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