On Tue, 28 Jun 2011, PC wrote:
As for VSAT, most every vsat equipment manufacturer has TCP acceleration/proxy support built into the satellite modem. They basically forge acks at the hub site to buffer data from the server, then deliver it it to the remote end in a continuous flow. Many also have protocol optimizations for some of the more "chatty" protocols. If you use it, your 10 megabit should be achievable for typical HTTP/FTP consumer internet activities, and it's surprisingly fast. I've sustained 6 without issue on VSAT, only limited by bandwidth available, doing a simple SCP file transfer.
This reminds me of the work I did in 1999 on getting T3 sat links to fully utilize the full 45Mb/sec: http://www.interall.co.il/internet2-takes-to-the-air.pdf -Hank