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TCP DUP ACK & Restransmission


Hi all

The wireshark capture seen in the screenshot below is between linux server and charging system, although the operation always succeed; but as you can see there are a lot of Retransmissions [ACK] always followed by [TCP DUP ACK] then [PSH, ACK] and [TCP Retransmission] before operation success. What could be these retransmission ?

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asked 08 Oct '17, 02:45

T_M_T's gravatar image

accept rate: 0%

One Answer:


Looks like your capture setup captured packets twice, so there are no real problems, just duplicates. See this blog post for details and solutions:

answered 08 Oct '17, 02:58

Jasper's gravatar image

Jasper ♦♦
accept rate: 18%