The invention provides a dynamic software definition light access to aggregation network bandwidth adjustment method and a device Multiple homologous homoclinic paths form a path set, and corresponding flows are distributed to the multiple paths Through aggregation network flow monitoring, the flow distribution path quantity and the flow on each path are dynamically adjusted, not only can a request success rate and a user bandwidth satisfaction degree be improved, user experience is improved, but also a purpose of load balancing can be realized through dynamically adjusting the flow paths, and a resource utilization rate is improved

Dynamic software definition light access to aggregation network bandwidth adjustment method and device

The invention provides a differentiated QoS based multi-service hierarchical topology routing method and system. The method includes the following steps: S1, based on the quality of service (QoS) requirements of services, calculating a link bandwidth threshold required for each type of service; and S2, according to the bandwidth threshold and the current network state, deleting links that do not satisfy the bandwidth threshold in the network topology, generating a hierarchical topology for each type of service, and calculating the shortest routing path of each type of service on the hierarchical topology. The corresponding logical hierarchical topology is generated for each type of service, the QoS requirements of the services and the load balancing of the network are comprehensively considered, the load balancing level of the network can be effectively improved, the interaction effect between service flows can be reduced, the network load balancing can be maximally optimized in the routing process of distinguishing the services, and thus each link can have the maximum residual bandwidth, the local congestion of the network can be reduced, and the interaction effect between the service flows can be reduced.

Differentiated QoS based multi-service hierarchical topology routing method and system

The invention discloses a scheduling method of a plurality of fixed bandwidth variable paths in high-performance networks. Parallel transmission using multiple node disjoint paths can increase throughput and avoid congestion caused by excessive loads on some links, and also can increase transmission reliability by using other paths when some nodes in one path fail. In this way, the network servicequality is improved on the whole.

Scheduling method of a plurality of fixed bandwidth variable paths in high-performance networks

The invention discloses a flow distribution method and device The flow distribution method comprise the steps of determining a finally called bandwidth which corresponds to each service transmitted through a first link when monitoring that a real-time bandwidth state of the first link meets a flow distribution condition, wherein the first link is any one of links monitored by an SDN controller, the finally called bandwidth is the bandwidth occupied by the maximum flow in the first link, and the maximum flow is the flow which can be scheduled from the first link to other selectable links within unit time; determining a service waiting for flow distribution from each service based on the finally called bandwidth corresponding to each service; sending a first flow distribution indication toa start node of the first link based on a first flow distribution result obtained in a determination process of the finally called bandwidth which corresponds to the service waiting for flow distribution, so as to indicate the start node of the first link to perform flow distribution on the service waiting for flow distribution based on the first flow distribution result Based on the flow distribution method and device provided by the invention, the scheduling flexibility of flow distribution of the SDN controller can be improved

Flow distribution method and device

The embodiments of the invention disclose a method and a system for dynamically adjusting an equivalent path traffic based on a programmable switch chip. The method comprises: monitoring and collecting bandwidth information of each equivalent path in each forwarding group; calculating, according to the bandwidth information, remaining bandwidth of each path, and determining a data stream to be migrated and a migration mode to form a policy route; and migrating, according to the policy route, the data stream to be migrated between equivalent paths. The traffic of multiple equivalent paths of aswitch is checked and analyzed in real time based on the programmable switch chip, the traffic of the multiple paths is dynamically adjusted according to the current traffic status, and the traffic onthe multiple paths is uniformly distributed to each equivalent path, so that the bandwidth utilization of the switch in the case of multiple equivalent paths is improved.

Method and system for dynamically adjusting equivalent path traffic based on programmable switch chip

We propose a dynamic bandwidth management approach for software defined optical access and aggregation networks. Simulation shows it enables automatic bandwidth adjustment and traffic engineering among multiple paths based on monitored aggregation traffic so as to make efficient use of network bandwidth and improve service experience.

Novel Dynamic Bandwidth Management Approach for Software Defined Optical Access and Aggregation Networks

We propose a link-disjoint path computation and resource pre-locking scheme for hierarchical controlled multi-domain PTN, in order to decrease the path setup delay and improve resource utilization, as well as eliminate concurrent reservation conflicts. Simulations show its better performance in terms of disjoint path setup delay and blocking rate.

End-to-End Link-Disjoint Path Computation and Resource Pre-Locking Scheme for Multi-Domain Packet Transport Networks

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Papers

Dynamic software definition light access to aggregation network bandwidth adjustment method and device

Novel Dynamic Bandwidth Management Approach for Software Defined Optical Access and Aggregation Networks

End-to-End Link-Disjoint Path Computation and Resource Pre-Locking Scheme for Multi-Domain Packet Transport Networks