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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

Performance degradation, the top 10 causes for network slowness


Diagnosing network performance issues is part of your daily work. Whatever the network diagnostic tools you use, it is important to understand what are the symptoms of network performance degradations and what are the most likely root causes for them. 

Accelerating troubleshooting operations is key to maintain the business productivity through excellent end-to-end user performance rates. 

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Topics: performance troubleshooting, NPM, network performance, Network troubleshooting

How Wireshark users can scale up their network troubleshooting capabilities



Wireshark is the most famous protocol / packet analyzer on the market! Almost any engineer use Wireshark for troubleshooting network / application issues.

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Topics: NPM, Network troubleshooting, Wireshark

How to make a better use of your network sniffer


We see more and more network teams investing in NAPM (Network and Application Performance Management) solutions, while they already have network sniffers / packet analyzers in place and are perfectly litterate when it comes to viewing and looking at network packets.

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Topics: NPM, Network troubleshooting

Network performance: Links between latency, throughput and packet loss



When troubleshooting network degradation or outage, we need to find ways to measure the network performance and determine when the network is slow and for what is the root cause (saturation, bandwidth outage, misconfiguration, network device defect, etc..).

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Topics: NPM, Network troubleshooting

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