Abstract
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.
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References
Fuller, V., Li, T., Yu, J., Varadhan, K.: Classless inter-domain routing (CIDR): and address assignment and aggregation strategy, RFC1519 (1993)
Huang, N.F., Zhao, S.M.: A novel IP-routing lookup scheme and hardware architecture for multigigabit switching routers. IEEE J. Selected Areas in Communications 17, 1093–1104 (1999)
Wang, P.C., Chan, C.T., Chen, Y.C.: High-performance IP routing table lookup. Computer Communications 25, 303–312 (2002)
Ravikumar, V.C., Rabi, N.M.: TCAM architecture for IP lookup using prefix properties. IEEE Micro 24, 60–69 (2004)
Akhbarizadeh, M.J., Nourani, M., Cantrell, C.D.: Prefix segregation scheme for a TCAM-based IP forwarding engine. IEEE Micro 25, 48–63 (2005)
Lin, P.C., Chang, C.J.: A priority TCAM IP-routing lookup scheme. IEEE Communications Letters 7, 337–339 (2003)
Lim, H., Seo, J., Jung, Y.: High speed IP address lookup architecture using hashing. IEEE Communications Letters 7, 502–504 (2003)
Desai, M., Gupta, R., Karandikar, A., Saxena, K., Samant, V.: Reconfigurable finite-state machine based IP lookup engine for high-speed router. IEEE J. Selected Areas in Communications 21, 501–512 (2003)
Sangireddy, R., Somani, A.K.: High-speed IP routing with binary decision diagrams based hardware address lookup engine. IEEE J. Selected Areas in Communications 21, 513–520 (2003)
Huston, G.: CIDR report (2005), http://www.cidr-report.org
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© 2006 Springer-Verlag Berlin Heidelberg
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Yun, S. (2006). Hardware-Based IP Lookup Using n-Way Set Associative Memory and LPM Comparator. In: Vassiliadis, S., Wong, S., Hämäläinen, T.D. (eds) Embedded Computer Systems: Architectures, Modeling, and Simulation. SAMOS 2006. Lecture Notes in Computer Science, vol 4017. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11796435_41
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DOI: https://doi.org/10.1007/11796435_41
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-36410-8
Online ISBN: 978-3-540-36411-5
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