PART 1 OVERVIEW OF SCALABLE INTERNETWORKS

Chapter 1 Overview of Scalable Internetworks

Scaling Large Internetworks

Defining the Router s Role in a Hierarchy

Key Characteristics of Scalable Internetworks

Making the Network Reliable and Available

Making the Network Responsive

Making the Network Efficient

Making the Network Adaptable

Making the Network Accessible but Secure

Summary

PART 2 INTRODUCTION TO MANAGING TRAFFIC AND ACCESS

Chapter 2 Introduction to Managing Traffic and Congestion

Congestion Overview

Traffic in an IP Network

Traffic in an IPX Network

Other Traffic in a Multiprotocol Network

Managing Traffic Congestion

Adjusting Timers on Periodic Announcements

Providing Static Entries in Tables

Filtering Broadcast Traffic

Filtering User and Application Traffic

Prioritizing Traffic

Summary

Chapter 3 Managing IP Traffic

Traffic Management Techniques

IP Access Lists

Helper Addressing

Configuring IP Standard Access Lists

Inbound Access List Processing

Outbound Access List Processing

IP Addressing Review

Access Lists Use Wildcard Mask

Access List Configuration Tasks

Standard Access List Commands

Implicit Masks

Configuring Principles for Access Lists

Standard Access List Example

Location of Standard Access Lists

Restricting Virtual Terminal Access

How to Control vty Access

Virtual Terminal Line Commands

Virtual Terminal Access Example

Configuring Extended Access Lists

Extended Access List Processing

Extended IP Access List Command

Extended Access List Examples

Configuring Named Access Lists

Implementation Considerations

Named Access List Example

Location of Extended Access Lists

Verifying Access List Configurations

Using an Alternative to Access Lists

Configuring Null Interface

Null Interface Command

Using Helper Addresses

Server Location

IP Helper Address Commands

Helper Address Examples

Summary

Chapter 4 Managing Novell IPX/SPX Traffic

Novell IPX/SPX Overview

IPX Addressing

Managing IPX/SPX Traffic

IPX Traffic Filtering

IPX Traffic Filtering Overview

IPX Access List Commands

IPX SAP Overview

SAP Operation

SAP Filters

SAP Filter Configuration

SAP Filtering Examples

Filtering RIP Traffic

SAP/GNS Operation

Connecting IPX Networks Using IP Tunnels

Configuring and IP Tunnel Interface

IP Tunnel Configuration Example

Verifying IPX Traffic Operation

Summary

Chapter 5 Configuring Queuing to Manage Traffic

Queuing Overview

Traffic Prioritization

Establishing a Queuing Policy

Choosing a Cisco IOS Queuing Option

Primary Differences Between the Queuing Options

Weighted Fair Queuing Overview

Weighted Fair Queuing Operation

Weighted Fair Queue Example

Priority Queuing Overview

Priority Queuing Operation

Priority Queuing Configuration Tasks

Priority List Configuration Commands

Priority Queuing Example

Custom Queuing Overview

Custom Queuing Operation

Custom Queuing Configuration Tasks

Custom Queue Configuration Commands

Custom Queuing Examples

Verifying Queuing Operation

Summary

What Is Routing?

Chapter 6 Routing Protocol Overview

PART 3 CONFIGURING SCALABLE ROUTING PROTOCOLS

Comparing Routing Protocols

Using Convergence

Discovering Routes

Selecting a Route

Maintaining Routing Information

Summary

Chapter 7 Extending IP Addresses Using VLSMs (Variable-Length Subnet Masks)

IP Address Issues and Solutions

Using Addressing Hierarchies

Slowing IP Address Depletion

Variable-Length Subnet Masks

Variable-Length Subnet Mask Overview

Classless and Classful Updates

Calculating VLSMs

VLSM Example

Route Summarization Overview

What Is Route Summarization?

Summarizing Within an Octer

Summarizing Addresses in a VLSM-Designed Network

Route Summarization Implementation Considerations

Using Private Addressing

Other Addressing Considerations

Translating Inside Local Addresses

Summary

Chapter 8 Configuring OSPF in a Single Area

OSPF Overview

Steps to OSPF Operation

Step 1:Establishing Router Adjacencies

Step 2: Electing the DR and BDR

Step 3:Discovering Routes

Step 4:Choosing Routes

Step 5:Maintaining Routing Information

Configuring OSPF on Routers Within a Single Area

Basic Configuration Steps

Optional Configuration Commands

Verifying OSPF Operation

Summary

Chapter 9 Interconnecting Multiple OSPF Areas

Creating Multiple OSPF Areas

OSPF Hierarchical Routing

OSPF Multi-Area Components

Configuring OSPF Operation Across Multiple Areas

Forwarding Packets in a Multi-Area Network

Flooding LSUs to Multiple Areas

Updating the Routing Table

Using and Configuring OSPF Multi-Area Components

Configuring OSPF ABRs

Using Route Summarization

Configuring Route Summarization

Using Stub and Totally Stubby Areas

Meeting the Backbone Area Requirements

Creating a Virtual Link

Configuring Virtual Links

OSPF Virtual Link Configuration Example

Verifying OSPF Operation

Summary

Enhanced IGRP Overview

Chapter 10 Configuring Enhanced IGRP

EIGRP Support for Novell IPX RIP and SAP

EIGRP Support for AppleTalk

EIGRP Terminology

Enhanced IGRP Operation

Building the Neighbor Table

Discovering Routes

Choosing Routes

Maintaining Routes

Configuring EIGRP for IP

Configuring EIGRP

Configuring EIGRP Support for IPX

Summarizing EIGRP Routes for IP

Verifying Enhanced IGRP Operation

Summary

Chapter 11 Optimizing Routing Update Operation

Controlling Routing Update Traffic

Using and Configuring the passive-interface Command

Using and Configuring Default Routes

Using and Configuring Static Routes

Using and Configuring Route Filters

IPX Route Filtering Configuration Example

Using Multiple Routing Protocols

What Is Redistribution?

Redistribution Implementation Considerations

Selecting the Best Path

What Protocol to Believe?

Redistribution Guidelines

Redistribution and EIGRP

Using and Configuring Redistribution

Modifying Administrative Distance (Optional)

IP Route Filtering Configuration Example

IP Static Route Filtering Configuration Example

Redistribution Example Using ip default-network

Redistribution Example Using distance

Verifying Redistribution Operation

Summary

Chapter 12 Connecting Enterprises to an Internet Service Provider

BGP and ISP Connectivity Basics

When Not to Use BGP

Policy Drives BGP Requirements

BGP Sessions

Static Route Command Review

Connecting to an ISP Using BGP and Alternatives

BGP Operation

RIP Static Route Example

OSPF Example

BGP Configuration Commands

BGP Configuration Example

Verifying BGP Operation With the Show Commands

Summary

Integrated Services Digital Network (ISDN) BRI

PART 4 CONFIGURING DIALUP CONNECTIVITY

Chapter 13 WAN Connectivity Overview

WAN Connectivity Options

Dedicated Connectivity

Asynchronous Dial-In Connectivity

Dial-on-Demand Routing

Packet-Switched Services

WAN Encapsulation Protocols

Connection Considerations

Summary

Chapter 14 Configuring Dial-on-Demand Routing

ISDN Standards

ISDN Access Options

ISDN Encapsulation Options

ISDN Functions

Selecting a Cisco Router: Considerations

ISDN Switch Types

Configuring ISDN BRI

Dial-on-Demand Routing

Generic DDR Operation

Selecting a DDR Implementation

Legacy DDR

Configuring Legacy DDR

Task 1: Specifying Interesting Traffic (What Enables the Connection?)

Task 2: Defining Static Routes (Route to Destination)

Task 3: Configuring the Dialer Information

Legacy DDR Configuration Tasks Summarized

Legacy DDR Optional Commands

Legacy DDR Using ACLs Configuration Example

Verifying and Troubleshooting Legacy DDR Operation

Dialer Profiles Overview

Configuring Dialer Profiles

Dialer Profiles Configuration Tasks Summarized

Dialer Profiles Configuration Example

Verifying Dialer Profiles Operation

DDR Using Rotary Group Overview

Configuring Dialer Rotary Groups

Dialer Rotary Group Configuration Example

PPP Authentication Overview

Selecting a PPP Authentication Protocol

Configuring PPP Authentication

Optional PPP Authentication Commands

Summary

Chapter 15 Customizing DDR Operation

Dial Backup for Dedicated Connections

Configuring Dial Backup for Primary Links

Configuring Dial Backup for Excessive Traffic Load

MultiLink PPP Operation

MultiLink PPP Overview

Configuring MultiLink PPP

MultiLink PPP Configuration Example

Verifying MultiLink PPP Operation

Disabling Overhead Traffic

Snapshot Routing

IPX Spoofing

Summary

PART 5 INTEGRATING NONROUTED SERVICES

Chapter 16 Bridging Overview

Introduction to Bridging

Nonrouted Protocol Support

Routing Versus Bridging

Basic Router/Bridge Operation

Cisco-Supported Bridging Types

Transparent Bridging

Encapsulated Bridging

Integrated Routing and Bridging

Source-Route Bridging

Source-Route Transparent Bridging

Source-Route Translational Bridging

Summary

Transparent Bridging Operation

Transparent Bridging

Chapter 17 Configuring Transparent Bridging and Integrated Routing and Bridging

Transparent Bridging Configuration Tasks

Verifying Transparent Bridging

Verifying Spanning Tree Operation

Integrated Routing and Bridging

IRB Operation

BVI Addressing

Making Bridging or Routing Decisions

IRB Configuration Tasks

Configuration Example: IRB and the BVI

Enabling Routing on a Bridge Group

IRB Configuration Considerations

Verifying IRB Operation

Summary

Chapter 18 Configuring Source-Route Bridging

Source-Router Bridging (SRB) Overview

Source-Route Bridging Operation

Routing Information Indicator

Source-Router Bridging Configuration

SRB Manual Spanning-Tree Configuration Example

SRB Automatic Spanning-Tree Configuration Example

Multiport Configuration

Proxy Explorer Configuration

Multiring Configuration

Multiring Configuration Example

Source-Route Transparent Bridging (SRT) Overview

SRT Operation

SRT Configuration Example

Source-Route Translational Bridging (SR/TLB) Overview

SR/TLB Configuration Example

Verifying Source-Route Bridging Operation

SR/TLB Configuration

Summary

Appendix A Chapter Test Answer Key

Appendixes

Appendix B Managing AppleTalk Traffic

AppleTalk Traffic Overview

AppleTalk Protocol Stack

AppleTalk Services

Nonextended/Extended Networks

Extended AppleTalk Internetwork

AppleTalk Zones

AppleTalk Filtering Options

GetZoneList Filtering

ZIP Reply Filtering

RTMP Filtering

NBP Filtering

Summary

Appendix C Configuring NetWare Link Services Protocol

Configuring NLSP

NLSP Operation

NLSP Configuration Commands

NLSP Configuration Example

Verifying NLSP Operation

Summary

Configuring T1 and E1

Appendix D Configuring T1/E1 and ISDN PRI Options

Channelized T1/E1 Configuration Commands

Channelized T1 Configuration Example

Channelized E1 Configuration

Channelized E1 Configuration Example

Configuring Primary Rate Interface

ISDN PRI Configuration Commands

T1/E1 Controller Options for PRI

ISDN PRI Configuration

PRI Configuration Example

Summary

Overview of Switched Multimegabit Data Service (SMDS)

Appendix E Configuring SMDS

SMDS Configuration Tasks

SMDS Configuration Commands

SMDS Configuration Example

Summary

Appendix F Password Recovery

Theory of Password Recovery

Password Recovery Technique #1

Password Recovery Technique #2

Summary

Appendix G Glossary

Index