A service control method and device

Abstract

The invention discloses a service control method and device. The service control module receives a service establishment request through a first interface; and sends a path calculation request to the path calculation module according to service attributes and service status; the path calculation module calculates a service path or a service recovery path ; The service control module sends the calculated service path or service recovery path to the head node of the service path through the second interface, and sends a service path establishment request to the head node, so that the head node establishes a service path or restores the service path through RSVP Service path; when the service path is successfully established or restored, the path management module updates the stored actual service path.

Description

technical field [0001] The invention relates to the field of transmission network communication, in particular to a service control method and device under a stateful Path Computation Element (PCE, Path Computation Element). Background technique [0002] The control plane technology of the transmission communication network is gradually changed from the traffic engineering technology based on Multi-Protocol Label Switching (MPLS-TE, Multi-Protocol Label Switching-Traffic Engineer) and the distribution of Generalized Multi-Protocol Label Switching (GMPLS, Generalized Multi-Protocol Label Switching) It is developing towards the centralized intelligent control technology of Software Defined Network (SDN, Software Defined Network). [0003] In the above control methods, the key technologies still focus on path calculation and service management. In terms of path calculation, PCE is introduced as a separate functional entity, which is specially used for more and more complex ser...

AI Technical Summary

Problems solved by technology

The problem of managing services by managing LSPs is that each service is managed by the first node of the transmission network, and decentralized control brings problems such as the inability to optimize global services and control conflicts. Therefore, the concept of SDN centralized control is gradually proposed. , but the relevant standards of SDN are not yet mature, especially for optical networks, it is unclear what process and cross-representation method to use for related business establishment

[0004] With the introduction of stateful PCE technology, PCE can obtain all the services established by the control plane and master the entire LSP. The draft-ietf-pce-pce-initiated-lsp draft proposes to initiate the establishment of LSP from the PCE, but it is only a simple trigger service. It does not involve the restoration, protection and business control of multi-layer networks that are often used in transmission networks.

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