Network Performance Managment

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Cloud Performance – Why Long Distance Relationships Don’t Work

As companies turn to SaaSas a low cost, highly scalable, and agile way to host new applications, a number of cloud performance management and monitoring solutions are appearing. Salesforce led the CRMs in moving off of dedicated hardware, and other types of applications like email, project planning, and even EHR have followed suit. Moving away […]

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Top 5 Salesforce Performance Problems

Salesforce has an online status dashboard, trust.salesforce.com, which many users leverage to monitor the application and determine whether it’s working properly and performing to expectations. However, trust.salesforce.com is really just an internal dashboard Salesforce set up for checking on whether everything within the Salesforce infrastructure and data center is functioning properly. It doesn’t really show […]

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How to Easily Capture TCP Conversation Streams

When verifying that FlowView is identifying flows with the correct application, we use tcpreplay to send traffic from packet capture files into an appliance capture interface. The packet captures can be homemade by us or from our customers. These packet captures are typically recorded without filtering, so naturally they will contain extraneous protocols and many […]

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The REAL Reason Airplane Wifi is Slow

Depending on your travel agenda, a cross-country flight can be an opportunity to work offline without the usual real-time distractions or catch up on the latest episode of Silicon Valley. With in-flight wireless like Gogo becoming widely available, you may be tempted to keep in touch with colleagues from 35,000 feet, or post to facebook […]

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The Hidden Cost of Multiple Tools

As application deployments get more complex, the tools to make sure they’re working have certainly more than kept up. Not only do we have tools to monitor hardware health, but there are tools to measure network performance, application performance, and resource usage for every conceivable piece of every system. Unfortunately, collecting data for data’s sake […]

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An Introduction to Jitter for Unified Communications

Jitter is a term used to describe variation in the arrival times of packets over a network. In packet switched networks, it is sometimes referred to as packet delay variation. Generally caused by congestion in the IP network, jitter can be a serious issue for interactive real-time traffic, e.g. VoIP. This article discusses how jitter […]

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How to Troubleshoot Video Conferencing Drops

A video conferencing partner of ours asked for help with a high profile technology customer recently. The vendor’s gear was being blamed for frequent video conferencing session drops. This was causing friction between vendor and the customer’s network team, and pressure on the IT manager was mounting to fix the issue at all costs. The […]

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Roll Your Own: Custom Application Definition for FlowView

Knowing which websites and applications are in use on your network is hard. The number of Saas services, Cloud-based services and smart device apps that are in use is growing at an astronomical rate. But if these apps are impacting the performance of the applications which run your business, you need to get a handle […]

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Build Your Own 10GigE Wire-Rate NetFlow Traffic Generator Using Tcpreplay 4.0

Want to build a packet generator using free software and commodity hardware? Wouldn’t it be nice if that packet generator was just as fast as expensive hardware-based packet generators? What if it was more powerful, flexible and easier to use than commercial alternatives?

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Monitoring the Performance to SaaS & Cloud Services

What is a Path? A Path is the network connection from a source to a target, specifically measuring the maximum end to end performance achievable. For example a Path from our office here in Boston to the Salesforce.com instance we use (NA2) located outside of Chicago consists of 12 layer 3 network hops.

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