Name
Abstract | ||
|---|---|---|
In the era of IPv6, since the number of IPv6 addresses rapidly increases and the required speed is more than Giga lookups per second (GLPS), an area-efficient and high-speed IP lookup architecture is desired. This paper shows a parallel index generation unit (IGU) for memory-based IPv6 lookup architecture. To reduce the size of memory in the IGU, we use a linear transformation and a row-shift decomposition. A single-memory realization requires O(2(l) log k) memory size, where l denotes the length of prefix, while the realization using IGU requires O(kl) memory size, where k denotes the number of prefixes. In IPv6 prefix lookup, since l is at most 64 and k is about 340 K, the IGU drastically reduces the memory size. Also, to reduce the cost, we realize the parallel IGU by using both on-chip and off-chip memories. We show a design algorithm for the parallel IGU to store given off-chip and on-chip memories. The parallel IGU has a simple architecture and performs lookup by using complete pipelines those insert the pipeline registers in all the paths. We loaded more than 340 K IPv6 pseudo prefixes on the Xilinx Virtex 6 FPGA with off-chip DDRII+ Static RAMs (SRAMs). Its lookup speed is 1.100 giga lookups per second (GLPS) which is sufficient for the required speed for a next generation 400 Gbps link throughput. As for the normalized area and lookup speed, our implementation outperforms existing FPGA implementations. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1587/transinf.2014RCP0006 | IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS |
Keywords | Field | DocType |
CAM, IP lookup, index generation unit, FPGA | IPv6,Architecture,Computer architecture,Computer science,Field-programmable gate array | Journal |
Volume | Issue | ISSN |
E98D | 2 | 1745-1361 |
Citations | PageRank | References |
2 | 0.40 | 15 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hiroki Nakahara | 1 | 155 | 37.34 |
| Tsutomu Sasao | 2 | 1083 | 141.62 |
| Munehiro Matsuura | 3 | 189 | 24.44 |
| Hisashi Iwamoto | 4 | 11 | 2.28 |
| Yasuhiro Terao | 5 | 2 | 0.40 |