Calculating Tcp Connect Time and http Response Time with wget The Problem A client of mine complained about intermittent performance issues with a web based application; upon learning that there...
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Iperf is a versatile bandwidth measurement tool that is widely used by network engineers to assess how much TCP or UDP traffic an IP network can transport. This tool was first developed at the University of Illinois by the Distributed Applications Support Team to “test the limits of your network”….
25 Network Engineers are Impaired by Lack of Network Monitoring In recent months, I have had several conversations with many network engineers to get their perspective on enterprise networks, network monitoring, and troubleshooting. These interactions were very beneficial for learning how much time they spend troubleshooting, which tools and procedures…
Is the application down or not available? Is the root cause of the problem the network or the backend systems? I am sure that everybody understands the difference between uptime and availability, however I still see these terms used incorrectly as synonyms. Think about when you are troubleshooting a remote…
The Raspberry Pi (RPi) has been a smash hit in so many different areas. Hobbyists love them and professionals have found a reliable, low-cost, and small-footprint platform to build commercial products. For these reasons, the Raspberry Pi is our preferred platform for implementing end-user distributed network monitoring here at NetBeez….
Every network interface is set with an MTU (Maximum Transmission Unit) value that defines the byte size of the largest protocol data unit that is allowed to pass. So what happens when a frame or packet is larger in size than the MTU value of the interface? It depends on whether…
Can we measure network complexity? Wikipedia states that network complexity is “the number of nodes and alternative paths that exist within a computer network, as well as the variety of communication media, communications equipment, protocols, and hardware and software platforms found in the network. ” Wikipedia also defines a complex…
Enterprise networks are distributed systems by nature which are supposed to operate autonomously after correct deployment and configuration. I want to emphasize the “after correct configuration and deployment” part because if this happens the network engineer’s responsibility is fulfilled and he can go to bed, worry free, after a 3:00…