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Satellite network protection method based on multi-protocol label exchange

A multi-protocol label and satellite technology, applied in data exchange network, data exchange through path configuration, digital transmission system, etc., can solve problems such as QoS service flow protection, achieve the effect of saving bandwidth resources and improving utilization rate

Inactive Publication Date: 2010-08-11
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0009] Technical problem: the purpose of the present invention is to provide a satellite network protection method based on multi-protocol label switching, to solve the problem of QoS service flow protection based on MPLS satellite network failure

Method used

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  • Satellite network protection method based on multi-protocol label exchange
  • Satellite network protection method based on multi-protocol label exchange
  • Satellite network protection method based on multi-protocol label exchange

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Experimental program
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Embodiment Construction

[0040] 1. Architecture

[0041] The QoS protection strategy based on MPLS satellite network is a method that can switch QoS service flow to virtual standby path when the network fails. The virtual standby path does not realize real resource reservation, improves the utilization rate of satellite network bandwidth resources, and can also dynamically change the protection strength of links and nodes. Wherein, the virtual path generator, the virtual path maintenance module, the virtual path update module, and the virtual path revocation module are the main functional components for realizing the method of the present invention, and several specific parts are explained below:

[0042] Service LSP: The packet label forwarding path established by the ingress satellite node and the egress satellite node of the service LSP through the label switching protocol.

[0043] Virtual standby path: a packet label forwarding that has the same ingress port and egress port as the service LSP, doe...

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PUM

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Abstract

A protecting strategy based on MPLS satellite network is a fault protecting mechanism based on the MPLS satellite network, which is used to solve the protecting problems of QoS traffic flow when the satellite network goes wrong based on MPLS. Different from traditional protecting strategy, a virtual standby route in the invention does not realize true resource reservation, thereby advancing utilance of satellite bandwidth resource, also dynamically changing protecting force of the traffic flow, with definite flexibility. In view of characteristics of the satellite, through maintaining the virtual standby route, the virtual route does not fail because of change of satellite network topology. The protecting strategy also solves the problems of failure of traffic LSP generated when switchingthe satellite, through the method of the invention, the QoS traffic flow is transmitted to the virtual standby route when the satellite node or the satellite link fails.

Description

technical field [0001] The present invention is a fault protection mechanism based on MPLS (Multi-Protocol Label Switching, multi-protocol label switching) satellite network, and is mainly used to solve the problem of QoS (Quality of Service, quality of service) business flow protection when the MPLS satellite network fails , which belongs to the field of network survivability technology. Background technique [0002] With the rapid development of IP (Internet Protocol, Internet Protocol) services and the need to support real-time services, research on the quality of service of satellite networks has received extensive attention. MPLS-based satellite network supports traffic engineering, can well adapt to the unique dynamic topology of satellite network, limited on-board processing, delay jitter and other characteristics, can provide real-time application services for users in any location, and can support multiple services at the same time , and has good expansibility, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L1/22H04L12/56H04L29/06H04L12/28H04L45/28H04L45/50
Inventor 王汝传林萍饶元徐小龙郑彦孙力娟张登银
Owner NANJING UNIV OF POSTS & TELECOMM
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