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IFIP
2009
Springer

A Pipelined IP Address Lookup Module for 100 Gbps Line Rates and beyond

13 years 9 months ago
A Pipelined IP Address Lookup Module for 100 Gbps Line Rates and beyond
New Internet services and technologies call for higher packet switching capacities in the core network. Thus, a performance bottleneck arises at the backbone routers, as forwarding of Internet Protocol (IP) packets requires to search the most specific entry in a forwarding table that contains up to several hundred thousand address prefixes. The Tree Bitmap algorithm provides a well-balanced solution in respect of storage needs as well as of search and update complexity. In this paper, we present a pipelined lookup module based on this algorithm, which allows for an easy adaption to diverse protocol and hardware constraints. We determined the pipelining degree required to achieve the throughput for a 100 Gbps router line card by analyzing a representative sub-unit for various configured sizes. The module supports IPv4 and IPv6 configurations providing this throughput, as we determined the performance of our design to achieve a processing rate of 178 million packets per second.
Domenic Teuchert, Simon Hauger
Added 26 May 2010
Updated 26 May 2010
Type Conference
Year 2009
Where IFIP
Authors Domenic Teuchert, Simon Hauger
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