Abstract: Method comprises obtaining a network snapshot of a plurality of network entities existing at a predetermined discovery level. Network entity delta between the network snapshot and a previous network snapshot is computed. Network entity delta indicates modifications made to the predetermined discovery level since capturing of a preceding network snapshot. At least one network entity, existing at the predetermined discovery level, which was not previously registered in a service management database, is ascertained. The at least one network entity is service stitched with one or more network entities based on service stitching rules and entity catalogs to define associations between the at least one network entity and the one or more network entities for activating the at least one network entity. Each entity catalog defines attributes of the corresponding network entity and parent-child relationship between the corresponding network entity and another network entity.

Abstract: The present subject matter relates to fault monitoring in multi-domain networks. In an example, alarm messages associated with multiple network entities in the multi-domain network are received. Upon receiving the alarm messages, state information of network entities traversed by services across the multi-domain network prior to receiving the alarm messages is acquired. The state information of the network entities for each of the services comprises hierarchical relationships between physical level entities, logical level entities, and service level entities traversed by a respective service. A network entity is identified from the acquired state information that matches with the faulty network entity corresponding to each of the alarm messages. Services that are impacted by the faulty network entity are determined based on traversing the state information of the network entities, through the hierarchical relationships, from the identified network entity to the service level entities.

Abstract: Method for deployment of communication networks includes obtaining entity attribute data corresponding to a plurality of network entities associated with a communication network. The plurality of network entities may include physical entities, logical entities, and service entities. Further, the method includes defining association between at least one network entity and at least one other network entity based on one or more pre-defined association rules and the entity attribute data. The method also includes generating a network model, based on the defined association between the at least one network entity and the at least one other network entity, for deployment of the communication network. The network model represents association between the at least one network entity and the at least one other network entity.