On 10/22/06, Pekka Savola <pekkas@xxxxxxxxxx> wrote:
On Fri, 20 Oct 2006, H.K. Jerry Chu wrote: > Note that window scaler = 9 so you'll have to multiple max win adv, > e.g., by 512. Also the data is collected on the xmit side below > netem so I'm not sure how useful it is. ... > Ostermann's tcptrace -- version 6.6.7 -- Thu Nov 4, 2004 > req 1323 ws/ts: N/Y req 1323 ws/ts: N/Y It's difficult for me to understand the result (because the window below is larger than 64K), but at least this seems strange -- as if the Window Scaling option was not enabled at all. In tcptraces I have (with 6.6.1 though), these are Y/Y and tcptrace shows the window scaling factor. You say it's 9, but that isn't shown anywhere in the trace below. Maybe you cut'n'pasted a wrong trace?
No, I just did not run tcpdump from the beginning because it took a while for the cwnd to open up and the pcap file might be too large. When SYN/SYN-ACK is not included in pcap tcptrace has no idea what option/value got negotiated. Jerry
-- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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