1. TeraPaths TeraPaths:Configuring End-to-End Virtual Network Paths With QoS Guarantees Presented by Presented by Dimitrios Katramatos, BNL Dimitrios Katramatos, BNL

2. 2 Introduction  The problem: support efficient/reliable/predictable peta-scale data movement in modern high-speed networks  Multiple data flows with varying priority  Default “best effort” network behavior can cause performance and service disruption problems  Solution: enhance network functionality with QoS features to allow prioritization and protection of data flows  Treat network as a valuable resource  Schedule network usage (how much bandwidth and when)

3. 3 TeraPaths TheTeraPaths Service: Reserve End-to- End Paths with Guaranteed Bandwidth WAN WAN web services TeraPaths

4. 4 Prioritized vs. Best Effort Traffic

5. 5 Conceptual View of the Network TeraPaths Site A Site B Site C Site D WAN 1 WAN 2 WAN 3 service invocation data flow peering WAN chain

6. 6 TeraPaths TeraPaths Web Services Architecture Internal Services Public Services Web Interface Admin Module NDC Database protected network API remote local WAN Services WAN Services proxy

7. 7 TeraPaths TeraPaths Web Interface

8. 8 BNL testbed edge router BNL testbed (virtual) border router BNL border router ESnetUltraLight OSCARS UltraLight router at UMich TeraPaths peerin g at Chicag o test host NDC TeraPaths Current TeraPaths Testbed (end-to-end) 1 st end-to-end fully automated route setup BNL-ESnet-Umich on 8/17/06 @ 1:41pm EST

9. 9 Testbed Expansion Plans  Candidate Tier 2 sites for 2007 expansion:  University of Michigan / Michigan State University  University of Chicago / Indiana University  University of Oklahoma / University of Texas at Arlington  Boston University / Harvard University  SLAC (?)  More?  Further expand to more Tier 2 and lower tier sites  Web Page: www.racf.bnl.gov/terapaths