IPv6-Only Network Design and Deployment at IITH

S, Radhakrishnan (2014) IPv6-Only Network Design and Deployment at IITH. Masters thesis, Indian Institute of Technology.

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Abstract

The aim of thesis is for deploying an IPv6 only daily base enterprise network in IITH and making it fully functional for the daily use and address some of the key current challenges. The motivation for deploying IPv6 only network in the campus is due to the depletion of IPv4 address space. The IPv4 address space is only 32 bits, therefore has 232 addresses whereas IPv6 addresses are represented by 128 bits thereby its address space consists of 2128 addresses which is quite enough to address all the particles in the world with an IP address. Because of this scarcity of IPv4 addresses, many public organizations implemented NAT (Network Address Translation) to map private IPv4 addresses to a single public IPv4 addresses. So like this way NAT helped in dealing with the problem of IPv4 address scarcity. But NAT has got many disadvantages such as NAT adds complexities and it has basic disconnectivity problem with IPv6 only enabled devices. Also NAT has many security issues such as it is not compatible with IPSec protocol. Morover NAT was meant to be just a temporary solution for IPv4 exhaustion. So came the IPv6 address which contains enough IPv6 addresses to address all the devices. But the problem is both IPv4 and IPv6 are not compatible and during initial phase of IPv6 deployment IPv4 and IPv6 coexist together.So there has to be some mechanism to translate IPv4 to IPv6 and vice versa.

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