Characterization of Internet AS-Level Paths
碩士 === 國立臺灣大學 === 資訊工程學研究所 === 94 === Characterization of Internet paths is important because it helps network operators and researchers better understand how packets travel over the Internet, and allows them to evaluate proposed mechanisms with confidence under realistic network path generating con...
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ndltd-TW-094NTU053920022015-12-16T04:32:14Z http://ndltd.ncl.edu.tw/handle/03186324847643363429 Characterization of Internet AS-Level Paths 在網際網路下自治系統層級的路徑特性分析研究 Ming-Tsang Tsai 蔡明倉 碩士 國立臺灣大學 資訊工程學研究所 94 Characterization of Internet paths is important because it helps network operators and researchers better understand how packets travel over the Internet, and allows them to evaluate proposed mechanisms with confidence under realistic network path generating conditions. Some researchers have concluded that shortest path routes are reasonable for studying large-scale behavior of network paths in terms of path length. However, whether shortest path routing is suitable for general network simulations remains an open question. Motivated by this question, we analyze Internet AS-level paths and find that, although shortest paths and Internet AS-level paths are similar in length, they are very different in the AS-level links traversed. Further examination of the distribution of traffic by shortest paths and Internet AS-level paths shows that the difference persists irrespective of whether representative shortest paths or shortest policy paths are chosen. We find that neither shortest path routing nor shortest policy path routing accurately capture the distribution of traffic generated by Internet AS-level paths. To facilitate the generation of realistic Internet AS-level paths, we propose a preference-ratio random-walk model that leverages BGP routing tables to obtain preference ratios for the selection of subsequent hops. The results of our evaluations show that the proposed model can characterize Internet AS-level paths effectively. Hao-Hua Chu 朱浩華 2006 學位論文 ; thesis 36 en_US |
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碩士 === 國立臺灣大學 === 資訊工程學研究所 === 94 === Characterization of Internet paths is important because it helps network operators and researchers better understand how packets travel over the Internet, and allows them to evaluate proposed mechanisms with confidence under realistic network path generating conditions. Some researchers have concluded that shortest path routes are reasonable for studying large-scale behavior of network paths in terms of path length. However, whether shortest path routing is suitable for general network simulations remains an open question.
Motivated by this question, we analyze Internet AS-level paths and find that, although shortest paths and Internet AS-level paths are similar in length, they are very different in the AS-level links traversed. Further examination of the distribution of traffic by shortest paths and Internet AS-level paths shows that the difference persists irrespective of whether representative shortest paths or shortest policy paths are chosen. We find that neither shortest path routing nor shortest policy path routing accurately capture the distribution of traffic generated by Internet AS-level paths.
To facilitate the generation of realistic Internet AS-level paths, we propose a preference-ratio random-walk model that leverages BGP routing tables to obtain preference ratios for the selection of subsequent hops. The results of our evaluations show that the proposed model can characterize Internet AS-level paths effectively.
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author2 |
Hao-Hua Chu |
author_facet |
Hao-Hua Chu Ming-Tsang Tsai 蔡明倉 |
author |
Ming-Tsang Tsai 蔡明倉 |
spellingShingle |
Ming-Tsang Tsai 蔡明倉 Characterization of Internet AS-Level Paths |
author_sort |
Ming-Tsang Tsai |
title |
Characterization of Internet AS-Level Paths |
title_short |
Characterization of Internet AS-Level Paths |
title_full |
Characterization of Internet AS-Level Paths |
title_fullStr |
Characterization of Internet AS-Level Paths |
title_full_unstemmed |
Characterization of Internet AS-Level Paths |
title_sort |
characterization of internet as-level paths |
publishDate |
2006 |
url |
http://ndltd.ncl.edu.tw/handle/03186324847643363429 |
work_keys_str_mv |
AT mingtsangtsai characterizationofinternetaslevelpaths AT càimíngcāng characterizationofinternetaslevelpaths AT mingtsangtsai zàiwǎngjìwǎnglùxiàzìzhìxìtǒngcéngjídelùjìngtèxìngfēnxīyánjiū AT càimíngcāng zàiwǎngjìwǎnglùxiàzìzhìxìtǒngcéngjídelùjìngtèxìngfēnxīyánjiū |
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