The OSNMP.CONF file is used to define target agents and, for SNMPv3, the security parameters to be used in sending requests to them.
The contents of the file, regardless of location, are the same. Only the first file found is used. A sample of this file is installed as file /usr/lpp/tcpip/samples/snmpv2.conf. This sample should be copied and modified for your installation. See z/OS Communications Server: IP Configuration Reference for more information.