TCP connection Throughput can never exceed beyond the ratio of RWIN and RTT (Througput <= RWIN/RTT) Reference http://en.wikipedia.org/wiki/TCP_tuning
Regards, Amjad Ul Hasnain Qasmi -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Joseph Mays Sent: 30 November, 2011 1:25 AM To: [email protected] Subject: [c-nsp] FTP Throughput Running tests on FTP throughput from a windows ftp client across two T3 hops to an ftp server running on FreeBSD unix. Pretty much all the bandwidth on both T3's is available. Total latency averages about 3ms. The customer on the end of the t3 is complaining that they can't get faster than 600KB per second anywhere. I get about 1000KB (8mbps) on a file transfer. I can start multiple file transfers, simultaneously, all top out at about that speed. The customer is demanding to know why they can't transfer files at, say, 40mbps. I am assuming the answer is something to do with TCP window size, but how do I prove that? Joe _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
