This post explains what is IP routing and the various Routing protocols - Distance vector (RIP, IGRP) and Link state (OSPF, IS-IS).

Routing is performed by network layer devices. It will deliver packets by selecting an optimal path from one network to the other.

Algorithms power the modern world, but many people don't understand them. Here's the definition of an algorithm and how they're affecting our world.

Routing algorithms in VLSI design form the backbone of interconnect synthesis, ensuring that circuit elements are connected efficiently while conforming to strict physical and timing constraints.

So, an algorithm is the process a computer uses to transform input data into output data. A simple concept, and yet every piece of technology that you touch involves many algorithms.