Method and device for binding and mapping control of inter-domain links and intra-domain channels for cross-domain services

Abstract

The invention discloses a method and device for binding and mapping control of inter-domain links and intra-domain channels for cross-domain services, and is mainly designed for the defects existing in the linkage mapping relationship established between existing inter-domain links and intra-domain channels. The control method of the present invention includes: when establishing the first cross-domain service passing through the inter-domain link, selecting a large-grained intra-domain channel according to a preset strategy, and automatically binding its mapping relationship with the inter-domain link. When subsequently establishing cross-domain services passing through the inter-domain link, the routing calculation policy of the control plane is associated with the mapping relationship, and automatically converges the cross-domain services into the intra-domain channels specified in the mapping relationship. The binding mapping relationship lasts until all service connections carried on the inter-domain link are released after being torn down. The method proposed by the invention can correctly control the establishment and aggregation of cross-domain services without adding hardware network equipment.

Description

technical field [0001] The present invention relates to the field of communication networks, in particular to a binding mapping control method and device for cross-domain service inter-domain links and intra-domain channels under the condition of multi-layer multi-domain heterogeneous optical network interconnection. Background technique [0002] In recent years, with the diversification of business requirements and the continuous innovation of optical network technology, multiple transmission methods such as Pasi-Synchronous Digital Hierarchy (PDH), Synchronous Digital Hierarchy (SDH), Wavelength Division Multiplexing (WDM) and Optical Transport Network (OTN) The optical network based on technology has a long-term coexistence development situation. In order to better provide service transmission, the interconnection and intercommunication of various heterogeneous optical networks has become a major development trend of optical networks. Due to the fact that many optical ne...

AI Technical Summary

Problems solved by technology

Conversely, if the subsequent establishment of cross-domain services does not comply with this restriction, when the route calculation result of the new service passes through other intra-domain channels in the domain where the large-grained switching device is located, the problem of failure to establish a new service path or interruption of existing services will occur

Although the ITU-T working group has started to formulate a general mapping procedure (GMP) based on multiple bandwidth granules, there is still no clear solution to this problem in the industry

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