Hello! > congestion avoidance after fast retransmit/recovery, and the window size > (cwnd) is set to 2 segments rather than half of the cwnd before entering > fast retransmit. Apparently, congestion window validation prevents to have larger window at the moment. This is normal when lots of segments was lost and when connection had full RCV.WND. > sequence # vs. time plot at > http://www.cs.berkeley.edu/~shelleyz/temp/roam_mipv6_100ms_sack.eps Sigh... next time, please, make plain straight tcpdump, better binary. Pictures of this kind are almost unreadable. 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