Hello! > why would congestion window validation prevents to have larger window at the > moment (time = 6.25s) Well, at this point it is to late to worry about this. cwnd is 2 here just because otherwise you would see a burst window was drained for whole rtt. It is not a question. Real phenomenon is observed _earlier_: at point 18:02:45.388802 in your tcpdump you should see some forward transmission or retrasmission to keep congestion window alive. But there are no eligible data to send, so cwnd is forced to reduce. Well, this is unavoidable when you lose too much in one window. Alexey - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
