Lec3 - CS244 Winter 2011 Lecture 3 Architecture and...

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1. Active Networking and End-to-End Arguments [Reed et al 1998] 2. Is IP going to take over the world? [Molinero et al, 2002] Nick McKeown CS244 Winter 2011 Lecture 3 Architecture and Principles
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2 Active Networking and End-to-End Arguments [Reed et al. 1998] Context During mid-1990s lots of research on “Active Networks” Controversial topic Good reference “Towards an Active Network Architecture”, David Tennenhouse and David Wetherall, Computer Communication Review, April 1996. (SIGCOMM Test-of-Time Award)
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Evolved end-to-end principle “Moving functions and services upward in a layered design, close to the application(s) that use them, increases the flexibility and autonomy of the application designer to apply those functions and services to the specific needs of the application.” 3
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Conflict On one hand “…programmability in a lower layer can be seen as a means to defer design choices upwards in the layering…” i.e. active network can “push up” functionality. On the other hand “a general programming interface can lead to complex and unpredictable interactions among independently 4
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Leading to two goals Application autonomy : Higher layers are expected to organize lower layer resources for
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Lec3 - CS244 Winter 2011 Lecture 3 Architecture and...

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