What is Ipv6 ? and its benefits ?

What is Ipv6 ? and its benefits ?

Internet Protocol version 6 (IPv6) is a new version of the Internet Protocol (IP) that is designed to succeed the older Internet Protocol version 4 (IPv4). IPv6, as a new version of IPv4, routes using the same protocols and techniques. Although the addresses are longer, the protocols used in routing IPv6 are simply logical extensions of the protocols used in IPv4

The difference from iv6 and ip4 is that iv6 is 128 bits long (16 bytes). Basic architecture is 64 bits and iv4 is 32 bits long (4 bytes).

The benefit of IPv6 network is that, it provides auto configuration capabilities. They are simpler, flatter and more manageable, especially for large installations. Direct addressing is possible, due to vast address space – the need for network address translation devices is effectively eliminated.

IPv6 dynamic routing protocols have been defined for RIP (routing information protocol), BGP (border gateway protocol), and OSPF (Open Shortest-Path-First).

OSPF

OSPF V6 (documented in RFC 2740) is very similar to OSPF v4. In fact, the RFC describing OSPF v6 is simply a list of changes to OSPF v4 which are needed to support IPv6. The fundamental mechanisms of OSPF (flooding, DR election, area support, SPF calculations, etc.) are unchanged in OSPF v6. The changes which have been added are either due to changes in protocol semantics between IPv4 and IPv6, or simply to handle the increased address size of IPv6.

RIPng

RIPng is a simple routing protocol based on RIP. RIPng was defined in RFC2080. To maintain the simplicity of RIP, the RIPng protocol is simply the minimum change to RIP (Routing Information Protocol) as specified in RFC 1058 and RFC 1723, necessary for operation over IPv6.

RIPng is, therefore, no more or less powerful than RIP was. However, it provides a simple way to bring up an IPv6 network without having to build a reliable or manageable routing protocol first. Our interoperability demo in the iLabs uses RIPng to distribute routing information.

What is Ipv6 ? and its benefits ?

Internet Protocol version four, or IPv4, is a system of addresses used to identify devices on a network. Originally described in 1981 in RFC791, IPv4 is the most widely used Internet layer protocol, and at this point is used by the vast majority of users to connect to the Internet. IPv4 addresses are actually 32-bit numbers. This means that there are 232, or just over four billion, possible addresses. Over time, however, it has become clear that more addresses than this will be required to ensure ongoing growth of the Internet. The unused pool of IPv4 addresses is predicted run out in the next two years, so an alternative is required. IPv6 is a new version of the data network protocol on which the Internet is based. Its basic specifications were developed by the IETF (Internet Engineering Task Force) during the 90s. The main motivation behind IPv6 development and deployment was to expand the address space available on the Internet in order to allow the connection of billions of new devices (PDAs, mobile phones, etc.), new users and “always on” technologies (xDSL, cable television, Ethernet to the home, fiber to the home, power line communications, etc.).