Computer network analysis

Speedtest.net, also known as Speedtest by Ookla, is a web service that provides free analysis of Internet access performance metrics, such as connection data rate and latency. It is the flagship product of Ookla, a web testing and network diagnostics company founded in 2006, and based in Seattle, Washington, United States.

flow of data across the Web, the largest portion of Internet traffic

flow of data across the Internet

network software emulator

discrete event network simulator

NetFlow is a feature that was introduced on Cisco routers around 1996 that provides the ability to collect IP network traffic as it enters or exits an interface. By analyzing the data provided by NetFlow, a network administrator can determine things such as the source and destination traffic, class of service, and the causes of congestion. A typical flow monitoring setup (using NetFlow) consists of three main components:

network switch setting to duplicate received packages

computer network protocol

simulating computer networks

field in a routing table, used by a router to make routing decisions

request to a web server for a file

parameter in telecommunications networking

OpenNMS is a free and open-source network monitoring and network management platform written in Java. It provides fault management, performance data collection, service monitoring, event processing, and topology mapping. The project was started in July 1999 and registered on SourceForge as project 4141 in March 2000, making it one of the oldest open-source network management platforms.

OMNeT++ (Objective Modular Network Testbed in C++) is a modular, component-based C++ simulation library and framework, primarily for building network simulators. OMNeT++ can be used for free for non-commercial simulations like at academic institutions and for teaching. OMNEST is an extended version of OMNeT++ for commercial use.

bandwidth guaranteed by an internet service provider

QualNet is a commercial network simulation tool owned by Keysight Technologies (formerly Scalable Network Technologies).

sFlow, short for "sampled flow", is a standard for packet export at Layer 2 of the OSI model. sFlow was originally developed by InMon Corp. It provides a means for exporting truncated packets, together with interface counters for the purpose of network monitoring. Maintenance of the protocol is performed by the sFlow.org consortium, the authoritative source of the sFlow protocol specifications. The current version of sFlow is v5.

simulated flow of data in a communications network

nonnegative-rational-valued invariant of undirected finite graphs; graph-theoretic analogue of the Cheeger constant for compact Riemannian manifolds

Technical description of computer networks