Ip Addresses Classes and Special-Use Ip Addresses
An Internet Protocol address is a numerical label assigned to each device participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location addressing. Its role has been characterized as follows: "A name indicates what we seek. An address indicates where it is. A route indicates how to get there."
The designers of the Internet Protocol defined an IP address as a 32-bit number and this system, known as IPv4, is still in use today. However, due to the enormous growth of the Internet and the predicted depletion of available addresses, a new version IPv6, using 128 bits for the address, was developed in 1995. IPv6 was standardized as RFC 2460 in 1998, and its deployment has been ongoing since the mid-2000s.
IP addresses are binary numbers, but they are usually stored in text files and displayed in human-readable notations, such as 172.16.254.1 (for IPv4), and 2001:db8:0:1234:0:567:8:1 (for IPv6).
Classful network design allowed for a larger number of individual network assignments and fine-grained subnetwork design. The first three bits of the most significant octet of an IP address were defined as the class of the address. Three classes (A, B, and C) were defined for universal unicast addressing. Depending on the class derived, the network identification was based on octet boundary segments of the entire address. Each class used successively additional octets in the network identifier, thus reducing the possible number of hosts in the higher order classes.
The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates’ five regional Internet registries to allocate IP address blocks to local Internet service providers and other entities. http://en.wikipedia.org/wiki/IP_address Several address ranges are reserved for "Special Use". These addresses all have restrictions of some sort placed on
The designers of the Internet Protocol defined an IP address as a 32-bit number and this system, known as IPv4, is still in use today. However, due to the enormous growth of the Internet and the predicted depletion of available addresses, a new version IPv6, using 128 bits for the address, was developed in 1995. IPv6 was standardized as RFC 2460 in 1998, and its deployment has been ongoing since the mid-2000s.
IP addresses are binary numbers, but they are usually stored in text files and displayed in human-readable notations, such as 172.16.254.1 (for IPv4), and 2001:db8:0:1234:0:567:8:1 (for IPv6).
Classful network design allowed for a larger number of individual network assignments and fine-grained subnetwork design. The first three bits of the most significant octet of an IP address were defined as the class of the address. Three classes (A, B, and C) were defined for universal unicast addressing. Depending on the class derived, the network identification was based on octet boundary segments of the entire address. Each class used successively additional octets in the network identifier, thus reducing the possible number of hosts in the higher order classes.
The Internet Assigned Numbers Authority (IANA) manages the IP address space allocations globally and delegates’ five regional Internet registries to allocate IP address blocks to local Internet service providers and other entities. http://en.wikipedia.org/wiki/IP_address Several address ranges are reserved for "Special Use". These addresses all have restrictions of some sort placed on