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Ethernet hub. An Ethernet hub, active hub, network hub, repeater hub, multiport repeater, or simply hub[ a] is a network hardware device for connecting multiple Ethernet devices together and making them act as a single network segment. It has multiple input/output (I/O) ports, in which a signal introduced at the input of any port appears at the ...
A network switch (also called switching hub, bridging hub, Ethernet switch, and, by the IEEE, MAC bridge [1]) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data ...
Cisco Systems, Inc. (using the trademark Cisco) is an American multinational digital communications technology conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware , software , telecommunications equipment and other high-technology services and products. [ 3 ]
Products in this category are Cisco's range of routers, switches, wireless systems, security systems, WAN acceleration hardware, energy and building management systems and media aware network equipment. [ 1 ][ 2 ] Collaboration. IP video and phones, TelePresence, HealthPresence, unified communications, call center systems, enterprise social ...
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Hub (network science) In network science, a hub is a node with a number of links that greatly exceeds the average. Emergence of hubs is a consequence of a scale-free property of networks. [1] : 27 While hubs cannot be observed in a random network, they are expected to emerge in scale-free networks. The uprise of hubs in scale-free networks is ...
Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks. The software allows users to simulate the configuration of Cisco routers and switches using a simulated command line interface. Packet Tracer makes use of a drag and drop user ...
Hierarchical internetworking model. The Hierarchical internetworking model is a three-layer model for network design first proposed by Cisco in 1998. [ 1] The hierarchical design model divides enterprise networks into three layers: core, distribution, and access.