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Routing with a Distance Vector Protocol in an Enterprise Network

Introducing Routing and Switching in the Enterprise – Chapter 5

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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.

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Enterprise hierarchy

Combination of LAN and WAN technologies

DMZ

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Traffic control

Redundant links

QoS

Packet filtering

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Star and extended star topologies

Mesh topologies

Partial meshFull mesh

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Building the routing table

Exit interfaceNext hopAdministrative distance

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Directly connected routes

Static routes

Dynamic routes

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Advantages of static routing

Stub networksSecurityLower overhead

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Static route configuration

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Summary static routes

Floating static routes

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Compare and Contrast a Flat Network and a Hierarchical Routed Topology

Default routes

Gateway of Last Resort

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Routing Using the RIP Protocol

Characteristics of distance vector protocols

Hop count metric

Advantages and disadvantages

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Routing Using the RIP Protocol

Characteristics of RIPv1

Automatically summarizes at classful boundaryBroadcasts routing updates every 30 seconds

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Routing Using the RIP Protocol

Characteristics of RIPv2

ClasslessMulticasts updatesProvides authentication mechanism

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Routing Using the RIP Protocol

RIPv2 configuration

Basic commandsAuthenticationDefault route redistribution

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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:

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Routing Using the RIP Protocol

Verification commands

Troubleshooting commands

Ping for end-to-end connectivity

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Describe and Plan a Network Using EIGRP

Disadvantages of distance vector routing protocols

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Describe and Plan a Network Using EIGRP

Compare EIGRP and RIP

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Describe and Plan a Network Using EIGRP

Characteristics of EIGRP

Composite metricGuaranteed loop-free operationBounded updatesHello packets

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Describe and Plan a Network Using EIGRP

Neighbor table

Topology table

Routing table

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Describe and Plan a Network Using EIGRP

Successors and feasible successors

External routes

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Describe and Plan a Network Using EIGRP

EIGRP neighbors and adjacencies

Hello protocol

EIGRP packet types

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Describe and Plan a Network Using EIGRP

RTP: Reliable Transport Protocol

PDM: Protocol Dependent Module

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Describe and Plan a Network Using EIGRP

EIGRP metrics and convergence

K values

Feasible and reported distance

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Design and Configure a Network Using EIGRP

Basic EIGRP configuration

Wildcard masks

Logging neighbor changes

Bandwidth

Load balancing

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Design and Configure a Network Using EIGRP

EIGRP summarization

Parent and child routes

Null0 interface

Manual summarization

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Design and Configure a Network Using EIGRP

Verification commands

Troubleshooting commands

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Design and Configure a Network Using EIGRP

EIGRP issues and limitations

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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

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