交通大學IBM中心特別邀請到ECE Department at New York University 的 Prof. H. Jonathan Chao 前來為我們演講，歡迎有興趣的老師與同學免費報名參加！
演講標題：CFR-RL: Traffic Engineering with Reinforcement Learning in SDN
演 講 者：Prof. H. Jonathan Chao (ECE Department at New York University)
時 間：2020/01/20(一) 15:00 ~ 17:00
地 點：交大工程四館816室
活動報名網址：https://forms.gle/k5txEfTX6jM7PBR98
聯絡方式：曾紫玲 Tel：03-5712121分機54599 Email：tzuling@nctu.edu.tw
Abstract:
Traffic Engineering (TE) is one of important network features for Software-Defined Networking (SDN) with an aim to help Internet Service Providers (ISPs) optimize network performance and resource utilization by configuring the routing across their backbone networks. Although TE solutions can achieve the optimal or near-optimal performance by rerouting as many flows as possible, they do not usually consider the negative impact, such as packet out of order, when frequently rerouting flows in the network. To mitigate the impact of network disturbance, one promising TE solution is forwarding the majority of traffic flows using Equal-Cost Multi-Path (ECMP) and selectively rerouting a few critical flows using SDN to balance link utilization of the network. However, critical flow rerouting is not trivial because the solution space for critical flow selection is immense. Moreover, it is impossible to design a heuristic algorithm for this problem based on fixed and simple rules, since rule-based heuristics are unable to adapt to the changes of the traffic matrix and network dynamics. In this talk, we describe a Reinforcement Learning (RL)-based scheme, called CFR-RL, that learns a policy to select critical flows for each given traffic matrix automatically. It then reroutes these selected critical flows to balance link utilization of the network by formulating and solving a simple Linear Programming (LP) problem. Extensive evaluations show that CFR-RL outperforms the best heuristic by 7.4% - 12.2% and reroutes only 10% - 21.3% of total traffic.
Biography:
H. Jonathan Chao is Professor of Electrical and Computer Engineering (ECE) at NYU, where he joined in January 1992. He is currently Director of High-Speed Networking Lab. He was Head of ECE Department from 2004-2014. He has been doing research in the areas of software defined networking, network function virtualization, datacenter networks, packet processing and switching, network security, and machine learning for networking. He holds 63 patents and has published more than 265 journal and conference papers. During 2000–2001, he was Co-Founder and CTO of Coree Networks, NJ, where he led a team to implement a multi-terabit router with carrier-class reliability. From 1985 to 1992, he was a Member of Technical Staff at Bellcore, where he was involved in network architecture designs and ASIC implementations, such as the world’s first SONET-like Framer chip, ATM Layer chip, Sequencer chip (the first chip handling packet scheduling), and ATM switch chip. He is a Fellow of National Academy of Inventors (NAI) for “having demonstrated a highly prolific spirit of innovation in creating or facilitating outstanding inventions that have made a tangible impact on quality of life, economic development, and the welfare of society.” He is a Fellow of the IEEE for his contributions to the architecture and application of VLSI circuits in high-speed packet networks. He received Bellcore Excellence Award in 1987. He is a co-recipient of the 2001 Best Paper Award from the IEEE Transaction on Circuits and Systems for Video Technology. He coauthored three networking books. He worked for Telecommunication Lab in Taiwan from 1977 to 1981. He received his B.S. and M.S. degrees in electronics engineering from National Chiao Tung University, Taiwan, in 1977 and 1980, respectively, and his Ph.D. degree in electrical engineering from The Ohio State University in 1985.
taiwan fixed network 在 Re: [問題] 疑似被程式試密碼- 看板SYSOP 的美食出口停車場
沒想到，我也遇到了
[04/16/2020 00:06:14 Thu] 101.127.59.83
城市名稱： Singapore
經度緯度： 經度：103.873 緯度：1.398
電訊名稱： StarHub
單位名稱： StarHub Ltd
時區單位： Asia/Singapore (UTC +08:00)
[04/20/2020 16:54:26 Mon] 106.1.248.25
城市名稱： Tainan City
經度緯度： 經度：121.000 緯度：23.500
電訊名稱： kbro
單位名稱： Taiwan Fixed Network, Telco and Network Service Provider.
時區單位： Asia/Taipei (UTC +08:00)
第二個是台灣的，剛看其他類似討論串板友先前推文，
說台灣固網常被五毛利用，應該就是第二個吧？
在這邊留下紀錄，給大家參考
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一月中和二月中，曾在比較政治性質的YT影片留言，結果沒多久被來自澳洲和南韓
的IP要試圖還原我用了17年的Google帳號...還好有手機驗證確認機制，選擇否。
否則豈非所有郵件和資料都被還原?!
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還有
這個影片中
https://www.youtube.com/watch?v=h8IEtlOVzq4
Thank you very much for this interview. It totally clarified in one
presentation all of the bits and pieces I have been hearing plus more. Now I
know how I should think about these matters. I recently purchased Canon
printers and in their Terms and Conditions of using their app is that
anything I print will be sent to China. I called Canon and after much
persistence they finally admitted that--pictures, documents, files, etc. WILL
BE sent to China. I haven't used the printer. I appreciate Brigadier General
Spalding's intensity in protecting our Constitution and our freedoms. Thank
you Sir.
有人知道這件事嗎？我看了很驚訝...雖然我沒用Canon printer
不知道是不是那位網友所在國家(應該是美國?)的Canon使用者
才會配合將列印資料送給中國
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抱歉，這篇文章講了三件事，只有第一件和PTT有關，但我半個月沒上站發現被踹帳密
，突然想到第二、三件事，還沒跟人說過@@
資安相關產品真的使用都要小心
※ 引述《swimfish (別忘了去築一條橋)》之銘言：
: ※ 引述《nogard ()》之銘言：
: : 找了一下好像沒有更適合的看板，只好先貼這邊了，
: : 若有此類問題的專板，再麻煩各位幫忙指引。
: : 偶爾就會看到一些登入失敗紀錄，倒也不足為奇，但是最近看到這個紀錄：
: : [03/27/2020 22:21:07 Fri] 111.184.184.71
: : [03/27/2020 22:21:07 Fri] 111.184.184.71
: : [03/27/2020 22:21:07 Fri] 111.184.184.71
: : 一秒鐘試三次？這個就滿可疑的，看起來滿像是惡意的行為。
: : 不知道有沒有其他人有碰到這個狀況？
: 想請問站務 人為輸入應該無法在一秒/兩秒內登入三次
: 就算無法永久把這IP停用
: 但是不是也要停止使用一陣子
: 都無作為 這樣使用的人也會人心惶惶阿
: 讓這些try IP的知道這不是那麼容易的
: 看起來都是這陣子被攻擊 不管有沒有使用什麼軟體都會有這個狀況
: 請站務想點辦法了！感謝！
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※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 36.225.136.53 (臺灣)
※ 文章網址: https://www.ptt.cc/bbs/SYSOP/M.1589026020.A.896.html
※ 編輯: EVASUKA (36.225.136.53 臺灣), 05/09/2020 20:08:34
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