Abstract
Network function virtualization (NFV) provides flexible and scalable network services by leveraging software-based network appliances. In an NFV architecture, the virtual network function manager (VNFM) has a critical role in provisioning, configuring, and operating virtual network functions (VNFs) and service function chaining (SFC). In addition, the VNF manager should provide other functions to guarantee high availability of network services, such as fault management, monitoring and auto scaling. Currently, many open source projects aim to implement these functions, but there is no standard method of monitoring and detecting failure of SFC and VNFs. Therefore, we propose an alarm-based monitoring driver architecture to support high-availability VNF. This driver can activate an alarm upon VNF failure and will be used to support high-availability SFC. This monitoring driver is implemented in a cloud environment to show its feasibility and advantages.
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