A Memory- and Time-efficient On-chip TCAM Minimizer for IP Lookup

Provided by: edaa
Topic: Hardware
Format: PDF
Ternary Content Addressable Memories (TCAMs) are becoming very popular due to the simple-to-design IP lookup units included in high-speed routers; they are fast and simple to manage, and they provide a one-clock lookup solution. However, a major drawback of TCAM-based IP lookup schemes lies in their high power consumption. Thus, the rapid increase of routing tables inevitably deteriorates TCAM power efficiency. Although on-chip TCAM minimizers aim for the TCAM power efficiency in a fast time and at a small memory amount, the minimizers are not efficient in a large scale prefix table.

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