Category Archives: Glossary

Frame Relay is a connection-oriented data-link technology that defines single-link virtual circuit multiplexing by assigning connection identifiers.

Router Access Lists manage IP traffic as network access grows and filter packets as they pass through the router.

Bridges and switches operate principally at Layer 2 of the OSI reference model. As such, they are widely referred to as data-link layer devices. Bridges became commercially available in the early 1980s. At the time of their introduction, bridges connected and enabled packet forwarding between homogeneous networks. More recently, bridging between different networks also has been defined and… Read More »

The Open Systems Interconnection (OSI) model began as a reference model, but has since been implemented. It was created by the International Organization for Standardization (ISO) to provide a logical framework for how data communication processes should interact across networks. Standards were created for the computer industry allowing different networks to work together efficiently.

Routing is the process by which an item gets from one location to another. Many items get routed: for example, mail, telephone calls, and trains. In networking, a router is the device used to route traffic. The routing information a router learns from its routing sources is placed in its routing table. The router will rely on this… Read More »

A router is a device that connects two or more packet-switched networks or subnetworks. It serves two primary functions, described below.