Evolution towards global routing scalability

  • Authors:
  • Varun Khare;Dan Jen;Xin Zhao;Yaoqing Liu;Dan Massey;Lan Wang;Beichuan Zhang;Lixia Zhang

  • Affiliations:
  • University of Arizona;UCLA;University of Arizona;University of Memphis;Colorado State University;University of Memphis;University of Arizona;UCLA

  • Venue:
  • IEEE Journal on Selected Areas in Communications - Special issue title on scaling the internet routing system: an interim report
  • Year:
  • 2010

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Abstract

Internet routing tables have been growing rapidly due to factors such as edge-site multihoming, traffic engineering, and disjoint address allocations. To address the routing scalability problems caused by this rapid growth, we propose an evolutionary approach that is incrementally deployable and provides immediate benefits to any adopting ASes. The basic premise of the approach is that route aggregation removes from routing tables the unnecessary topological details about remote portions of the Internet. We demonstrate that aggregation can be applied incrementally starting from local scopes within individual routers and individual ASes, and gradually expanded to the global Internet scope. The evaluation studies show that route aggregation is effective in addressing FIB scalability problems within a router and within a network.