summary and follow-up: transparent tcp improvements
"Karl Jonas" <karl.jonas@fokus.fhg.de> Tue, 16 April 2002 08:37 UTC
Reply-To: <karl.jonas@ieee.org>
From: "Karl Jonas" <karl.jonas@fokus.fhg.de>
To: <tcpsat@grc.nasa.gov>
Subject: summary and follow-up: transparent tcp improvements
Date: Tue, 16 Apr 2002 10:37:20 +0200
Message-ID: <OHEFJNMPOIMBPIIHGBDCMENDCFAA.karl.jonas@fokus.fhg.de>
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Dear Experts, thank you very much for all the replies that I received. The SUMMARY (fyi) seems to be, that - "TCP Spoofing" as described in RFC 3135 does what I want - A paper on its performance suggests that while the transmission on the wired part is heavily increased, the performance experienced by the mobile user (behind the long delay link) is not http://roland.grc.nasa.gov/~jishac/papers/2001/TCP_Spoofing.pdf - SCPS-TP ( http://www.scps.org ) was suggested as a sulution, but I didn't go into the spec yet to figure out if it is sufficient to have that software on the gateway only (without modifying sender/receiver). The FOLLOW-UP question is: Is there experience with tcp spoofing, increasing the throughput from the sender over the wired network towards the gateway, and removing slow-start (and possibly modifying congestion avoidance) (by the gateway) towards the mobile terminal behind the (long delay and fully controlled) wireless link ? tcp sender -- (network) -- gateway -- (wireless link) -- mobile receiver (no modifications on sender/receiver, low bandwidth and long dely on the wireless link, many small tcp connections as typically in http / www-traffic) karl -- Prof. Dr. Karl Jonas EMail: karl.jonas@ieee.org University of Applied Science FhG FOKUS CC SATCom Grantham-Allee 20 Schloss Birlinghoven 53757 Sankt Augustin D-53754 Sankt Augustin Tel: +49 (0)2241 865244 +49 (0)2241 141599 Fax: +49 (0)2241 141050 WWW: www.gmd.de/people/Karl.Jonas/