CCNA Data Center DCICN 640-911 Official Cert Guide

Chapter 18. IPv4 Routing Concepts

This chapter covers the following exam topics:

4.1 Describe and Configure basic routing concepts

4.1.a Packet forwarding

4.1.b Router look-up process (exec mode, exec commands, configuration mode)

4.2 Describe the operation of Cisco routers

4.2.a Router boot-up process

4.2.b POST

4.3.c Router components

Routers route IPv4 packets. That simple statement actually carries a lot of hidden meaning. For routers to route packets, routers follow a routing process. That routing process relies on information called IP routes. Each IP route lists a destination—an IP network, IP subnet, or some other group of IP addresses. Each route also lists instructions that tell the router where to forward packets sent to addresses ...