Slina: Service Locating Using Ipv6 Anycast At Network Layer

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Date
2004-08
Authors
Karuppiah, Ettikan Kandasamy
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Abstract
Design of IPv6 as the successor of IPv4 made possible adaptation of a new communication mechanism, anycasting. Anycasting allows communication from a specific node to anyone of the nodes in a group of nodes, which share the same IP address. Anycast was designed for service location and can be used for many duplicated services such as mirroring service and domain name service. Implementation of service location and nodes configuration will become much easier with anycast service. Usage of application layer anycasting, integration of 'network intelligent' boxes and metric based server selection to locate duplicated services cause additional overhead to the network and also to the communicating nodes. Thus, a simple and yet efficient mechanism is required to enable service location using anycasting. In this thesis we propose a three-layered Internet model of fault tolerant and load balanced global IPv6 anycast service locating architecture, SLINA (Service Locating using Initial Network layer Anycast packet). Simple application layer modification, anycast group membership mechanism and anycast packet forwarding technique which includes anycast packet lookup and routing, are the functions involved in the three-layered approach. SLINA akhitecture uses the initial IP anycast packet for service locating. Total solution for IPv6 anycast service location at network layer has been designed and implemented which includes new anycast addressing scheme, new integrated unicast and anycast address lookup technique, new integrated unicast and anycast packet routing protocol, fault tolerant and load balanced anycasting service with simple API approach and finally anycast. group membership protocol. A simulated implementation of NP based address lookup, routing protocols, group membership mechanisms and actual end-to-end anycast client-server communication in networked environment has proved the functionality of the architecture. The implementation shows that the proposed architecture can be easily integrated with today's Internet to enable global IPv6 anycasting for service location without much modification.
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Design of IPv6 as the , new communication mechanism, anycasting
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