[email protected] wrote on 11/29/2011 04:24:15 PM: >> On Nov 29, 2011, at 3:24 PM, Joseph Mays wrote: >> >> 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? > > do both UDP and TCP tests.
For the UDP tests, check to see if there is packet loss. With a RTT of 3ms, TCP window size won't matter. Joe _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
