If you have read the HowStuffWorks article How Routers Work, then you know that a router is used to manage network traffic and find the best route for sending packets. But have you ever thought about how routers do this? Routers need to have some information about network status in order to make decisions regarding how and where to send packets. But how do they gather this information?

In this edition of HowStuffWorks, we'll find out precisely what information is used by routers in determining where to send a packet.