We’ll discover how collecting network flow data can help solve the mysteries on your own network, giving you practical insight into everyday problems. A case study on a live network will be presented to demonstrate a practical application of sFlow. Learn about the tools we need to follow the trail of clues, find the culprit, and solve the mystery.
Cast of Characters
Examining a live network, we are given clues that a small office LAN’s internet connection has suddenly become unusable. Suspecting the network connection is saturated, we try to round up the usual suspects with SNMP graphs, interface counters, and log entries. From these we learn that something on the LAN is consuming a lot of bandwidth, but who is the culprit? We will implement sFlow collection and show how easy it is to quickly solve the case. We’ll generalize the example to show how it can fit any number of common scenarios.
Bill Green started his career working for various ISPs in the San Francisco Bay Area in the mid 1990s. His primary skill-set is network engineering, with a special interest in monitoring and automation. Bill greatly enjoys talking to others about their experiences, and sharing information about the different problems we’ve solved.