Chapter 6. Routing Traffic

After completion of this chapter, you will be able to answer the following questions:

• How are source and destination IP addresses used to route traffic through a network?

• What are sources for routing information used to populate a router’s routing table?

• How do routed protocols differ from routing protocols?

• When multiple routing protocols know how to reach a destination network, which route is chosen?

• When a single routing protocol knows of multiple routes to reach a destination network, how is the preferred path (or paths) chosen?

• What is the distinction between IGP and EGP?

• What are the primary differences between distance-vector and link-state routing protocols?

• What are the characteristics of the following routing protocols: RIP, OSPF, IS-IS, EIGRP, and BGP?

• How does NAT perform IP address translation, and how do the PAT, SNAT, and DNAT approaches to NAT differ?

• What protocols are used to route multicast traffic?