UDP protocol analysis and troubleshooting
While most of the applications using UDP are tolerant to packet loss, a substantial packet loss for any UDP stream may result in a very frustrating end user experience. In this section, we will discuss some of the common causes for UDP stream failure and how Wireshark can be used to analyze and troubleshoot such failures.
Getting ready
When the UDP stream is not functioning properly, the very first step is to ensure that the network connectivity to the remote host is working fine. This is verified by using a utility tool such as Ping or Traceroute. Troubleshooting of any failure in network connectivity can be performed as defined in Chapter 10, Network Layer Protocols and Operations. If the network connectivity is fine, we do the following procedure.
How to do it...
Figure 11.4: UDP topology
In the preceding diagram, the end application using the UDP stream between PC1 (10.1.100.101) and PC3 (10.1.200.101) is not functioning properly:
- Ensure that the UDP...
