Abstract: The present disclosure provides methods and systems for creating and managing the accessibility of YANG-related data in YANG Datastore. Received requests for data access to YANG-related data from an application typically includes an owner ID and group ID information of the application. The owner ID is unique and the application ID of its owner application defined by a YANG module. The group ID is created and assigned to a group of applications by the owner application. The owner ID, group ID, and access rights information may be compared with an access modifier table defined by a YANG Datastore Manager. Based on the comparison, the application is allowed to execute the requested data access to the YANG-related data or is provided with an error message indicating the data access is denied.

Abstract: The present disclosure discloses methods and architectures for providing improved status reporting communications between management plane and control plane operations in a software-defined networking (SDN) communication system. A user configuration request is received to establish a connection with a server and to implement a configuration change of a network element. An operational ID and a control plane job ID are assigned to the user configuration request. A correlation module correlates the assigned operational ID with the assigned control plane job ID. The control plane is requested to verify the implementation of the user configuration request based on the corresponding control plane operation.

Abstract: A service description may be used in network virtualization in order to specify requirements of an application. In order to provide network virtualization for generic networking components, including legacy networking components, the service description is mapped to a logical network implementation and then subsequently mapped to a physical implementation.

Abstract: Routers using virtual routing and forwarding nodes to implement a service fabric of service chains. The router may configure M+1 virtual routing and forwarding instances, M being an integer representing a number of a plurality of service appliances in a data center network. Each virtual routing and forwarding instance may be associated with a routing table of routing rules to define various service chain routing paths. The routing rules are based on destination addresses in data packets.

Abstract: The devices, systems, and methods test network connectivity, where the physical network is used to provide one or more service chains connecting service appliances, including firewalls, intrusion detection systems, load balancers, network address translators, web servers, and so on. A service chain may involve multiple routing paths. The devices, systems, and methods test network connectivity test network connectivity by injecting customized echo request packets on each routing path and collecting customized echo reply packets in response. The customized echo reply packets are processed and aggregated to isolate network connectivity problems.

Abstract: A service description may be used in network virtualization in order to specify requirements of an application. In order to provide network virtualization for generic networking components, including legacy networking components, the service description is mapped to a logical network implementation and then subsequently mapped to a physical implementation.