This is our old Q&A Site. Please post any new questions and answers at

When I see the trace in wireshark, what I see is the client sending DUP ACK to the server and the server keeps on Retransmitting the data? What does this situation signify? How to correct this?

asked 25 Sep '13, 06:36

Vaibhav%20Khare's gravatar image

Vaibhav Khare
accept rate: 0%

edited 25 Sep '13, 11:21

cmaynard's gravatar image

cmaynard ♦♦

Your situation is not clear. Do you have a trace that you can upload to If not: how many DUP ACKs do you see? are they all for the same packet, or are there many DUP ACKs for different packets? Are the retransmissions for the same packet, or for different packets? How did you capture? On a SPAN port? Multiple source ports/VLANs, or just one port?

(25 Sep '13, 10:18) Jasper ♦♦
Be the first one to answer this question!
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text]( "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 25 Sep '13, 06:36

question was seen: 2,003 times

last updated: 25 Sep '13, 11:21

p​o​w​e​r​e​d by O​S​Q​A