short-paper

A Practical Range Encoding Scheme for TCAMs

Authors:

Wenjun Li,

Xinwei Liu,

Wenxia Le,

Hui Li,

Huayu ZhangAuthors Info & Claims

SIGCOMM Posters and Demos '19: Proceedings of the ACM SIGCOMM 2019 Conference Posters and Demos

Pages 163 - 165

https://doi.org/10.1145/3342280.3342346

Published: 19 August 2019 Publication History

Get Access

Abstract

TCAMs play a central role in the forwarding plane of physical SDN switches. Despite their capability for line-speed queries, they are not well suited for representing rules with range fields. In this poster, we report our latest work on TCAM range encodings, which is not only better in terms of encoding performance, but also easier to understand and more practical to implement. The preliminary evaluation shows that, our proposed encoding scheme has comparable encoding efficiency to the optimal encoding scheme, while achieving an order-of-magnitude improvement on encoding performance over the optimal encoding scheme on average.

References

[1]

Nick McKeown and et al. 2008. OpenFlow: enabling innovation in campus networks. ACM SIGCOMM CCR 38, 2 (2008), 69--74.

Digital Library

Google Scholar

[2]

Ori Rottenstreich and et al. 2012. Exact worst case TCAM rule expansion. IEEE Trans. Comput. 62, 6 (2012), 1127--1140.

Digital Library

Google Scholar

[3]

Ori Rottenstreich and et al. 2016. Optimal in/out TCAM encodings of ranges. IEEE/ACM Transactions on Networking 24, 1 (2016), 555--568.

Digital Library

Google Scholar

[4]

Baruch Schieber and et al. 2005. Computing the minimum DNF representation of Boolean functions defined by intervals. Discrete Applied Mathematics 149, 1-3 (2005), 154--173.

Digital Library

Google Scholar

[5]

Venkatachary Srinivasan and et al. 1998. Fast and scalable layer four switching. In ACM SIGCOMM 1998. 191--202.

Digital Library

Google Scholar

[6]

Subhash Suri and et al. 2003. Compressing two-dimensional routing tables. Algorithmica 35, 4 (2003), 287--300.

Crossref

Google Scholar

Cited By

View all

Lin HChen WWang P(2025)LEPRE: An Updatable Database-Dependent Range Encoding AlgorithmIEEE Journal on Selected Areas in Communications10.1109/JSAC.2025.352881643:2(551-562)Online publication date: Feb-2025
https://doi.org/10.1109/JSAC.2025.3528816
Li WYang TChang YLi TLi H(2019)TabTree: A TSS-assisted Bit-selecting Tree Scheme for Packet Classification with Balanced Rule Mapping2019 ACM/IEEE Symposium on Architectures for Networking and Communications Systems (ANCS)10.1109/ANCS.2019.8901884(1-8)Online publication date: Sep-2019
https://doi.org/10.1109/ANCS.2019.8901884

Index Terms

A Practical Range Encoding Scheme for TCAMs
1. Hardware
  1. Communication hardware, interfaces and storage
    1. Networking hardware
2. Networks
  1. Network algorithms
    1. Data path algorithms

Recommendations

Space-Efficient TCAM-Based Classification Using Gray Coding

Ternary content-addressable memories (TCAMs) are increasingly used for high-speed packet classification. TCAMs compare packet headers against all rules in a classification database in parallel and thus provide high throughput unparalleled by software-...
Topological transformation approaches to optimizing TCAM-based packet classification systems
SIGMETRICS '09

Several range reencoding schemes have been proposed to mitigate the effect of range expansion and the limitations of small capacity, large power consumption, and high heat generation of TCAM-based packet classification systems. However, they all ...
Efficient gray-code-based range encoding schemes for packet classification in TCAM

An efficient ternary content addressable memory (TCAM) encoding scheme using a binary reflected Gray code (BRGC) and the concept of elementary intervals is presented for efficiently storing arbitrary ranges in TCAM. The proposed layered BRGC range ...

Comments

Information & Contributors

Information

Published In

SIGCOMM Posters and Demos '19: Proceedings of the ACM SIGCOMM 2019 Conference Posters and Demos

August 2019

183 pages

ISBN:9781450368865

DOI:10.1145/3342280

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 19 August 2019

Permissions

Request permissions for this article.

Request Permissions

Check for updates

Author Tags

Qualifiers

Short-paper
Research
Refereed limited

Funding Sources

National Keystone R&D Program of China
PCL Future Regional Network Facilities for Large-scale Experiments and Applications
NSFC

Conference

SIGCOMM '19

Sponsor:

SIGCOMM

SIGCOMM '19: ACM SIGCOMM 2019 Conference

August 19 - 23, 2019

Beijing, China

Acceptance Rates

SIGCOMM Posters and Demos '19 Paper Acceptance Rate 62 of 102 submissions, 61%;

Overall Acceptance Rate 92 of 158 submissions, 58%

Other Metrics

View Article Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

2
Total Citations
View Citations
214
Total Downloads

Downloads (Last 12 months)10
Downloads (Last 6 weeks)0

Reflects downloads up to 28 Feb 2025

Other Metrics

View Author Metrics

Citations

Cited By

View all

Lin HChen WWang P(2025)LEPRE: An Updatable Database-Dependent Range Encoding AlgorithmIEEE Journal on Selected Areas in Communications10.1109/JSAC.2025.352881643:2(551-562)Online publication date: Feb-2025
https://doi.org/10.1109/JSAC.2025.3528816
Li WYang TChang YLi TLi H(2019)TabTree: A TSS-assisted Bit-selecting Tree Scheme for Packet Classification with Balanced Rule Mapping2019 ACM/IEEE Symposium on Architectures for Networking and Communications Systems (ANCS)10.1109/ANCS.2019.8901884(1-8)Online publication date: Sep-2019
https://doi.org/10.1109/ANCS.2019.8901884

View Options

Login options

Check if you have access through your login credentials or your institution to get full access on this article.

Full Access

Get this Publication

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Abstract

References

Cited By

Index Terms

Recommendations

Space-Efficient TCAM-Based Classification Using Gray Coding

Topological transformation approaches to optimizing TCAM-based packet classification systems

Efficient gray-code-based range encoding schemes for packet classification in TCAM

Comments

Information

Published In

Sponsors

Publisher

Publication History

Permissions

Check for updates

Author Tags

Qualifiers

Funding Sources

Conference

Acceptance Rates

Contributors

Other Metrics

Bibliometrics

Article Metrics

Other Metrics

Citations

Cited By

Login options

Full Access

View options

PDF

eReader

Share

Share this Publication link

Share on social media

Affiliations