Inter-domain routing using topology information

Abstract

This paper proposes an architecture for inter-domain routing, called DTIA -- Dynamic Topological Information Architecture. It is designed to address current limitations of BGP like: scalability of the routing tables, multihoming problems, churn rate, range of routing events and policy coordination. Still it supports the most important functionalities of BGP, and maintains the current Internet routing distribution model based on Inter-AS business relationships. The architecture is based on the knowledge of a static network graph formed by the Autonomous Systems (AS) and an algorithm to manage link failures. We use the concept of a region as a mechanism to sustain scale. New possible features like multi-path routing and enhanced Traffic Engineering capabilities might benefit with DTIA's usage.