how to find the packet loss in Wireshark?

Question

Hi,

i need to test packetloss for FTP application.

i used wireshark packet sniffer and I got TCP Stream.

Help me how to find the packet loss using Wireshark.

Thanks in advance,

krishna

Answer 1

[Zr40 points out below that this part is wrong: To expand on my comment - Wireshark does tell you the number of dropped packets in the status bar at the bottom (I just ran a sample capture and it says "Packets: 65 Displayed: 65 Marked: 0 Dropped: 0") but I'm not certain whether you'll get the same results out of it depending on which end you're running it at.]

In which case - I suppose you'd need to run Wireshark at each end and look at the packet statistics (number of packets A->B, B->A) and compare the differences. You can't rely on TCP retries etc as this doesn't necessarily mean the packet is lost.

Also, you'll need to set up a capture filter for FTP only unless you want your statistics to be skewed by other stuff like ARPs, DNS lookups, etc.