Abstract: Example methods and systems for routing domain computation are described. In one example, a computer system may assign multiple logical entities with respective routing domain identifiers (IDs) by processing network topology information using multiple compute nodes. In response to detecting a network topology change associated with a particular logical entity, the computer system may determine first state change information identifying a first update to first state information maintained by a first compute node; and second state change information identifying a second update to second state information maintained by a second compute node. Further, the particular logical entity with an updated routing domain ID based on the first state change information and the second state change information. The updated routing domain ID may be used in a communication between a management entity and host(s) supporting the particular logical entity.

Abstract: Example methods and systems for routing domain computation are described. In one example, a computer system may assign multiple logical entities with respective routing domain identifiers (IDs) by processing network topology information using multiple compute nodes. In response to detecting a network topology change associated with a particular logical entity, the computer system may determine first state change information identifying a first update to first state information maintained by a first compute node; and second state change information identifying a second update to second state information maintained by a second compute node. Further, the particular logical entity with an updated routing domain ID based on the first state change information and the second state change information. The updated routing domain ID may be used in a communication between a management entity and host(s) supporting the particular logical entity.

Abstract: Example methods are provided for a first host to perform packet flow information invalidation in a software-defined networking (SDN) environment. One example method may comprise learning packet flow information based on one or more packets from a second host, the packet flow information being stored in association with a packet flow information identifier assigned to the second host. The method may further comprise: in response to detecting, from a third host or management entity, a notification indicating a network topology change that involves the second host, determining the packet flow information identifier assigned to the second host based on the notification; and invalidating the packet flow information stored in association with the packet flow information identifier.

Abstract: Example methods are provided for a first host to perform packet flow information invalidation in a software-defined networking (SDN) environment. One example method may comprise learning packet flow information based on one or more packets from a second host, the packet flow information being stored in association with a packet flow information identifier assigned to the second host. The method may further comprise: in response to detecting, from a third host or management entity, a notification indicating a network topology change that involves the second host, determining the packet flow information identifier assigned to the second host based on the notification; and invalidating the packet flow information stored in association with the packet flow information identifier.

Abstract: A method, computer readable medium and apparatus for providing a virtual individual server service within a communications network are disclosed. For example, the method receives a request from a subscriber of the communications network to subscribe to the virtual individual server service, provides a virtual individual server to the subscriber in response to the request and executes at least one application via the virtual individual server using at least one piece of personal information associated with the subscriber.