ETSI GS NFV-REL 004开发了一份报告，详细说明了主动监控VNFs、NFVI和E2E网络服务以及故障检测的方法。它解决了主动监控的以下两个方面:在实时环境中定期测试VNF和服务链，以确保适当的功能和性能 性能符合SLA。故障预防和检测-故障预防（主动）或及时的主动监测方法 故障检测和恢复。故障包括网络连接丢失或退化、丢失或损坏 会话容量降低、服务丢失、虚拟机故障、虚拟机暂停等。本文件建议，与其他VNF一样，将监控代理安装到NFV环境中。

ETSI GS NFV-REL 004 develops a report detailing methods for active monitoring of VNFs, NFVI and E2E network services and detection of failures. It addresses the following two aspects of active monitoring:Periodic testing of VNFs and service chains in a live environment to ensure proper functionality and performance adherence to SLAs.Failure prevention and detection - Active monitoring methods for failure prevention (proactive) or timely detection and recovery from failures. Failures include loss or degradation of network connectivity, loss or degradation of session capacity, loss of services, VM failures, VM stalls, etc.The present document proposes that the monitoring agents be on boarded into the NFV environment, just like other VNFs.