Description

Routing is the process that forwards data packets between networks or subnetworks, using a Layer 3 device. The routing process uses network routing tables, protocols, and algorithms to determine the most efficient path for forwarding the IP packet. Subnetworks, also known as subnets, are very common in all but the smallest of network environments. Subnetworks segment the network into smaller divisions that have their own addresses. Each host is represented by a unique IP address. In some cases, some of the bits that are used for the host portion of an IP address are borrowed to create the subnet address. The subnet mask defines which part of the IP address represents the network part. This course describes how subnets function and how they are computed. Before you can understand subnetting, you need to understand binary numbers, so you will learn about routing between subnets, work with decimal and binary numbers interchangeably, and calculate subnet addresses. This course is one of a series in the Algeo learning path that covers the objectives for the Cisco exam 640-911: Introducing Cisco Data Center Networking.