Since the network management research and standardization in late 1980s, several approaches have been applied, from protocol-based ones, to Web-based ones, and recently, XML-based ones. These days, Web services, in particular, have been emerging as a promising XML-based architecture consisting of several XML-based technologies, and it seems that Web services may be used in the field of network management. In this paper, we survey the key aspect of XML-based approach to network management. We then examine Web services as a XML-based approach to network management, and provide standardization for management information definition and access offered by XML-related technologies. Since Web services are a Service-Oriented Architecture (SOA) more than just a set of technology, Web services could be used in XML-based network management at the SOA level recur to the concept of Peer-to-Peer. Correspondingly, a prototype is provided to further demonstrate the potential of Web services-based SOA in XML-based network management.