<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000'>Xiaozhou Li will present his research seminar/general exam on Tuesday January 22 at 10AM <br>in room 402. The members of his committee are: Michael Freedman (advisor), Jen Rexford, <br>and Vivek Pai. Everyone is invited to attend his talk, and those faculty wishing to remain for the <br>oral exam following are welcome to do so. His abstract and reading list follow below.<br>------------------------------------<br><font size="2">Title: Scaling IP Multicast on Datacenter Topologies<br>
<br>
Many datacenter applications experience multicast communication
patterns, and they could benefit from <br>the reduced bandwidth consumption
and server overhead from using IP multicast. Unfortunately, traditional<br> IP multicast management protocols, designed for arbitrary
service-provider or enterprise networks, do not <br>provide sufficient
scalability in the number of supported multicast groups. <br>
<br>
This paper examines how the unique topological structure of modern
datacenter networks can be leveraged <br>to increase group scalability. Our
basic approach carefully partitions the multicast address space and
assigns <br>them across switches in datacenters’ multi-rooted tree networks.
Our approach further improves scalability by <br>locally aggregating
multicast addresses at bottleneck switches, at the cost of slightly
inflating downstream traffic. <br>We evaluate the system’s scalability,
traffic overhead, and fault tolerance through a mix of simulation and
analysis. <br>Experiments show that a datacenter with 27,648 servers and
commodity switches can support up to 100,000 <br>multicast groups with 50
members on average, which allows each physical server to subscribe to
nearly 200 <br>multicast groups concurrently.</font><br><br><!--[if gte mso 9]><xml>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Textbook:</span></b><span style="font-size:9.0pt;mso-bidi-font-family:Arial"> </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Computer
Networks: A Systems Approach (5th edition), L. Peterson and B. Davie </span></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Papers:</span></b><span style="font-size:9.0pt;mso-bidi-font-family:Arial"> </span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;mso-bidi-font-family:Arial">Datacenter
Network</span></b><span style="font-size:8.0pt;mso-bidi-font-family:Arial"> </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">A
Scalable, Commodity Data Center Network Architecture [SIGCOMM 08] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">M.
Al-Fares, A. Loukissas, and A. Vahdat </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://cseweb.ucsd.edu/~malfares/comm298-alfares.pdf
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">VL2:
A Scalable and Flexible Data Center Network [SIGCOMM 09] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">A.
Greenberg, J. R. Hamilton, N. Jain, S. Kandular, C. Kim, P. Lahiri,D. A. Maltz,
P. Patel, and S. Sengupta </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://research.microsoft.com/pubs/80693/vl2-sigcomm09-final.pdf
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">F10:
Fault-Tolerant Engineered Networks </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">V.
Liu, D. Halperin, A. Krishnamurthy, and T. Anderson </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">ftp://ftp.cs.washington.edu/tr/2012/09/UW-CSE-12-09-05.PDF
</span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;mso-bidi-font-family:Arial">Multicast</span></b><span style="font-size:8.0pt;mso-bidi-font-family:Arial"> </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Dr.
Multicast: Rx for Data Center Communication Scalability [EuroSys 10] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Y.
Vigfusson, H. Abu-Libdeh, M. Balakrishnan, K. Birman, R. Burgess,G. Chockler,
H. Li, and Y. Tock </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://research.microsoft.com/pubs/120744/mcmd-eurosys.pdf
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">LIPSIN:
Line Speed Publish/Subscribe Inter-Networking [SIGCOMM 09] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">P.
Jokela, A. Zahemszky, C. E. Rothenberg, S. Arianfar, and P. Nikander </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://dl.acm.org/citation.cfm?id=1592592
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">SplitStream:
High-Bandwidth Multicast in Cooperative Environments [SOSP 03] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">M.
Castro, P. Druschel, A. Kermarrec, A. Nandi, A. Rowstron and A. Singh </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://research.microsoft.com/en-us/um/people/antr/PAST/SplitStream-sosp.pdf
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Ricochet:
Lateral Error Correction for Time-Critical Multicast [NSDI 07] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">M.
Balakrishnan, K. Birman, A. Phanishayee and S. Pleisch </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://www.cs.cmu.edu/~amarp/papers/ricochet_nsdi_2007.pdf
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">A
Reliable Multicast Framework for Light-weight Sessions and Application Level
Framing [TON 97] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">S.
Floyd, V. Jacobson, S. Mccanne, C. Liu and L. Zhang </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://dl.acm.org/citation.cfm?id=270863
</span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;mso-bidi-font-family:Arial">SDN
/ Network Management</span></b><span style="font-size:8.0pt;mso-bidi-font-family:
Arial"> </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Onix:
A Distributed Control Platform for Large-scale Production Networks [OSDI 10] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">T.
Koponen, M. Casado, N. Gude, J. Stribling, L. Poutevski, M. Zhu,R. Ramanathan,
Y. Iwata, H. Inoue, T. </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">Hama,
and S. Shenker </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">http://yuba.stanford.edu/~casado/onix-osdi.pdf
</span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">On
Controller Performance in Software-Defined Networks [Hot-ICE 12] </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;mso-bidi-font-family:Arial">A.
Tootoonchian, S. Gorbunov, Y. Ganjali, M. Casado, and R. Sherwood </span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;
mso-bidi-font-family:Arial;color:#1154CC">https://www.usenix.org/system/files/conference/hot-ice12/hotice12-final33_0.pdf</span></p>
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