VM Times

Section 1: Introduction

Although the Internet Protocol IPv4 was giving efficient service over than 20 years ,

but the new Internet Protocol IPv6 provides higher efficiency like having enough

level of IPs, stronger security and mobility. In fact it is good to evaluate the performance benefits that we can get from IPv6 protocol in compare to the IPv4 protocol. We can upgrade the existing IPv4 infrastructure to the next generation Internet Protocol(IPv6) and get its advantages using the transition mechanisms.

When IPv4 was designed most of networks had just few nodes, low bandwidth, high latency, and high error rates. Most common applications at that time were FTP,e-mail, and so on.In the early 1990

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