Unified network configuration and control method supporting packet/circuit mixed exchange network

Abstract

The invention discloses a unified network configuration and control method supporting the packet / circuit mixed exchange network, and the configuration and control method can realize unified control for the packet / circuit heterogeneous exchange network and greatly reduce end-to-end routing time delay. Each circuit exchange subnet is provided with a virtual router, and the virtual routers and practical routers form a virtual network topology which is used for routing calculation and connection control. Part of bandwidth resource is separated from each circuit exchange subnet to form a catching layer, and residual resources form a load layer. Fixed connection among all edge node pairs of the subnet is established in the catching layer. When a serve crossing the subnet arrives, data transmission is carried out via fixed connection of the catching layer, and new connection is established for the service in the load layer. After new connection is established, service carried in the catching layer is switched to newly established connection of the load layer, and resource of fixed connection of the catching layer is released.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a unified network architecture and control method supporting packet circuit mixed switching network. Background technique [0002] With the rapid development of data services such as mobile communications, broadband access, data centers, and cloud computing, the importance of IP data networks is increasing day by day. In order to support the dynamic on-demand establishment of end-to-end data services and flexible resource scheduling, the dynamic interworking and integration of the optical bearer network and the IP data network is crucial and imminent: without the establishment of large-bandwidth channels on the optical bearer network, the IP data network will Facing the bottleneck of high cost, high energy consumption and scalability; similarly, without the support of IP data network, the excessive switching granularity of optical bearer network will lead to the ina...

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Problems solved by technology

This delay difference will lead to the problem of cooperative control during service establishment and fault recovery, which constitutes a major obstacle to the unified control of packet / circuit hybrid switching networks

In addition, unlike the control of a single IP network, the control architecture of a hybrid switching network needs to consider the limitations of the physical layer of the optical bearer network, such as optical power, physical damage, signal accessibility, connection establishment rate, available bandwidth, and switching granularity. This constitutes another obstacle to the dynamic interworking and convergence of packet-switched and circuit-switched networks

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