Consumers are demanding world-wide cellular access to the internet. This requires a global standard and effective means of accessing the internet from wireless devices. Integrating the two successful domains, viz., cellular networks and the Internet, provide anytime, anywhere access in Third Generation (3G) cellular networks. In this paper, a hierarchical architecture for integration of cellular network Global System for Mobile communications (GSM) and Mobile IPv6 as mobility management is proposed. GSM is the most widely used cellular network and mobile IP allows transparent routing of IP datagram in the Internet to the mobile node irrespective of its physical location.