Study on partial-transit Inter-domain routing over the TEIN2 backbone

Based on the transit behavior, we categorize the Internet backbones into two types, global-transit backbone and partial-transit backbone. Partial-transit backbone represents the majority of R&E (Research & Education) backbones, which is liable to a number of inter-domain routing problems due to its particular characteristics. Through two routing cases in TEIN2 backbone, a typical R&E partial-transit backbone, we point out the main problems in partial-transit inter-domain routing, most of which are all relevant to inter-domain routing policy. After studying the related work on inter-domain routing policy, we propose a Distributed BGP Policy Simulation and Evaluation System, BGP-Grid. This solution is mainly out of consideration for operation and network engineering of TEIN2 backbone, which is proved to be practicable and effective during the three years´ TEIN2 operation.