Multi-priority cross-domain resource reservation integration service guarantee method

Abstract

The invention provides a multi-priority cross-domain resource reservation integration service guarantee method. The method comprises the following flows: S1, centralized management architecture is configured; S2, a transmission domain broadcasts routing information to a regional management service node S-QoSM, and S-QoSM collects the routing information and reports to a master control management service node M-QoSM; S3: the M-QoSM computes a global routing view; S4, all terminal users submit a QoS requirement to the M-QoSM, and the M-QoSM collects the QoS request of the terminal user; S5, theM-QoSM queries a location of an access router; S6, the M-QoSM computes an inter-domain transmission path; S7, the S-QoSM computes an intra-domain transmission path; and S8, a boundary router returns areservation result to the S-QoSM, the S-QoSM returns the reservation result to the M-QoSM; the M-QoSM distributes the global unique stream identifier label and issues along with the resource reservation. Through the method provided by the invention, the optimized and the boundary-to-boundary global stream label path is selected according to a QoS requirement of the traffic, the use of the networkresource is optimized through explicit routing, and the end-to-end quality of service of the network is obviously improved.

Description

technical field [0001] The invention relates to resource reservation-oriented integration service guarantee technology in the field of computer networks, in particular to a multi-priority cross-domain resource reservation integration service guarantee method. Background technique [0002] Nowadays, Internet applications are in full swing, IP broadband services are developing rapidly, and network traffic is constantly expanding. Traffic engineering technology is used in the backbone network to balance loads, maximize resource utilization, and reduce congestion to ensure the IP service quality of application services ( Quality of Service, referred to as QoS) requirements. [0003] Multi-Protocol Label Switching (MPLS) is a new generation IP high-speed backbone network switching standard proposed by the Internet Engineering Task Force (IETF). MPLS uses a 20-bit label (label) for data forwarding. When a packet enters the network, a fixed-length short label is assigned to it, a...

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Problems solved by technology

[0007] Aiming at technical problems such as the low efficiency of data forwarding in the existing MPLS technology and the inability to guarantee the service quality of network key business transmission, the present invention provides a multi-priority cross-domain resource reservation integration service guarantee method, by combining connection-oriented LSP and Constrained routing mechanism, realizes the selection of optimized, boundary-to-boundary global flow label paths according to the QoS requirements of traffic, and can also optimize the use of network resources through explicit routing, thus significantly improving the end-to-end QoS of the network

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