Changes between Version 22 and Version 23 of SCAFFOLD

Timestamp:

08/15/10 18:28:02 (14 years ago)

Author:

mfreed@cs.princeton.edu

Comment:

--

SCAFFOLD

@@ -14 +14 @@
 '''PI:''' Michael Freedman, Princeton University [mailto:mfreed@cs.princeton.edu][[BR]]
 Jennifer Rexford, Princeton University [mailto:jrex@cs.princeton.edu][[BR]]
-Steven Y. Ko [mailto:steveko@cs.princeton.edu][[BR]]
 Erik Nordstrom [mailto:enordstr@cs.princeton.edu]
 
@@ -29 +28 @@
 == Scope ==
 
-The project will build and deploy SCAFFOLD (Service-Centric
-Architecture For Flexible Object Localization and Distribution), a
-platform for designing and operating wide-area distributed services on
-GENI. SCAFFOLD will be a distributed service on GENI that serves as a
-platform for deploying user-facing services, thereby lowering the
+Online services, replicated on multiple servers in different datacenters, have 
+(at best) a loose, and often transient, association with specific end-hosts or
+locations.  Yet, today, these services rely on host-centric networking
+primitives designed decades ago, retrofitted with various "hacks" (e.g., ARP
+spoofing and DNS with small TTLs).[[BR]]
+
+This project proposes a network architecture
+that meets the needs of these online services.  SCAFFOLD (Service-Centric
+Architecture For Flexible Object Localization and Distribution) moves from
+human-readable host names to machine-readable service identifiers, from
+individual packets to flows, and from unicast communication to anycast.
+SCAFFOLD hides network addresses from applications to enable dynamic remapping
+as end-points change, (e.g., due to virtual-machine migration, failover, or
+device mobility), and directs traffic based on successively-refined identifiers
+to scale routing and limit churn.  While SCAFFOLD can be viewed as a
+clean-slate Internet architecture, we primarily investigate how a single
+organization can apply our solution today to host online services at multiple
+datacenters. This project entails the design, implementation, and evaluation of a socket
+API and network stack for end-hosts, and a network infrastructure built using
+OpenFlow and NOX.[[BR]]
+
+SCAFFOLD will be a distributed service on GENI that serves as a
+platform for deploying other user-facing services, thereby lowering the
 barrier for others creating new distributed services. SCAFFOLD will
 leverage GENI-related prototyping efforts such as !OpenFlow switches,
 the NOX controller, the VINI backbone, the BGP multiplexer and the
-PlanetLab control framework. The project will use SCAFFOLD to build
-three services for GENI: A reliable DNS, a port of CoralCDN and a
-Flash-based video-on-demand service.
+PlanetLab control framework. The project will also use the resulting SCAFFOLD prototype itself to build
+several services for GENI, in order to demonstrate its utility.
 
 === Current Capabilities ===
 
-BRIEF descriptions of resources/functions/tools that are available to anyone in the GENI community
 
 === Milestones ===
@@ -61 +76 @@
 
 [attachment:scaffold-Mar01-demo.pdf Description of a SCAFFOLD demonstration.][[BR]]
-[attachment:scaffold-poster-gec7.pdf SCAFFOLD poster at GEC7.]
+[attachment:scaffold-poster-gec7.pdf SCAFFOLD poster at GEC7.][[BR]]
+[attachment:scaffold-talk-June20.pdf SCAFFOLD presentation (June '10).][[BR]]