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How to diagnose TCP Connection set up issues


TCP Series #1: What can go wrong in a TCP Handshake?

Here is a first article of a series covering all you need to know to troubleshoot performance issues impacting applications relying on the TCP Protocol. 

Let's have a look at how TCP sessions are established... and what can go wrong! 

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Topics: TCP

How to get Network Visibility for Free



Performance Vision offers end-to-end application performance analytics from the wire-data. Because we know network engineers sometime get a hard time convincing their management to invest into network visibility / NMS / Network monitoring tools, we decided to provide a version of our Wire Data analytics solution for free! 

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Topics: NPM

Give your team intelligence to solve degradations in real time: it comes out cheaper!


Performance degradations have a significant impact on the productivity of your internal clients using the business applications.

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Topics: performance diagnostic, real time, performance analysis

Are you getting the right traffic from your span?


 

There are very good reasons to go for SPAN / port mirroring to get the traffic you need to troubleshoot network and application performance.

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Topics: traffic capture, port mirroring, SPAN, data

How-To capture virtual traffic



Virtualization is widely spread and raises some new challenges for network analysis and network based APM. To analyze and troubleshoot performance degradations in application chains, which are partially or totally virtualized, you need to capture virtual traffic (i.e. traffic between virtual machines that does not go through the physical network).

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Topics: Cloud, virtual, virtual traffic, VMware, virtual data center, network analysis

SMB troubleshooting basics: anatomy of a CIFS transaction


We have noticed an increasing demand for SMB / CIFS troubleshooting. SMB/CIFS is widely used to access and store files for both user activities, and as part of application chains. It has become critical in numerous environments.

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Topics: troubleshooting, smb, cifs, packet analysis, smb transaction, cifs transaction

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