Policy-based BGP-control architecture for inter-AS routing adjustment

Osamu Akashi*, Kensuke Fukuda, Toshio Hirotsu, Toshiharu Sugawara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Unexpected temporal and spatial changes of interdomain routing paths often lead to the necessity of on-demand routing adjustment among independently managed ASs. For resolving this problem, we have developed a BGP-control architecture called Virtual Router (VR) for controlling conventional BGP routers from outside without any protocol extensions. The VR combined with a multi-agent system (MAS) can be applied for the inter-AS routing adjustment for transit ISPs and their customer ASs. This architecture makes incremental deployment possible. The VR controls interdomain routing by dynamically changing forwarding paths among alternative BGP entries in multiple border routers. Each agent, which interprets a policy description for acquiring and analyzing network status, exchanges interdomain routing adjustment preferences when an adjustment is required, and coordinates where and how to change routing on the basis of feedback. Evaluation results indicate the validity and effectiveness of the basic design of our system in some control scenarios, where an AS tries to balance inbound traffic flowing via neighboring BGP peers.

Original languageEnglish
Pages (from-to)2996-3002
Number of pages7
JournalComputer Communications
Issue number13
Publication statusPublished - 2008 Aug 15


  • BGP
  • Inter-AS routing
  • Multi-agents
  • Policy-based control

ASJC Scopus subject areas

  • Computer Networks and Communications


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