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EaseCAM: An Energy and Storage Efficient TCAM-Based Router Architecture for IP Lookup
May 2005 (vol. 54 no. 5)
pp. 521-533
ASCII Text
x 
 
V.C. Ravikumar, Rabi N. Mahapatra, Laxmi Narayan Bhuyan, "EaseCAM: An Energy and Storage Efficient TCAM-Based Router Architecture for IP Lookup," IEEE Transactions on Computers, vol. 54, no. 5, pp. 521-533, May, 2005.
 
 
BibTex
x
 
@article{ 10.1109/TC.2005.78,
author = {V.C. Ravikumar and Rabi N. Mahapatra and Laxmi Narayan Bhuyan},
title = {EaseCAM: An Energy and Storage Efficient TCAM-Based Router Architecture for IP Lookup},
journal ={IEEE Transactions on Computers},
volume = {54},
number = {5},
issn = {0018-9340},
year = {2005},
pages = {521-533},
doi = {http://doi.ieeecomputersociety.org/10.1109/TC.2005.78},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Computers
TI - EaseCAM: An Energy and Storage Efficient TCAM-Based Router Architecture for IP Lookup
IS - 5
SN - 0018-9340
SP521
EP533
EPD - 521-533
A1 - V.C. Ravikumar,
A1 - Rabi N. Mahapatra,
A1 - Laxmi Narayan Bhuyan,
PY - 2005
KW - Router
KW - TCAMs
KW - IP lookup
KW - partition
KW - compaction
KW - page table.
VL - 54
JA - IEEE Transactions on Computers
ER -
 
Ternary Content Addressable Memories (TCAMs) have been emerging as a popular device in designing routers for packet forwarding and classifications. Despite their premise on high-throughput, large TCAM arrays are prohibitive due to their excessive power consumption and lack of scalable design schemes. This paper presents a TCAM-based router architecture that is energy and storage efficient. We introduce prefix aggregation and expansion techniques to compact the effective TCAM size in a router. Pipelined and paging schemes are employed in the architecture to activate a limited number of entries in the TCAM array during an IP lookup. The new architecture provides low power, fast incremental updating, and fast table look-up. Heuristic algorithms for page filling, fast prefix update, and memory management are also provided. Results have been illustrated with two large routers (bbnplanet and attcanada) to demonstrate the effectiveness of our approach.

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Index Terms:
Router, TCAMs, IP lookup, partition, compaction, page table.
Citation:
V.C. Ravikumar, Rabi N. Mahapatra, Laxmi Narayan Bhuyan, "EaseCAM: An Energy and Storage Efficient TCAM-Based Router Architecture for IP Lookup," IEEE Transactions on Computers, vol. 54, no. 5, pp. 521-533, May 2005, doi:10.1109/TC.2005.78
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