Various embodiments herein include at least one of systems, methods, and software to connect network and system management systems. Some such embodiments include a metric message connector that obtains network entity metric messages from a first network and system management system and communicates the obtained metric message to a second network and system management system. The metric message connector may transform network entity metric messages from an original form into a different form or format, such as a form or format having meaning with the second network and system management system. The network entity metric message may be Simple Network Management Protocol messages.