© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 Routing with a Distance Vector Protocol in an Enterprise Network Introducing Routing and Switching in the Enterprise – Chapter 5

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 2 Objectives  Compare and contrast a flat network and a hierarchical routed topology.  Configure a network using RIP.  Describe and plan a network using EIGRP.  Design and configure a network using EIGRP.

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 3 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Enterprise hierarchy  Combination of LAN and WAN technologies  DMZ

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 4 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Traffic control  Redundant links  QoS  Packet filtering

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 5 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Star and extended star topologies  Mesh topologies Partial mesh Full mesh

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 6 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Building the routing table Exit interface Next hop Administrative distance

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 7 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Directly connected routes  Static routes  Dynamic routes

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 8 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Advantages of static routing Stub networks Security Lower overhead

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 9 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Static route configuration

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 10 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Summary static routes  Floating static routes

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 11 Compare and Contrast a Flat Network and a Hierarchical Routed Topology  Default routes  Gateway of Last Resort

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 12 Routing Using the RIP Protocol  Characteristics of distance vector protocols  Hop count metric  Advantages and disadvantages

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 13 Routing Using the RIP Protocol  Characteristics of RIPv1 Automatically summarizes at classful boundary Broadcasts routing updates every 30 seconds

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 14 Routing Using the RIP Protocol  Characteristics of RIPv2 Classless Multicasts updates Provides authentication mechanism

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 15 Routing Using the RIP Protocol  RIPv2 configuration Basic commands Authentication Default route redistribution

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 16 Routing Using the RIP Protocol Problem Discontiguous subnets Unnecessary traffic Routing loops Solution No auto-summary Passive-interface Poisoned reverse, split horizon, holddown timer, triggered updates Problems with RIP and their solutions:

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 17 Routing Using the RIP Protocol  Verification commands  Troubleshooting commands  Ping for end-to-end connectivity

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 18 Describe and Plan a Network Using EIGRP  Disadvantages of distance vector routing protocols

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 19 Describe and Plan a Network Using EIGRP  Compare EIGRP and RIP

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 20 Describe and Plan a Network Using EIGRP  Characteristics of EIGRP Composite metric Guaranteed loop-free operation Bounded updates Hello packets

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 21 Describe and Plan a Network Using EIGRP  Neighbor table  Topology table  Routing table

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 22 Describe and Plan a Network Using EIGRP  Successors and feasible successors  External routes

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 23 Describe and Plan a Network Using EIGRP  EIGRP neighbors and adjacencies  Hello protocol  EIGRP packet types

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 24 Describe and Plan a Network Using EIGRP  RTP: Reliable Transport Protocol  PDM: Protocol Dependent Module

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 25 Describe and Plan a Network Using EIGRP  EIGRP metrics and convergence  K values  Feasible and reported distance

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 26 Design and Configure a Network Using EIGRP  Basic EIGRP configuration  Wildcard masks  Logging neighbor changes  Bandwidth  Load balancing

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 27 Design and Configure a Network Using EIGRP  EIGRP summarization  Parent and child routes  Null0 interface  Manual summarization

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 28 Design and Configure a Network Using EIGRP  Verification commands  Troubleshooting commands

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 29 Design and Configure a Network Using EIGRP  EIGRP issues and limitations

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 30 Summary  Enterprise networks are hierarchical  Networks use static and dynamic routing to move information  Dynamic routing protocols are classified as either distance vector or link state  RIP is a distance vector routing protocol  EIGRP is a Cisco proprietary distance vector routing protocol with many advanced features  EIGRP works best if its default features are modified to suit the routing situation

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 31