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Why automate packet analysis for performance troubleshooting?



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.

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Topics: NPM, Network troubleshooting, wiredata

How to leverage a flow matrix for network monitoring



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!
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Topics: NPM, Network troubleshooting, network monitoring

Key differences between packet capture and real time stream analysis



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. 

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Topics: NPM, Network troubleshooting, Stream analysis

6 reasons to take a new approach to packet capture



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. 

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Topics: NPM, network performance, Network troubleshooting

How to measure network performance through passive traffic analysis


Whichever tool you use it is important to  understand the fundamentals of how network performance metrics (like latency, packet loss or throughput) can be calculated.This calculation can be manual with Wireshark or any other packet analyzer or automated with the NPM solution of your choice.
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Topics: performance troubleshooting, NPM, network performance, Network troubleshooting

How to capture traffic ? (SPAN vs TAP)



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).

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Topics: Network troubleshooting

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