Filter
Top Products
IP Overview
IP Routing Protocols
IPC-2
Cisco IOS IP Configuration Guide
Server load balancing allows a network administrator to define a virtual server to represent a group of
real servers. For more information on this feature, see the “Configuring Server Load Balancing” chapter.
Mobile IP, which allows users to roam and maintain connectivity beyond their home subnet while
consistently maintaining their IP address, is described in the “Configuring Mobile IP” chapter.
IP Routing Protocols
The Cisco implementation of each IP routing protocol is discussed at the beginning of the individual
protocol chapters in this publication.
With any of the IP routing protocols, you must create the routing process, associate networks with the
routing process, and customize the routing protocol for your particular network. You will need to
perform some combination of the tasks in the respective chapters to configure one or more IP routing
protocols.
Determining a Routing Process
Choosing a routing protocol is a complex task. When choosing a routing protocol, consider at least the
following factors:
• Internetwork size and complexity
• Support for variable-length subnet masks (VLSMs). Enhanced Interior Gateway Routing Protocol
(Enhanced IGRP), Intermediate System-to-Intermediate System (IS-IS), static routes, and Open
Shortest Path First (OSPF) support VLSMs.
• Internetwork traffic levels
• Security needs
• Reliability needs
• Internetwork delay characteristics
• Organizational policies
• Organizational acceptance of change
The chapters in this publication describe the configuration tasks associated with each supported routing
protocol or service. This publication does not provide in-depth information on how to choose routing
protocols; you must choose routing protocols that best suit your needs.
Interior and Exterior Gateway Protocols
IP routing protocols are divided into two classes: Interior Gateway Protocols (IGPs) and Exterior
Gateway Protocols (EGPs). The IGPs and EGPs that Cisco supports are listed in the following sections:
• Interior Gateway Protocols
• Exterior Gateway Protocols