The graph's direction is in the upper part of the window. Click Statistics, TCP Stream Graphs, and TCP Graph (Stevens).Ī new window opens with the Stevens TCP graph. Next, open one of the TCP diagrams and plot the connection. Selecting any packet in the packet list is sufficient. To open a graph, you must select a packet belonging** to the relevant connection in the packet list. TCP Graphs BasicsĪll TCP graphs, whether Stevens or the trace flavor, represent one TCP connection in one direction.
In this PacketSafari article, we will start from the basics, work our way to more advanced concepts, and provide clear patterns to look for when troubleshooting a TCP connection. There are two versions of the time sequence graph, the more straightforward Stevens graph** and the more advanced TCP trace graph.
#Constant tcp retransmission wireshark how to
This article will teach you how to interpret TCP connections using the TCP time-sequence graphs. Wireshark offers a couple of graphs for TCP analysis: RTT, throughput, window scaling, and the time sequence graphs. Having a basic understanding of how Wireshark visualizes packet information in a TCP graph, you can take shortcuts in the analysis workflow and avoid spending many hours looking for patterns that are barely visible in the limited perspective of the packet list. We use shared hosting and none of their customers had similar issue, also I can confirm it works everywhere else.Why don't you use graphs instead? They are a powerful tool in a packet analyst's craft. You could say this is hosting problem, but no, I talked to hosting a lot, no help. It might sound like question for server fault but error happens only on Ubuntu so that's why I ask my question here. I also tried to change sysctl _sackĪnd no success. One computer uses default network manager, another one wicd network manager. Last test with brand new router gave me 648 x OK, 562 x ERR This is script I wrote to check does issue exists: #!/bin/bash
#Constant tcp retransmission wireshark windows
Works fine on same ubuntu machines when booted into Windows.Works fine on CentOS server and Windows computers in office.but if I got retransmission errors before I connecto to SSH I can't connect to SSH anymore!.even if I get retransmission errors later on. when I connect to SSH I can stay connected forever.issue appears with only that website everything on internet used to works fine for years but on another hand that website works just everywhere even on same computers with windows.I can ping server constantly with zero issues, we changed router, called ISP, everything is fine. Same error happen with FTP - I can connect to FTP, it works fine for first few commands then it's dead for couple of minutes. And for couple of minutes I can't connect to anything TCP-related.
It's always like this: I can connect to website 3-4 times fine then all TCP packet are retransmitted without success (see screenshot). We have couple of computers in office but only two of them have issues connecting to our company website.
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