Using Wireshark to Troubleshoot Network Connectivity Issues: Conversation Filter

In addition to the “Follow TCP Stream,” “Decode As,” “IO Graphs,” “Expert Infos,” and “Time Sequence Graph (tcptrace)” features, Wireshark also includes a tool called the “Conversation Filter” that allows you to view the packets being exchanged between two specific devices or between devices using a specific protocol.

To use the “Conversation Filter” feature, simply select the “Statistics” menu and then choose “Conversations.” This will open a new window that displays a list of all the conversations that have been captured.

You can use the “Conversation Filter” feature to view the packets being exchanged between two specific devices or between devices using a specific protocol. To filter the conversations, you can use a variety of criteria, including the source and destination addresses, the protocol being used, and various other packet attributes.

The “Conversation Filter” feature is especially useful when you want to focus on a specific set of packets and see how they are being exchanged between devices. By using the “Conversation Filter” feature in combination with other diagnostic tools, such as the “Follow TCP Stream” and “IO Graphs” features, you can gain a deeper understanding of the traffic on your network and identify potential problems.

How to Use the Conversation Filter
To use the “Conversation Filter” feature in Wireshark, follow these steps:

Select the “Statistics” menu and then choose “Conversations.”
In the “Filter” field at the top of the window, enter the criteria that you want to use to filter the conversations.
Click the “Apply” button to apply the filter and display the filtered conversations.
For example, if you want to see the packets being exchanged between two specific devices, you can enter the IP addresses of the devices in the “Filter” field. If you want to see the packets being exchanged between devices using a specific protocol, you can enter the name of the protocol in the “Filter” field.

With a little bit of practice and a thorough understanding of the features and techniques available in Wireshark, you can become an expert at troubleshooting network issues and keeping your network running smoothly

Using Wireshark to Troubleshoot Network Connectivity Issues: Time Sequence Graph (tcptrace)

In addition to the “Follow TCP Stream,” “Decode As,” “IO Graphs,” and “Expert Infos” features, Wireshark also includes a tool called the “Time Sequence Graph (tcptrace)” that allows you to visualize the flow of traffic between two devices over time.

To use the “Time Sequence Graph (tcptrace)” feature, simply select the “Statistics” menu and then choose “TCP Stream Graphs.” This will open a new window that allows you to choose the stream that you want to visualize.

The “Time Sequence Graph (tcptrace)” feature shows the flow of traffic between two devices over time, with the x-axis representing time and the y-axis representing the sequence numbers of the packets being sent. You can use this tool to identify any problems with the flow of traffic, such as delays or missing packets.

By using the “Time Sequence Graph (tcptrace)” feature in combination with other diagnostic tools, such as the “Follow TCP Stream” and “IO Graphs” features, you can gain a deeper understanding of the traffic on your network and identify potential problems. With a little bit of practice and a thorough understanding of the features and techniques available in Wireshark, you can become an expert at troubleshooting network issues and keeping your network running smoothly.

Using Wireshark to Troubleshoot Network Connectivity Issues: Expert Infos

In addition to the “Follow TCP Stream,” “Decode As,” and “IO Graphs” features, Wireshark also includes a tool called “Expert Infos” that provides valuable information and insights about the packets being captured.

To use the “Expert Infos” feature, simply select the “Statistics” menu and then choose “Expert Infos.” This will open a new window that displays a list of all the packets being captured, along with any expert infos that are available.

Expert infos are messages generated by Wireshark that provide additional information about the packets being captured. There are three levels of expert infos: “Notes,” “Warnings,” and “Errors.” Notes provide general information about the packets, warnings indicate potential problems with the packets, and errors indicate serious problems with the packets.

You can use the “Expert Infos” feature to identify any issues with the packets being captured, such as problems with the protocol being used or errors in the packet contents. By using the “Expert Infos” feature in combination with other diagnostic tools, such as the “Follow TCP Stream” and “IO Graphs” features, you can gain a deeper understanding of the traffic on your network and identify potential problems.

With a little bit of practice and a thorough understanding

Using Wireshark to Troubleshoot Network Connectivity Issues: IO Graphs

In addition to the “Follow TCP Stream” and “Decode As” features, Wireshark also includes a useful tool called “IO Graphs” that allows you to visualize the traffic on your network in a graphical format.

To use the “IO Graphs” feature, simply select the “Statistics” menu and then choose “IO Graphs.” This will open a new window that allows you to customize the graph according to your needs.

You can use the “IO Graphs” feature to identify patterns in the traffic and see how different devices are interacting with each other. For example, if you see a sudden spike in the traffic on your network, you can use the “IO Graphs” feature to identify which device or devices are causing the spike and determine the cause.

You can also use the “IO Graphs” feature to identify any problems with the traffic on your network, such as slow performance or connectivity issues. By visualizing the traffic in this way, you can often identify the root cause of the problem and take the appropriate action to fix it.

With a little bit of practice and a thorough understanding of the features and techniques available in Wireshark, you can become an expert at troubleshooting network issues and keeping your network running smoothly.