Paper Info
Title
Soft-error tolerant TCAMs for high-reliability packet classifications
Abstract
In the internet, packets are classified by source and destination addresses, ports, and protocol type. Ternary content addressable memories (TCAMs) are often used to perform this operation. However, high-reliability packet classifiers in aerospace network applications require soft-error tolerant TCAMs to prevent system from errors caused by environmental factors such as high-energy radiations. This paper shows a soft-error tolerant TCAM (STTCAM), which enhances the reliability of TCAMs for soft-errors. The STTCAM randomly selects a search key to be evaluated. Then, parallel TCAMs detect single-bit flip errors. When the search key matches the last word, the STTCAM calculates the similarity of the search key to the TCAM word. If 99% of similarity is detected, then a suspected error is found and the STTCAM refreshes the TCAM words by using a backup ECC-SRAM. Experimental results show that the STTCAM improves TCAMs reliability significantly than the existing scheme. The STTCAM can be easily implemented and is useful for fault-tolerant packet classifiers.
Year
DOI
Venue
2014
10.1109/APCCAS.2014.7032821
Circuits and Systems
Keywords
Field
DocType
SRAM chips,content-addressable storage,fault tolerance,integrated circuit reliability,radiation hardening (electronics),ECC-SRAM,STTCAM,aerospace network application,environmental factor,fault-tolerant packet classifier,high-reliability packet classification,single-bit flip error detection,soft-error tolerant,ternary content addressable memory
Content-addressable memory,Soft error,Computer science,Network packet,Electronic engineering,Real-time computing,Probabilistic logic,Computer engineering,Backup,The Internet
Conference
Citations 
PageRank 
References 
3
0.43
4
Authors
5
Name
Order
Citations
PageRank
Infall Syafalni1133.62
Tsutomu Sasao21083141.62
Xiaoqing Wen379077.12
Stefan Holst413912.82
Kohei Miyase556238.71