Research on PCEP Extension for VLAN-based Traffic Forwarding in cloud network integration

With the development of SDN technology, PCEP has become a path computing protocol widely used in the existing network. It takes the controller as the core of the overall architecture, and can be applied to calculate constrained paths in cross layer and cross domain environments in complex networks. According to the discussion on the application of PCEP in cloud-network integration scenarios, this paper proposes a VLAN-based traffic assurance mechanism based on the extension of PCEP. It can meet the requirements of key service assurance in the native IP environment and establish a connection oriented network tunnel. Under the VLAN-based architecture based on PCEP, the operator can perform closed-loop automatic control of the network and the mechanism helps to improve the intelligent scheduling of the network and the ability of real-time perception which meets the maintenance and operation requirements like flexible architecture, comprehensive opening of capabilities and global scheduling of resources.