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
4.3.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 ...