Network centralized control method, system and multi-domain controller

Abstract

The invention discloses a network centralized control method, a system and a multi-domain controller. The method comprises the steps of calculating the end-to-end connection path according to a link state reported by a single-domain controller and network topology information; and dividing the end-to-end connection path into connection path information inside the domain of the single-domain controller. The method further comprises the step that the single-domain controller finishes the connection establishment inside the domain according to the received connection path information in the domain. The rationality of the connection path can be confirmed before the connection establishment. Conditions that established connection needs to be broken after the path calculation inside a certain domain fails are prevented. Unnecessary operations and control information are reduced. The network stability is further improved.

Description

technical field [0001] The invention belongs to the transmission network subfield of the communication field, and in particular relates to a network centralized control method, system and multi-domain controller. Background technique [0002] In the transmission network of a large operator, due to regional network management (such as backbone network, provincial network, and metropolitan area network) or manufacturer competition, multi-domain networking scenarios inevitably exist. How to implement end-to-end connection control and management in a multi-domain network is a long-term problem faced by operators. [0003] At present, there are mainly two ways to realize end-to-end connection control in multi-domain networks: unified network management and GMPLS E-NNI distributed protocol. The main characteristics and existing problems of the two ways are analyzed as follows. [0004] (1) GMPLS E-NNI distributed control [0005] figure 1 Shown is the flow chart of cross-domain...

AI Technical Summary

Problems solved by technology

[0012] However, because the EMS northbound interface needs to transmit a large number of types of information, including link status, network topology information, alarms, performance, device status (racks, subracks, interface disks, ports), control plane management information, and DCN management , security management information, etc., making the development and maintenance of NMS difficult

[0013] In addition, due to the large amount of information that needs to be reported by the network management interface protocol, the NMS is mainly used to query the network information, and the full report method is adopted. The above reasons make the NMS unable to dynamically obtain the changes of the network topology information in real time, resulting in the NMS, Difficulties in information synchronization between EMS and network elements, which increases the risk of errors in configuration commands issued through the unified network management

Therefore, the current NMS integrated network management can generally only realize the function of viewing cross-domain connections, and rarely realize the functions of establishing, modifying and deleting connections

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