Management software falls into five categories:
This chapter presents a broad survey of some of the leading products in each of these categories. Since there are more packages than we can cover in this book, be sure to check the Network Management Server (http://netman.cit.buffalo.edu/Products.html ) for network-management product listings.
Before you can look at what types of agents you need, you must research what types of devices you have on your network and what types of information you would like to receive from each. Some agents are very basic and return only a limited amount of information, while others can return a wealth of information. To start, determine whether you need to receive information from servers (Unix, Windows NT, etc.) or network devices (routers, switches, etc.). Generally, out-of-the-box network-type devices provide more information than their server counterparts. On the other hand, network devices do not extend very easily, if at all, in part because network hardware usually doesn't have a disk-based operating environment. This keeps the end user from accessing the agent to make modifications or extend it. The rest of this section provides information about some of the software packages that are currently available for use as SNMP agents.
See Chapter 11, "Extensible SNMP Agents" for a discussion of extensible agents.
TIP: Make sure that you understand what kind of software is running on your servers (email systems, accounting packages, etc.). Many applications will not listen or respond to SNMP requests, but will send out traps. Traps can be very useful for monitoring some of these applications. Also, there are applications for virus scanners, remote logins (pcAnywhere), and UPSs that will send informative traps when an error has been found. Look for this feature the next time you purchase any package or software suite.
|HP Extensible SNMP Agent||http://www.openview.hp.com|
|Net-SNMP (Formerly the UCD-SNMP project.)||http://net-snmp.sourceforge.net|
Copyright © 2002 O'Reilly & Associates. All rights reserved.