
So, if this Dup ACK occurs frequently, it is probable that packet loss has occurred less frequently. If the opponent comes send this many times, it will be considered that he does not receive a packet of Seq # = 1000, and he requests a retransmission. įor example, when Ack# = 1000, it means " Next, I want to get the packet Seq#=1000 !". The mark is displayed when "The same Ack#(acknowledgment number) is observed compared as the one before packet.

It has been received prior to the start of capturing.

This is displayed when the "As far as we see the Seq#(sequence number) of the packet, a packet should be observed before this packet but not seen in Wireshark".Ĭause of not capturing a packet before are perhaps two of either following.
