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Consistent Updates for Packet Classifiers

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2 Author(s)
Banerjee-Mishra, T. ; Univ. of Florida, Gainesville, FL, USA ; Sahni, S.

We present a methodology for constructing a consistent sequence of updates to be applied incrementally to packet classifiers when the updates arrive in a cluster, where consistency is with respect to the next hop/action returned from a packet forwarding table/classifier during lookup. The sequence of updates, built using our strategy, is free from redundancies in update operations and produces a near minimal increase in table size. We prove the existence of a consistent update sequence for any given rule table and a cluster of updates. Our experiments validate our methodology and demonstrate a minimal increase in intermediate table size as a cluster of updates is applied.

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Computers, IEEE Transactions on  (Volume:61 ,  Issue: 9 )