Virtualization: An End or a Means? Larry Peterson Princeton University

Challenge Biases Think broadly about what it means to re-invent the Internet. –IP is done; let’s build the next thing on top of it Think about realizing our clean slate design and enticing users to take advantage of it. –there will be no validation of an architecture that has no users –there will be no uptake of an architecture that attracts no users

Slices: Overlay Level

Per-Node View Virtual Machine Monitor (VMM) Node Mgr Local Admin VM 1 VM 2 VM n …

Slices: Network Level

Overlay + Network

User Opt-in Client Server NAT

Another View Internet lightpaths optical switch

Per-Node View Router Substrate (RS) Node Mgr Local Admin VR 1 VR 2 VR n … Processing Engine(s) COTS PC Network Processor FPGA

Questions Is virtualization an end or a means? –I can wait for the answer Is more than “processors and pipes” necessary? –end-to-end reachability –service composition Are overlays sufficient? –is there functionality that cannot be provided by overlays –do overlays require (benefit from) network support