![]() ![]() Simply put, CIDR with address aggregation allows numerous networks to be addressed with a single routing entry. Two colon characters (::) can also be strung together to shorten notation and eliminate groups of zeroes. Although IPv6 addresses are 4 times as long as IPv4 addresses, IPv4 addresses can still be written in IPv6 notation. Another issue with a classful system is that bandwidth utilization is rather significant when routers communicate routing information. IPv6 IP addresses are 128-bits in length. However, performance was hampered because enormous tables had to be looked up without using a more dynamic IP interval technique, such as CIDR. This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. PrefixĬIDR, or Classless Inter Domain Routing, was created to help large routers minimize the size of their routing tables, which was complex with classful routing.Ĭlassful routing consumes a lot of memory, resulting in prohibitively expensive hardware. Extended Unique Identifier (EUI), as per RFC2373, allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). HostMax: 2002:c007:ffff:ffff:ffff:ffff:ffff:fffe IPv6 also offers additional features, such as improved security, auto-configuration, and better support for multicast communications.Īddress: 2002:c000:022a:0000:0000:0000:0000:0000/29 This expansion supports the growing number of devices connecting to the internet, including computers, smartphones, tablets, IoT devices, and more. IPv6 addresses provide a significantly larger address space than IPv4, allowing for a virtually unlimited number of unique addresses. It is represented as eight groups of four hexadecimal digits, separated by colons. IPv6 is the latest version of the Internet Protocol, designed to replace IPv4 due to the depletion of available IPv4 addresses.Īn IPv6 address consists of 128 bits, compared to 32-bit IPv4 addresses. For example, "2001:0cb8:0000:0000:0000:ff00:0246:7348" IPv6 address.Īn IPv6 address is a unique identifier assigned to devices connected to an Internet Protocol version 6 (IPv6) network. ![]() A 16-byte IPv6 address is normally represented hexadecimal digits and divided into 8 groups separated by colons (:). ![]()
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