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destination for the SNMP master agent from Enterprise Server. You can also view,
edit, and remove the trap destinations you have already configured. When you
configure trap destinations using Enterprise Server, you are actually editing the
CONFIG
Enabling the Subagent
After you have installed the master agent that comes with the Administration
Server, you must enable the subagent for your server instance before you attempt
to start it. For more information on installing the master agent, see "Installing the
SNMP Master Agent" on page 233. You can use the Server Manager to enable the
subagent.
To stop the SNMP function on UNIX/Linux platforms, you must stop the subagent
first, then the master agent. If you stop the master agent first, you may not be able
to stop the subagent. If that happens, restart the master agent, stop the subagent,
then stop the master agent.
To enable the SNMP subagent, use the SNMP Configuration page in the Server
Manager, and start the subagent from the SNMP Subagent Control page. For more
information, see the corresponding sections in the online help.
Once you have enabled the subagent, you can start, stop or restart it from the
SNMP Subagent Control page or the Services Control Panel for Windows NT.
NOTE
Understanding SNMP Messages
GET and SET are two types of messages defined by SNMP. GET and SET messages
are sent by a network management station (NMS) to a master agent. You can use
one or the other or both with the Administration Server.
SNMP exchanges network information in the form of protocol data units (PDUs).
These units contain information about variables stored on the managed device,
such as the web server. These variables, also known as managed objects, have
values and titles that are reported to the NMS as necessary. Protocol data units sent
by the server to the NMS are known as "traps." The use of GET, SET, and "trap"
messages are illustrated in the following examples.
file.
After making any SNMP configuration changes, you must click the Apply
button, then restart SNMP subagent.
Enabling the Subagent
Chapter 10
Monitoring Servers
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