9781587201370

Network Management Fundamentals

by
  • ISBN13:

    9781587201370

  • ISBN10:

    1587201372

  • Edition: 1st
  • Format: Paperback
  • Copyright: 11/21/2006
  • Publisher: Cisco Press

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Supplemental Materials

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Summary

Network Management Fundamentals offers an accessible overview of network management and its essential concepts. After reading this book, users will grasp the business implications of network management, understand various management reference models, know the building blocks of network management, realize the impact of management technologies, and be able to make educated decisions concerning network management. Part I gives an overview of network management, including why it is relevant and a discussion of its associated functions, tools, and activities. Part II dissects the topic into its components, covering perspectives and aspects of network management that culminate in a discussion of management reference models. Part III addresses the various network management building blocks. Discussion includes communication between systems, information that describes the systems to be managed, common management functionality, and roles that different components play in a managed network. Also, an overview of the most important management protocols is presented. Part IV includes a number of topics of general interest, such as service level agreements and management integration, and puts into perspective the concepts and theories introduced in earlier parts.

Author Biography

Dr. Alexander Clemm, Ph.D. is a Senior Architect with Cisco Systems. He has been involved with integrated management of networked systems and services since 1990. Alex has provided technical leadership for many network management development and engineering efforts from original conception to delivery to the customer. They include management instrumentation of network devices, turnkey management solutions for packet telephony and managed services, and management systems for Voice over IP networks, broadband access networks, and provisioning of residential subscriber services. Alex has approximately 30 publications related to network management and 15 patents pending. He is on the Organizing Committee or Technical Program Committee of the major technical conferences in the field, including IM, NOMS, DSOM, IPOM, and MMNS, and he served as Technical Program Co-chair of the 2005 IFIP/IEEE International Symposium on Integrated Network Management. He holds a Ph.D. degree from the University of Munich and a Master’s degree from Stanford University.

 

Table of Contents

Introduction xix
Part I Network Management: An Overview
3(98)
Setting the Stage
5(42)
Defining Network Management
5(5)
Analogy 1: Health Care---the Network, Your Number One Patient
6(1)
Analogy 2: Throwing a Party
7(1)
A More Formal Definition
8(2)
The Importance of Network Management: Many Reasons to Care
10(6)
Cost
12(2)
Quality
14(1)
Revenue
15(1)
The Players: Different Parties with an Interest in Network Management
16(5)
Network Management Users
16(1)
The Service Provider
16(1)
The Enterprise IT Department
17(1)
The End User
18(1)
Network Management Providers
19(1)
The Equipment Vendor
19(1)
The Third-Party Application Vendor
20(1)
The Systems Integrator
20(1)
Network Management Complexities: From Afterthought to Key Topic
21(23)
Technical Challenges
22(1)
Application Characteristics
23(3)
Scale
26(4)
Cross-Section of Technologies
30(4)
Integration
34(2)
Organization and Operations Challenges
36(1)
Functional Division of Tasks
37(1)
Geographical Distribution
38(1)
Operational Procedures and Contingency Planning
38(1)
Business Challenges
39(1)
Placing a Value on Network Management
40(1)
Feature vs. Product
41(1)
Uneven Competitive Landscape
42(2)
Chapter Summary
44(1)
Chapter Review
45(2)
On the Job with a Network Manager
47(28)
A Day in the Life of a Network Manager
48(15)
Pat: A Network Operator for a Global Service Provider
48(6)
Chris: Network Administrator for a Medium-Size Business
54(6)
Sandy: Administrator and Planner in an Internet Data Center
60(2)
Observations
62(1)
The Network Operator's Arsenal: Management Tools
63(9)
Device Managers and Craft Terminals
64(1)
Network Analyzers
65(1)
Element Managers
65(1)
Management Platforms
66(1)
Collectors and Probes
67(1)
Intrusion Detection Systems
67(1)
Performance Analysis Systems
68(1)
Alarm Management Systems
68(1)
Trouble Ticket Systems
69(1)
Work Order Systems
69(1)
Workflow Management Systems and Workflow Engines
70(1)
Inventory Systems
70(1)
Service Provisioning Systems
71(1)
Service Order--Management Systems
71(1)
Billing Systems
72(1)
Chapter Summary
72(1)
Chapter Review
73(2)
The Basic Ingredients of Network Management
75(26)
The Network Device
76(7)
Management Agent
77(3)
Management Information, MOs, MIBs, and Real Resources
80(3)
Basic Management Ingredients---Revisited
83(1)
The Management System
83(3)
Management System and Manager Role
84(2)
A Management System's Reason for Being
86(1)
The Management Network
86(7)
Networking for Management
87(3)
The Pros and Cons of a Dedicated Management Network
90(3)
The Management Support Organization: NOC, NOC, Who's There?
93(4)
Managing the Management
93(3)
Inside the Network Operations Center
96(1)
Chapter Summary
97(1)
Chapter Review
98(3)
Part II Management Perspectives
101(68)
The Dimensions of Management
103(26)
Lost in (Management) Space: Charting Your Course Along Network Management Dimensions
104(1)
Management Interoperability: ``Roger That''
104(10)
Communication Viewpoint: Can You Hear Me Now?
106(2)
Function Viewpoint: What Can I Do for You Today?
108(2)
Information Viewpoint: What Are You Talking About?
110(1)
The Role of Standards
111(3)
Management Subject: What We're Managing
114(1)
Management Life Cycle: Managing Networks from Cradle to Grave
115(3)
Planning
116(1)
Deployment
117(1)
Operations
117(1)
Decommissioning
118(1)
Management Layer: It's a Device... No, It's a Service... No, It's a Business
118(4)
Element Managment
119(1)
Network Management
119(1)
Service Management
120(1)
Business Management
121(1)
Network Element
121(1)
Additional Considerations
121(1)
Management Function: What's in Your Toolbox
122(1)
Management Process and Organization: Of Help Desks and Cookie Cutters
123(3)
Chapter Summary
126(1)
Chapter Review
127(2)
Management Functions and Reference Models: Getting Organized
129(40)
Of Pyramids and Layered Cakes
129(2)
FCAPS: The ABCs of Management
131(12)
F Is for Fault
132(1)
Network Monitoring Overview
132(1)
Basic Alarm Management Functions
133(2)
Advanced Alarm Management Functions
135(3)
Alarm and Event Filtering
138(2)
Alarm and Event Correlation
140(1)
Fault Diagnosis and Troubleshooting
141(2)
Proactive Fault Management
143(1)
Trouble Ticketing
143(1)
C Is for Configuration
143(8)
Configuring Managed Resources
145(1)
Auditing, Discovery, and Autodiscovery
146(2)
Synchronization
148(3)
Backup and Restore
151(1)
Image Management
151(1)
A Is for Accounting
151(4)
On the Difference Between Billing and Accounting
152(1)
Accounting for Communication Service Consumption
153(1)
Accounting Management as a Service Feature
154(1)
P Is for Performance
155(6)
Performance Metrics
155(1)
Monitoring and Tuning Your Network for Performance
156(1)
Collecting Performance Data
157(1)
S Is for Security
158(1)
Security of Management
158(1)
Management of Security
159(2)
Limitations of the FCAPS Categorization
161(1)
OAM&P: The Other FCAPS
161(2)
FAB and eTOM: Oh, Wait, There's More
163(1)
How It All Relates and What It Means to You: Using Your Network Management ABCs
164(1)
Chapter Summary
165(1)
Chapter Review
166(3)
Part III Management Building Blocks
169(160)
Management Information: What Management Conversations Are All About
171(38)
Establishing a Common Terminology Between Manager and Agent
171(2)
MIBs
173(7)
The Managed Device as a Conceptual Data Store
173(2)
Categories of Management Information
175(2)
The Difference Between a MIB and a Database
177(1)
The Relationship Between MIBs and Management Protocols
178(2)
MIB Definitions
180(9)
Of Schema and Metaschema
181(2)
The Impact of the Metaschema on the Schema
183(1)
Metaschema Modeling Paradigms
184(1)
Matching Management Information and Metaschema
185(1)
A Simple Modeling Example
186(3)
Encoding Management Information
189(1)
Anatomy of a MIB
189(13)
Structure of Management Information---Overview
190(3)
An Example: MIB-2
193(6)
Instantiation in an Actual MIB
199(3)
Special MIB Considerations to Address SNMP Protocol Deficits
202(1)
Modeling Management Information
202(3)
Chapter Summary
205(1)
Chapter Review
206(3)
Management Communication Patterns: Rules of Conversation
209(40)
Layers of Management Interactions
209(7)
Transport
211(1)
Remote Operations
211(3)
Management Operations
214(1)
Management Services
215(1)
Manager-Initiated Interactions---Request and Response
216(20)
Information Retrieval---Polling and Polling-Based Management
218(1)
Requests for Configuration Information
218(1)
Requests for Operational Data and State Information
219(4)
Bulk Requests and Incremental Operations
223(1)
Historical Information
224(2)
Configuration Operations
226(1)
Failure Recovery
227(1)
Response Size and Request Scoping
228(1)
Dealing with Configuration Files
229(1)
Actions
230(2)
Management Transactions
232(4)
Agent-Initiated Interactions: Events and Event-Based Management
236(10)
Event Taxonomy
237(1)
Alarms
238(1)
Configuration-Change Events
239(2)
Threshold-Crossing Alerts
241(2)
The Case for Event-Based Management
243(1)
Reliable Events
244(1)
On the Difference Between ``Management'' and ``Control''
245(1)
Chapter Summary
246(1)
Chapter Review
247(2)
Common Management Protocols: Languages of Management
249(44)
SNMP: Classic and Perennial Favorite
249(12)
SNMP ``Classic,'' a.k.a. SNMPv1
250(1)
SNMP Operations
250(7)
SNMP Messages and Message Structure
257(1)
SNMPv2/SNMPv2c
258(2)
SNMPv3
260(1)
CLI: Management Protocol of Broken Dreams
261(6)
CLI Overview
261(4)
Use of CLI as a Management Protocol
265(2)
syslog: The CLI Notification Sidekick
267(8)
syslog Overview
268(2)
syslog Protocol
270(2)
syslog Deployment
272(3)
Netconf: A Management Protocol for a New Generation
275(9)
Netconf Datastores
275(2)
Netconf and XML
277(1)
Netconf Architecture
278(3)
Netconf Operations
281(3)
Netflow and IPFIX: ``Check, Please,'' or, All the Data, All the Time
284(4)
IP Flows
284(2)
Netflow Protocol
286(2)
Chapter Summary
288(3)
Chapter Review
291(2)
Management Organization: Dividing the Labor
293(36)
Scaling Network Management
294(18)
Management Complexity
294(1)
Build Complexity
295(2)
Runtime Complexity
297(1)
Management Hierarchies
298(1)
Subcontracting Management Tasks
299(2)
Deployment Aspects
301(3)
Management Styles
304(1)
Management by Delegation
304(4)
Management by Objectives and Policy-Based Management
308(4)
Management by Exception
312(1)
Management Mediation
312(14)
Mediation Between Management Transports
316(1)
Mediation Between Management Protocols
316(2)
Mediation of Management Information at the Syntactic Level
318(1)
Example: A Syslog-to-SNMP Management Gateway
318(1)
Example: An SNMP-to-OO Management Gateway
319(2)
Limitations of Syntactic Information Mediation
321(2)
Mediation of Management Information at the Semantic Level
323(1)
Stateful Mediation
323(3)
Chapter Summary
326(1)
Chapter Review
327(2)
Part IV Applied Network Management
329(104)
Management Integration: Putting the Pieces Together
331(42)
The Need for Management Integration
332(10)
Benefits of Integrated Management
332(2)
Nontechnical Considerations for Management Integration
334(2)
Different Perspectives on Management Integration Needs
336(1)
The Equipment Vendor Perspective
336(2)
The Enterprise Perspective
338(1)
The Service Provider Perspective
339(1)
Integration Scope and Complexity
340(2)
Management Integration Challenges
342(9)
Managed Domain
343(2)
Software Architecture
345(1)
Challenges from Application Requirements
345(1)
Challenges from Conflicting Software Architecture Goals
346(2)
Eierlegende Wollmilchsaun and One-Size-Fits-All Management Systems
348(1)
Quantifying Management Integration Complexity
348(1)
Scale Complexity
349(1)
Heterogeneity Complexity
349(1)
Function Complexity
350(1)
Approaches to Management Integration
351(17)
Adapting Integration Approach and Network Provider Organization
352(3)
Platform Approach
355(1)
Common Platform Infrastructure
356(3)
Typical Platform Application Functionality
359(1)
Custom Integration Approach
360(1)
Solution Philosophy and Challenges
360(2)
Considerations for Top-Down Solution Design
362(3)
Component Integration Levels and Bottom-Up Solution Design
365(2)
The Role of Standardization and Information Models
367(1)
Containing Complexity of the Managed Domain
368(2)
Chapter Summary
370(1)
Chapter Review
371(2)
Service Level Management: Knowing What You Pay For
373(34)
The Motivation for Service Level Agreements
374(2)
Identification of Service Level Parameters
376(6)
Significance
377(1)
A Brief Detour: Service Level Relationships Between Layered Communication Services
377(2)
Example: Voice Service Level Parameters
379(2)
Relevance
381(1)
Measurability
381(1)
Defining a Service Level Agreement
382(1)
Definition of Service Level Objectives
382(7)
Tracking Service Level Objectives
384(2)
Dealing with Service Level Violations
386(2)
Managing for a Service Level
388(1)
Decomposing Service Level Parameters
389(13)
Planning Networks for a Given Service Level
392(1)
Dimensioning Networks to Meet Service Level Objectives
393(1)
Managing Oversubscription Risk
394(2)
Network Maintenance Considerations
396(1)
Service Level Monitoring---Setting Up Early Warning Systems
397(1)
Monitoring Service Level Parameters
397(1)
Anticipating Problems Before They Occur
398(2)
Service Level Statistics---It's Fingerpointin' Good
400(2)
Chapter Summary
402(1)
Chapter Review
403(4)
Management Metrics: Assessing Management Impact and Effectiveness
407(26)
Network Management Business Impact
408(3)
Cost of Ownership
408(1)
Enabling of Revenues
409(1)
Network Availability
410(1)
Trading Off the Benefits and Costs of Network Management Investments
410(1)
Factors that Determine Management Effectiveness
411(7)
Managed Technology---Manageability
412(4)
Management Systems and Operations Support Infrastructure
416(2)
Management Organization
418(1)
Assessing Network Management Effectiveness
418(12)
Management Metrics to Track Business Impact
419(4)
Management Metrics to Track Contribution to Management Effectiveness
423(1)
Metrics for Complexity of Operational Tasks
423(2)
Metrics for Scale
425(1)
Other Metrics
426(1)
Developing Your Own Management Benchmark
427(1)
Assessing and Tracking the State of Management
428(2)
Using Metrics to Direct Management Investment
430(1)
Chapter Summary
430(1)
Chapter Review
431(2)
Part V Appendixes
433(2)
Appendix A Answers to Chapter Reviews 435(28)
Appendix B Further Reading 463(12)
Glossary 475(13)
Index 488

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