IP Adress Management Software, IPv4/IPv6

An IP (Internet Protocol) Address is a number used to identify a device, typically a computer, on a TCP/IP network. Networks that use TCP/IP send communications based on destination IP address. Dissimilar to IP, which specifies packets format, datagrams, and addressing scheme.

There are two universal IP address standards: IP version 6(IPv6) and IP version 4 (IPv4). All computers or devices with IP addresses typically use the IPv4 address, and numerous are transitioning to IPv6. Here is the main difference between the two.

• IPv6 uses 128 binary bits in creating unique addresses in their network. These class of IP address uses eight groups of hexadecimal number separated via colon, as in 2002: sads: 0000:0000:1111:2019:9089:9090. The figures in the group that contain zeros are skipped to save on space as in ((2002: sads:: 1111:2019:9089:9090).
• IPv4 employs 32 bits to create an address in a typical computer network. The IPv4 address is denoted by four numbers separated by periods. Each of the figures is decimal represented in binary, octet. For instance

An IP address can be dynamic or static a static IP address does not change. It is permanent. A dynamic IP address changes over time and is assigned every time a device accesses the internet. The numbers in an IP address can be used in identifying a host of the network on a network. Four local internet archives – RIPE NCC, ARIN, LACNIC, and APNIC – assign IP addresses from the classes listed below.
Class A – Provides for 16 million hosts in the 126 networks
Class B – Provides for 65,000 hosts on the 16,000 networks
Class C – Provides for 254 hosts on the 2 million networks
Class D – Provides for multicast addresses
The unassigned IP addresses are almost over, so the CIDR new class scheme is about to replace the system based on the classes and adopts the IPv6 IP address system. This is because IPv6 addressing system has increased the size from 32 bits to 128 bits.

The physical address or machine used within the local area network of an organization may differ from the Internet IP address in the ip address management software. The best example is the 48 bit Ethernet IP address management software. TCP/IP has a facility ARP (Address Resolution Protocol) letting the administrator map the physical addresses of the IP addresses. This is called ARP Caching.