Discovering ways to subset traffic
Packet analysis is used for a variety of reasons, including troubleshooting, testing, monitoring, and baselining the network. Although we can reduce the file size before we begin our analysis by using a capture filter, many times we gather all the traffic so that we don't miss any important details. Then, once captured, the file can be shared with other members of the team for further analysis or to point out specific issues.
While capturing traffic, it's optimal to get a capture that is the perfect size and includes only the troublesome packets. However, that is not always the case. At times, you may find you have to work with a large file, for a variety of reasons that include the following:
- You have obtained the capture from a network device with a large amount of traffic. Tapping into the network, even for a short time, can generate a huge number of packets. Even if you used a capture filter while obtaining the file, you may...
