In the SNMPv3 protocol, both SNMP agent and manager must encode identical credentials in their PDUs for the communication to succeed. The credentials include several tokens: a user name, an SNMP engine ID, an authorization protocol, and an optional privacy password.
In WebLogic Server, SNMP agents work with the domain's security realm to secure communication. The SNMP agent decodes SNMP credentials in requests and passes the SNMP user name to the security realm. The security realm maps the SNMP user name to a WebLogic Server user, authenticates the user, and authorizes access to monitoring data in the domain. To map the SNMP credentials to a user in a WebLogic Server security realm, you create a credential map.
The next step of this task requires you to add a user to the security realm. You cannot edit security realm data while you have a lock on the domain's configuration.
The user name must match the user name that SNMP managers encode in their requests. See Create users.
For example, if SNMP managers encode the user name joe in their requests, then create a WebLogic Server user named joe and assign joe to the Monitors security group.