1. Chapter 1 What Is SNMP?

   1. Network Management and Monitoring

   2. RFCs and SNMP Versions

   3. Managers and Agents

   4. The Structure of Management Information and MIBS

   5. Host Management

   6. A Brief Introduction to Remote Monitoring (RMON)

   7. Getting More Information

2. Chapter 2 A Closer Look at SNMP

   1. SNMP and UDP

   2. SNMP Communities

   3. The Structure of Management Information

   4. Extensions to the SMI in Version 2

   5. A Closer Look at MIB-II

   6. SNMP Operations

   7. Host Management Revisited

   8. Remote Monitoring Revisited

3. Chapter 3 NMS Architectures

   1. Hardware Considerations

   2. NMS Architectures

   3. A Look Ahead

4. Chapter 4 SNMP-Compatible Hardware

   1. What Does SNMP-Compatible Really Mean?

   2. Is My Device SNMP-Compatible?

   3. Upgrading Your Hardware

   4. In the End

   5. A Look Ahead

5. Chapter 5 Network-Management Software

   1. SNMP Agents

   2. NMS Suites

   3. Element Managers (Vendor-Specific Management)

   4. Trend Analysis

   5. Supporting Software

6. Chapter 6 Configuring Your NMS

   1. HP's OpenView Network Node Manager

   2. Castle Rock's SNMPc Enterprise Edition

7. Chapter 7 Configuring SNMP Agents

   1. Parameter Settings

   2. Security Concerns

   3. Agent Configuration Walkthroughs

8. Chapter 8 Polling and Setting

   1. Retrieving a Single MIB Value

   2. Retrieving Multiple MIB Values

   3. Setting a MIB Value

   4. Error Responses

9. Chapter 9 Polling and Thresholds

   1. Internal Polling

   2. External Polling

10. Chapter 10 Traps

    1. Understanding Traps

    2. Receiving Traps

    3. Sending Traps

11. Chapter 11 Extensible SNMP Agents

    1. Net-SNMP

    2. SystemEDGE

    3. OpenView's Extensible Agent

12. Chapter 12 Adapting SNMP to Fit Your Environment

    1. General Trap-Generation Program

    2. Who's Logging into My Machine? (I-Am-in)

    3. Throw Core

    4. Veritas Disk Check

    5. Disk-Space Checker

    6. Port Monitor

13. Chapter 13 MRTG

    1. Using MRTG

    2. Viewing Graphs

    3. Graphing Other Objects

    4. Other Data-Gathering Applications

    5. Pitfalls

    6. Getting Help

1. Appendix A Using Input and Output Octets

2. Appendix B More on OpenView's NNM

   1. Using External Data

   2. Adding a Menu to NNM

   3. Profiles for Different Users

   4. Using NNM for Communications

3. Appendix C Net-SNMP Tools

   1. Net-SNMP and MIB Files

   2. Common Command-Line Arguments

   3. Net-SNMP Command-Line Tools

4. Appendix D SNMP RFCs

   1. SMIv1 Data Definition Language

   2. SMIv2 Data Definition Language

   3. SNMPv1 Protocol

   4. SNMPv2 Protocol

   5. SNMPv3 Protocol

   6. SNMP Agent Extensibility

   7. SMIv1 MIB Modules

   8. SMIv2 MIB Modules

   9. IANA-Maintained MIB Modules

   10. Related Documents

5. Appendix E SNMP Support for Perl

   1. MIB Management Routines

   2. SNMP Operations

6. Appendix F SNMPv3

   1. Changes in SNMPv3

   2. Configuring SNMPv3

   3. Final Words on SNMPv3

7. Colophon

Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects. The animals on the cover of Essential SNMP are red deer (Cervus elaphus). Male red deer, also known as stags or harts, can grow to over 400 lbs. and stand 42 inches tall at the shoulder. Females, or hinds, are more slightly built and usually reach a weight of only about 200 lbs. The color of the red deer's coat ranges from a warm reddish-brown in the summer to a darker grayish-brown in winter. Calves are spotted at birth, but the spots fade after about two months.

The typical family group consists of a hind, a new calf, a yearling calf, and perhaps a two-year-old stag. Mature stags and hinds live in separate groups for most of the year, with the hinds tending to monopolize the better, more grassy habitats. At the start of the mating season (the rut) in the early fall, the stags split up and join the females. Each eligible stag establishes a harem of up to 20 or more hinds, which he defends vigorously during the rut. During this period, which typically lasts six weeks, the stags often forego eating and can lose as much as 15% of their body mass.

Red deer are one of the most widely distributed deer species: though they are native to Europe, today they can be found everywhere from New Zealand to North America. They are herbivores, feeding mainly on rough grasses, young tree shoots, and shrubs. Forest-dwellers by nature, they can adapt easily to different climates and terrain. In many of the areas in which they were introduced, red deer are commercially farmed for venison and antler velvet, which has been used in traditional Chinese medicine for over 2,000 years to treat a broad range of ailments including anemia, arthritic pain and rheumatism, kidney disorders, and stress. Rachel Wheeler was the production editor and copyeditor for Essential SNMP. Colleen Gorman was the proofreader and Catherine Morris provided quality control. Sada Preisch provided production assistance. Jan Wright wrote the index.

Ellie Volckhausen designed the cover of this book, based on a series design by Edie Freedman. The cover image is a 19th-century engraving from the Dover Pictorial Archive. Emma Colby produced the cover layout with QuarkXPress 4.1 using Adobe's ITC Garamond font.

David Futato designed the interior layout based on a series design by Nancy Priest. Neil Walls converted the files from Microsoft Word to FrameMaker 5.5.6 using tools created by Mike Sierra. The text and heading fonts are ITC Garamond Light and Garamond Book; the code font is Constant Willison. The illustrations that appear in the book were produced by Robert Romano and Jessamyn Read using Macromedia FreeHand 9 and Adobe Photoshop 6. This colophon was written by Rachel Wheeler.