[142506] in North American Network Operators' Group
Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3)
daemon@ATHENA.MIT.EDU (Hank Nussbacher)
Wed Jun 29 03:39:19 2011
Date: Wed, 29 Jun 2011 10:38:10 +0300 (IDT)
From: Hank Nussbacher <hank@efes.iucc.ac.il>
To: PC <paul4004@gmail.com>
In-Reply-To: <BANLkTi=xzzwc_vj=cA+aZLpZ5=M_tgFaUA@mail.gmail.com>
Cc: "williamejsalt@googlemail.com" <williamejsalt@googlemail.com>,
NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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
