© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 1 1 Routing Working at a Small-to-Medium Business or ISP – Chapter 6

ITE PC v4.0 Chapter 1 2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Objectives  Describe the purpose and function of dynamic routing and the protocols used to implement it.  Configure RIPv2 dynamic routing using the Cisco IOS.  Describe the use of exterior routing protocols across the Internet.  Enable BGP on a customer site router.

ITE PC v4.0 Chapter 1 3 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Dynamic Routing and Protocols  Describe the purpose and function of routing and the required protocols used.

ITE PC v4.0 Chapter 1 4 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public How Routers use Routes  Describe the purpose of destination, mask, gateway, and metric in a routing table route.

ITE PC v4.0 Chapter 1 5 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Static and Default Routes  Describe the syntax and function of manually- configured routes.

ITE PC v4.0 Chapter 1 6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Dynamic Routing and Protocols  Compare and contrast the distance vector and link state protocols and identify common types of each.

ITE PC v4.0 Chapter 1 7 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Dynamic Routing and Protocols  Describe and compare the RIP, EIGRP and OSPF routing protocols

ITE PC v4.0 Chapter 1 8 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Dynamic Routing and Protocols  Describe the routing protocols that are most commonly deployed in an organization’s network for routing internally.

ITE PC v4.0 Chapter 1 9 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Dynamic Routing and Protocols  Describe and implement RIP routing on an integrated router.

ITE PC v4.0 Chapter 1 10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Exterior Routing Protocols Across the Internet  Describe an Autonomous System

ITE PC v4.0 Chapter 1 11 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Exterior Routing Protocols Across the Internet  Describe the difference between interior and exterior routing protocols

ITE PC v4.0 Chapter 1 12 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Exterior Routing Protocols Across the Internet  Describe how packets are routed across the Internet

ITE PC v4.0 Chapter 1 13 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Exterior Routing Protocols Across the Internet  Describe how ISPs use exterior routing protocols to forward traffic

ITE PC v4.0 Chapter 1 14 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Exterior Routing Protocols Across the Internet  Implement BGP using a predefined configuration and verify its operation

ITE PC v4.0 Chapter 1 15 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Summary  All routers make routing decisions by looking up information stored in their routing tables.  Routes can be statically assigned by an administrator, or dynamically learned by the router via a routing protocol.  Routing protocols use either distance-vector or link-state algorithms to calculate the best routes to each destination.  Criteria such as ease of management, ease of configuration, and efficiency must be considered when selecting a routing protocol for use within an organization.  Organizations are also called Autonomous Systems.  Between Autonomous Systems, Exterior Gateway routing protocols control the flow of traffic.  ISPs handle Internet traffic through the use of routing policies.

ITE PC v4.0 Chapter 1 16 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public