The conceptual OSI protocol stack models how network data moves from one computer through another, by way of succeeding layers of computer software. The OSI model sets up a system of layers, with ...

With computer networks, all of the intelligence is at the intersections — the Layer 3 devices. All the packet (or car in this analogy) really knows is where it’s coming from and where it wants ...

Typically, at Layer 2, LAP-D (Link Access Procedure -- D Channel) is the Q.921 signalling used, and DSS1 (Digital Subscriber Signalling System No. 1) is the Q.931 signalling that is used at Layer 3.

Computer scientists have created software that they hope will lead to data centers that logically function as single, plug-and-play networks that will scale to the massive scale of modern data ...