FAST TCP for Multi-Gbps WAN: Experiments and Applications

Outline

High Speed Challenges

New TCP Stacks

Typical testbed

Testbed Collaborators and sponsors

Windows and Streams

Even with big windows (1MB) still need multiple streams with Standard TCP

Stock vs FAST TCP
MTU=1500B

TCP stacks with 1500B MTU @1Gbps

Jumbo frames, new TCP stacks at 1 Gbits/s

Production network tests

High Speed TCP vs Reno – 1 Stream

Slide 14

Slide 15

Scalable vs multi-streams

FAST & Scalable vs. Multi-stream Reno (SLAC>CERN ~230ms)

Scalable & FAST TCP with 1 stream vs  Reno with n streams

Fairness FAST vs Reno

Summary (very preliminary)

What’s next?

More Information

Extras

FAST TCP vs. Reno – 1 stream

Scalable vs. Reno - 1 stream

Other high speed gotchas