Chapter 1 provides a nontechnical overview of network management with SNMP. We introduce the different versions of SNMP as well as the concepts of managers and agents.
Chapter 2 discusses the technical details of SNMP. We look at the Structure of Management Information (SMI) and the Management Information Base (MIB) and discuss how SNMP actually works; i.e., how management information is sent and received over the network.
Chapter 3 helps you to think about strategies for deploying SNMP.
Chapter 4 discusses what it means when a vendor says that its equipment is “SNMP-compatible.”
Chapter 5 introduces some of the available network-management software. We discuss the pros and cons of each package and provide pointers to vendors’ web sites. We include both commercial and open source packages in the discussion.
Chapter 6 provides a basic understanding of what to expect when installing NMS software by looking at two NMS packages, HP’s OpenView and Castle Rock’s SNMPc.
Chapter 7 describes how to configure the Windows SNMP agent and several SNMP agents for Unix, including the Net-SNMP agent. To round the chapter out, we discuss how to configure the embedded agents on two network devices: the Cisco SNMP agent and the APC Symetra SNMP agent.
Chapter 8 shows how you can use command-line tools and Perl to gather (poll) SNMP information and change (set) the state of a managed device.
Chapter 9 discusses how to configure OpenView and SNMPc to gather SNMP information via polling. This chapter also discusses RMON configuration on a Cisco router.
Chapter 10 examines how to send and receive traps using command-line tools, Perl, OpenView, and other management applications.
Chapter 11 shows how several popular SNMP agents can be extended. Extensible agents provide end users with a means to extend the operation of an agent without having access to the agent’s source code.
Chapter 12 is geared toward Perl-savvy system administrators. We provide Perl scripts that demonstrate how to perform some common system-administration tasks with SNMP.
Chapter 13 introduces one of the most widely used open source SNMP applications, the Multi Router Traffic Grapher (MRTG). MRTG provides network administrators with web-based usage graphs of router interfaces and can be configured to graph many other kinds of data.
Appendix A discusses how to use OpenView to graph input and output octets.
Appendix B discusses how to graph external data with Network Node Manager (NNM), add menu items to NNM, configure user profiles, and use NNM as a centralized communication interface.
Appendix C summarizes the usage of the Net-SNMP command-line tools.
Appendix D provides an authoritative list of the various RFC numbers that pertain to SNMP.
Appendix E is a good summary of the SNMP Perl module used throughout the book.
Appendix F provides a brief introduction to SNMPv3. Two configuration examples are provided: configuring SNMPv3 on a Cisco router and configuring SNMPv3 for Net-SNMP.
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