2.17 Notes about setup
This section provides notes about setting up SNMP Agent that are common to all OSs. For OS-specific notes, see the relevant subsection.
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General notes about network environment settings
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You must set the local host name because SNMP Agent uses the IP address for the local host name as the local host's IP address.
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The host name defined in trap-dest: in /etc/SnmpAgent.d/snmpd.conf can be converted to the IP address.
There is no need to specify DNS-related settings.
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Notes about using a firewall for system-to-system communication
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If there is a firewall between manager system and SNMP Agent, configure the environment so that the SNMP protocol is effective across the firewall. SNMP Agent generally receives SNMP requests via the 161/udp port and sends SNMP traps to the 162/udp port on the manager host.
For details about the settings that are to be added to the firewall, see B.2 Direction in which data passes through a firewall.
If you have changed the port through which SNMP requests are received from SNMP Agent, change the corresponding firewall settings as well. For details about the ports that are used by SNMP Agent at the local host, see B.1 Port numbers used by SNMP Agent.
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SNMP Agent sends SNMP traps to the 162/udp port of the manager host. For notes about the SNMP reception port when overwrite installation is performed on SNMP Agent version 07-50 or earlier, see 2.4 Notes about installation.
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Notes about renaming the local host
If you renamed the host after installing SNMP Agent and you want to use a host name with a different sysName value, see 3.7.4 Notes about renaming a host.
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Notes about changing the manager system's IP address or host name
Check and, if necessary, revise the IP address or host name defined in trap-dest: in the configuration file (/etc/SnmpAgent.d/snmpd.conf).
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Notes about the /etc/hosts file
To use the naaagt process on an OS other than HP-UX (IPF), set the IP address for localhost in the /etc/hosts file as shown in the example below:
- Example:
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127.0.0.1 localhost
When the naaagt process starts, it searches for the IP address needed for communicating with the local host's native agent, using the OS function and localhost as the key value. If this IP address search fails, the naaagt process terminates itself because it cannot communicate with the native agent.
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Notes about file systems
For file system information, the following MIB objects are available:
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fileSystem group (general 2)
For details, see (2) fileSystem group in 4.2.2 Description of Hewlett-Packard enterprise-specific MIB objects.
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fileSystem64 group (hiux 21)
For details, see (20) fileSystem64 group in 4.3.2 Description of Hitachi enterprise-specific MIB objects.
You can set these MIB objects to not send specific file system information as a response. For details, see (20) fileSystem64 group in 4.3.3 Implementation of Hitachi enterprise-specific MIB objects.
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- Organization of this section