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IPv6 Lookups Using Distributed and Load Balanced Bloom Filters for 100Gbps Core Router Line Cards

Date Added: May 2009
Format: PDF

Internet line speeds are expected to reach 100Gbps in a few years. To match these line rates, a single router line card needs to forward more than 150 million packets per second. This requires a corresponding amount of longest prefix match operations. Furthermore, the increased use of IPv6 requires core routers to perform the longest prefix match on several hundred thousand prefixes varying in length up to 64 bits. It is a challenge to scale existing algorithms simultaneously in the three dimensions of increased throughput, table size and prefix length. Recently, Bloom filter-based IP lookup algorithms have been proposed.