Abstract:

With the rapid development of internet, both new applications and internet traffic have increased very quickly， internet with IPv4 already can't meet people's requirement about its performance and function. Compared with IPv4, IPv6 has many advantages, such as a huge amount of address resource, reliable security, and high routing efficiency, moreover address resource of IPv4 already dried up, so IPv6 will finally replace IPv4. In the transition time from IPv4 to IPv6, many transition techniques are put forward and applied, such as dual-stack technique, tunnel technique and so on. The transition process from IPv4 to IPv6 will need a long time, so internet with IPv4 and IPv6 will coexist during the transition time. Meanwhile, the rapid development of internet puts high requirement to performance and function of router,distributed router based on the idea of forwarding and control element separation can improve router's performance greatly and perform wire-rate processing for IP packets, which well meets the requirement of rapid development internet. Therefore, doing research in IPv4／IPv6 forwarding control architecture of distributed router is very significant to improve the performance of core router and promote the development of IPv6.

Key words: distributed architecture, IPv4／IPv6, forwarding control, FIB