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The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks

Joseph Kim

Computer Networks, Volume: 70, Pages: 192 - 209

Swansea University Author: Joseph Kim

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DOI (Published version): 10.1016/j.comnet.2014.06.001

Abstract

Recent studies on the practice of shaping subscribers’ traffic by Internet service providers (ISPs) give a new insight into the actual performance of broadband access networks at a packet level. Unlike metro and backbone networks, however, access networks directly interface with end-users, so it is...

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Published in: Computer Networks
ISSN: 1389-1286
Published: Elsevier BV 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa18035
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first_indexed 2014-06-16T09:24:06Z
last_indexed 2021-10-30T02:30:42Z
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spelling 2021-10-29T20:49:51.6301369 v2 18035 2014-06-06 The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks 28df2d8e401d3e36b6da4a4124049742 Joseph Kim Joseph Kim true false 2014-06-06 Recent studies on the practice of shaping subscribers’ traffic by Internet service providers (ISPs) give a new insight into the actual performance of broadband access networks at a packet level. Unlike metro and backbone networks, however, access networks directly interface with end-users, so it is important to base the study and design of access networks on the behaviors of and the actual performance perceived by end-users. In this paper we study the effect of ISP traffic shaping using traffic models based on user behaviors and application/session-layer metrics providing quantifiable measures of user-perceived performance for HTTP, FTP, and streaming video traffic. To compare the user-perceived performance of shaped traffic flows with those of unshaped ones in an integrated way, we use a multivariate non-inferiority testing procedure. We first investigate the effect of the token generation rateand the token bucket size of a token bucket filter (TBF) on user-perceived performance at a subscriber level with a single subscriber. Then we investigate their effect at an access level where shaped traffic flows from multiple subscribers interact with one another in a common shared access network. The simulation results show that for a given token generation rate, a larger token bucket provides better user-perceived performance at both subscriber and access levels. It is also shown that the loose burst control resulting from the large token bucket — up to 100 MB for access line rate of 100 Mbit/s — does not negatively affect user-perceived performancewith multiple subscribers even in the presence of non-conformant subscribers; with a much larger token bucket, however, the negative effect of non-conformant subscribers on the user-perceived performance of conformant subscribers becomes clearly visible because the impact of token bucket size and that of token generation rate are virtually indistinguishable in this case. Journal Article Computer Networks 70 192 209 Elsevier BV 1389-1286 1 9 2014 2014-09-01 10.1016/j.comnet.2014.06.001 http://dx.doi.org/10.1016/j.comnet.2014.06.001 COLLEGE NANME COLLEGE CODE Swansea University 2021-10-29T20:49:51.6301369 2014-06-06T19:46:21.7477012 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Joseph Kim 1
title The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
spellingShingle The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
Joseph Kim
title_short The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
title_full The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
title_fullStr The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
title_full_unstemmed The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
title_sort The effect of ISP traffic shaping on user-perceived performance in broadband shared access networks
author_id_str_mv 28df2d8e401d3e36b6da4a4124049742
author_id_fullname_str_mv 28df2d8e401d3e36b6da4a4124049742_***_Joseph Kim
author Joseph Kim
author2 Joseph Kim
format Journal article
container_title Computer Networks
container_volume 70
container_start_page 192
publishDate 2014
institution Swansea University
issn 1389-1286
doi_str_mv 10.1016/j.comnet.2014.06.001
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
url http://dx.doi.org/10.1016/j.comnet.2014.06.001
document_store_str 0
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description Recent studies on the practice of shaping subscribers’ traffic by Internet service providers (ISPs) give a new insight into the actual performance of broadband access networks at a packet level. Unlike metro and backbone networks, however, access networks directly interface with end-users, so it is important to base the study and design of access networks on the behaviors of and the actual performance perceived by end-users. In this paper we study the effect of ISP traffic shaping using traffic models based on user behaviors and application/session-layer metrics providing quantifiable measures of user-perceived performance for HTTP, FTP, and streaming video traffic. To compare the user-perceived performance of shaped traffic flows with those of unshaped ones in an integrated way, we use a multivariate non-inferiority testing procedure. We first investigate the effect of the token generation rateand the token bucket size of a token bucket filter (TBF) on user-perceived performance at a subscriber level with a single subscriber. Then we investigate their effect at an access level where shaped traffic flows from multiple subscribers interact with one another in a common shared access network. The simulation results show that for a given token generation rate, a larger token bucket provides better user-perceived performance at both subscriber and access levels. It is also shown that the loose burst control resulting from the large token bucket — up to 100 MB for access line rate of 100 Mbit/s — does not negatively affect user-perceived performancewith multiple subscribers even in the presence of non-conformant subscribers; with a much larger token bucket, however, the negative effect of non-conformant subscribers on the user-perceived performance of conformant subscribers becomes clearly visible because the impact of token bucket size and that of token generation rate are virtually indistinguishable in this case.
published_date 2014-09-01T03:21:02Z
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score 11.036334

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