A system determination apparatus 1 includes: a calculation unit (31) configured to calculate a variation coefficient representing a degree of variation of traffic and an average traffic amount corresponding to a plurality of days using traffic data of a network apparatus (3) corresponding to the plurality of days; and a determination unit (34) configured to determine a system of the network apparatus (3) using a density of a data group representing a relationship between the variation coefficient and the average traffic amount corresponding to the plurality of days, and the determination unit (34) determines the network apparatus (3) to be a non-operation system in a case where a density of the data group is equal to or higher than a first threshold and determines the network apparatus (3) to be an operation system in a case where the density of the data group is lower than the first threshold.

Example security systems for use between at least one upstream router and at least one downstream router, are described. A group or pool of security devices can be used to provide stateful security to bidirectional packet flows between upstream and downstream routers. The packets of the bidirectional flows are forwarded to particular security devices based on a consistent hash ring process. For a given flow, bidirectional state information is synchronized among some, but not all, of the security devices. The security devices among which such bidirectional flow state information is shared are determined using the same consistent hash ring process.

State of the art networking solutions are tightly coupled and proprietary in nature due to multiple vendors in the networking domain. Embodiments of the present disclosure provide a method and system for management and orchestration of heterogeneous network environment using dynamic, robust and network aware microservices. The method enables a platform for automatically and dynamically identifying appropriate group of microservices in accordance with network type and service type specified by the user, thus providing a solution that generates network aware microservices for each network in the heterogeneous network landscape. Furthermore, the system manages the identified microservices for each of the network by managing the life cycle of these microservices. The right life cycle management and coordination of the microservices for the network is in-line with desired goals/business logic, in a reliable and scalable manner, in heterogeneous network environments.

State of the art networking solutions are tightly coupled and proprietary in nature due to multiple vendors in the networking domain. Embodiments of the present disclosure provide a method and system for management and orchestration of heterogeneous network environment using dynamic, robust and network aware microservices. The method enables a platform for automatically and dynamically identifying appropriate group of microservices in accordance with network type and service type specified by the user, thus providing a solution that generates network aware microservices for each network in the heterogeneous network landscape. Furthermore, the system manages the identified microservices for each of the network by managing the life cycle of these microservices. The right life cycle management and coordination of the microservices for the network is in-line with desired goals/business logic, in a reliable and scalable manner, in heterogeneous network environments.

A network relay device of a gateway redundancy system is provided with: a storage unit which stores, as an internal status, a redundancy status indicating, for each subscriber terminal or for each subscriber terminal group, whether a subject device is operating as an active system or a backup system, and a subscriber status indicating a list of usage address information for each subscriber terminal; and a management unit which monitors communications between a set of subscriber terminals and another network relay device in which a redundant configuration is adopted, records in the storage unit, as a part of the subscriber status, the usage address information provided to the subscriber terminal by the other network relay device, and, with a prescribed timing, successively notifies/advertises the successively recorded internal status to a notification destination.

An apparatus, system, and method for balancing traffic loads on beam outroutes that contain both multicast and unicast traffic. An outroute is designated for supplying at least multicast traffic within a beam of a satellite communication system. Terminals interested in receiving the multicast traffic are moved to the designated outroute. Traffic loads on all outroutes within the beam, including the designated outroute, are compared to determine if variations in the traffic loads exceed a predetermined threshold. A load balancing routine is performed to redistribute the traffic loads on all outroutes, while excluding any terminal that is actively receiving the multicast traffic from the load balancing routine.

Provided a management apparatus including a maintenance mode setting unit that transitions a first virtualization infrastructure (NFVI0) to a maintenance mode, a mobility control unit that at least instructs a virtualization deployment unit (VDU) on the first virtualization infrastructure in the maintenance mode to move to a second virtualization infrastructure (NFVI1), and a maintenance mode release unit that releases the maintenance mode of the first virtualization infrastructure (NFVI0).

A method, computer readable medium, and computer network are provided for performing a synchronization operation. The method may comprise retrieving a list of network addresses of all standby servers in a standby server pool. The method may further include, using the list of network addresses, sending a health check query to each standby server in the standby server pool, and receiving response messages from the standby servers in the standby server pool. A positive response may indicate that the standby server is active in the standby server pool, and a negative response may indicate that the standby server is inactive in the standby server pool. The method may include, when any standby server returns the positive response, sending a message to an administrator. The method may further include, when every standby server returns the negative response, initiating a synchronization operation on a standby database connected to the standby servers.

A method, computer readable medium, and computer network are provided for performing a synchronization operation. The method may comprise retrieving a list of network addresses of all standby servers in a standby server pool. The method may further include, using the list of network addresses, sending a health check query to each standby server in the standby server pool, and receiving response messages from the standby servers in the standby server pool. A positive response may indicate that the standby server is active in the standby server pool, and a negative response may indicate that the standby server is inactive in the standby server pool. The method may include, when any standby server returns the positive response, sending a message to an administrator. The method may further include, when every standby server returns the negative response, initiating a synchronization operation on a standby database connected to the standby servers.

A secondary routing device is configured as a backup routing device for a primary routing device. The primary routing device performs asynchronous socket replication with the secondary routing device. The secondary routing device includes a transmission buffer, in memory, for storing replicated socket data transmitted between the primary routing device and the standby routing device and one or more processors implemented in circuitry and configured to execute a replication driver to: determine a threshold value; determine that an amount of data equaling or exceeding the threshold value has been read from the transmission buffer; in response to determining that the amount of data equaling or exceeding the threshold value has been read from the transmission buffer, schedule a window update for the transmission buffer at a scheduled time; and send the window update at the scheduled time.