High-performance IP routing table lookup
Computer Communications
A novel IP-routing lookup scheme and hardware architecture for multigigabit switching routers
IEEE Journal on Selected Areas in Communications
Reconfigurable finite-state machine based IP lookup engine for high-speed router
IEEE Journal on Selected Areas in Communications
High-speed IP routing with binary decision diagrams based hardware address lookup engine
IEEE Journal on Selected Areas in Communications
Advanced hashing schemes for packet forwarding using set associative memory architectures
Journal of Parallel and Distributed Computing
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IP lookup process becomes the bottleneck of packet transmission as IP traffic increases. Hardware-based IP lookup is desirable for high-speed router. However, the IP lookup schemes using an index-based table are not efficient due to heavy prefix expansion. In this paper, efficient hardware-based IP lookup schemes using n-way set associative memory and a LPM comparator is proposed. It reduces memory requirements to about 50% or below compared with previous scheme and provides faster updating speed. It also completes an IP routing lookup with two memory accesses.