There are many ways to analyze network traffic. Flows provided by network devices to reflect traffic volumes are one way; packet analysis is the other way.
A flow matrix is a representation of the IP traffic map; it can be used in many ways to troubleshoot, monitor and optimize network infrastructures. Let's take a closer look at all the use cases for the traffic matrix!
Network administrators rely on network traffic analysis to troubleshoot complex problems and specifically performance degradations. The usefulness of network analysis solutions is obvious to all of them.
The main question raised by most network teams is how fast can we get to the root cause and which tools can really help us.
Traditionally network administrators have learnt to use packet analysis for troubleshooting complex problems. Some invested in expensive traffic capture appliance to capture and retain the traffic for later analysis; in case they get reports for a performance degradation, they can extract trace files and load them into a network analyzer (Wireshark or commercial) and look at packets.
This is an extract from Performance Vision’s Users Guide. As this is useful data for most users, we have decided to publish it on our blog.PerformanceVision can rely on two mechanisms to capture network traffic: Port Mirroring (commonly called SPAN) & TAP (Terminal Access Point).
Topics: Network troubleshooting