Routing is the act of forwarding network packets from a source network to a destination network.
The main reason that routing is desirable in a local network is an increase in scalability, giving a network the ability to handle more users without scarifying performance.
The routing process actually starts at the workstation: the local host initiating the communication. These hosts have their own route table. Route table is a data stored in router.
The purpose of the local route table is to provide the host with information about how to handle the forwarding of packets exiting the workstation.
Routing table provides a lookup entry for each destination by identifying an outgoing link/interface or a path.
One function of a router is packet filtering and classification. This means that beyond address lookup, a router is often required to handle packets differently depending on customer requirements.
What is routing?
