This command is available to Administrators and Operators.
When changing the parameters of SNMP users, you must set values for all of the properties, even if you are not changing all of the values. You can change SNMP user permissions without resetting the privacy and authentication properties.
authenticationprotocol - MD5 or SHA
authenticationpassword - enter the Authentication password for your SNMP environment.
permissions - ro (Operator) or rw (Administrator)
privacyprotocol - DES or none.
privacypassword - enter the Privacy password for your SNMP environment.