some of the technical details for this protocol. Mike: Gordon, a couple of weeks ago we discussed Ipv6 - can you give us a quick review - what's the difference between IPv4 and IPv6? The most obvious distinguishing feature of IPv6 is its use of much larger addresses. The size of an address in IPv6 is 128 bits, which is four times the larger than an IPv4 address. A 32-bit address space allows for 232 or 4,294,967,296 possible addresses. A 128-bit address space allows for 2 28 or 340,282,366,920,938,463,463,374,607,431,768,211,456 (or 3.4x1038) possible addresses. In the late 1970s when the IPv4 address space was designed, it was unimaginable that it could be exhausted. However, due to changes in technology and an allocation practice that did not anticipate the recent explosion of hosts on the Internet, the IPv4 address space was consumed to the point that by 1992 it was clear a replacement would be necessary. With IPv6, it is eve