Research on the Networking and Security Protection Scheme of Prefectural-Level Power Data Communication Access Networks

This article presents the rationality of the technical solution for prefectural-level data communication access networks' full - coverage and security protection. It focuses on the flat - structure and large - broadcast - domain problems in prefectural - level networks. Following State Grid's guidance, it suggests adding aggregation - layer nodes, which ensures network reliability and offers device - configuration flexibility. An innovative hybrid networking of Level 2 MPLS VPN and LAN extension is proposed at the access layer, along with a dynamic selection algorithm for Level 2 aggregation nodes. Experiments prove these schemes enhance network performance and security, being crucial for the construction of such networks.