Skip to Main Content
Advanced Internet Protocols, Services, and Applications
book

Advanced Internet Protocols, Services, and Applications

by Eiji Oki, Roberto Rojas-Cessa, Mallikarjun Tatipamula, Christian Vogt
April 2012
Intermediate to advanced content levelIntermediate to advanced
260 pages
7h 42m
English
Wiley
Content preview from Advanced Internet Protocols, Services, and Applications

4

IP ROUTING PROTOCOLS

Internet Protocol (IP) routing protocols are used to dynamically determine the best routes to send data from a source to a destination via routers or networks, while taking the network situation into account. A routing protocol shares the information with neighbor routers and throughout the network. IP routing protocols enable routers to dynamically build up and update their routing tables. The routing table contains destination information along with the corresponding output ports (i.e., the next hops) to which packets should be sent. Thus, packets are transmitted in a hop-by-hop manner, guided by the routing tables of each router on the route from the source to the destination.

The concept of the routing table is similar to a guide post on the road. In Figure 4.1a, a car driver wants to go to the airport. At the junction, the driver turns to the left based on the road sign. In Figure 4.1b, a packet arrives at the router. Its destination is 123.145.164.188. The router forwards the packet to output port 2 based on the information in the routing table.

This chapter describes IP routing protocols. Section 4.1 describes an overview of routing protocols including Interior Gateway Protocol (IGP) and Exterior Gateway Protocol (EGP), as shown in Figure 4.2. Section 4.2 describes the Routing Information Protocol (RIP) as an IGP. Section 4.3 describes the Open Shortest Path First (OSPF) protocol as another example an an IGP. Section 4.4 describes the Border Gateway ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Practical Internet of Things Security - Second Edition

Practical Internet of Things Security - Second Edition

Brian Russell, Drew Van Duren
Network Routing, 2nd Edition

Network Routing, 2nd Edition

Deep Medhi, Karthik Ramasamy

Publisher Resources

ISBN: 9780470499030Purchase book