Assurance effectiveness-based method for evaluating survivability of optical transport network

Abstract

The invention discloses an assurance effectiveness-based method for evaluating the survivability of an optical transport network. The method comprises two integrated measuring indicators: an assurance failure index and an assurance influence index, wherein the assurance failure index is an indicator for measuring the assurance effectiveness of the optical transport network from the perspective of business loss, evaluation of the influence degree of the network assurance effectiveness after business interruption is evaluation of a specific value of the sum of bandwidths of network loss business after a node or link failure in the network to the sum of the bandwidths of the business transmitted in the whole network, and the assurance effectiveness of the network is measured through evaluating the loss of the volume of the business transmitted in the network; the assurance influence index is used for evaluating the influence degree of the business on the equivalent assurance capacity for average information provided after network configuration business, the assurance effectiveness of the network is measured mainly through evaluating the potential influence degree of the failure on the network and the equivalent assurance capacity for the information between two points in the network is firstly defined. The evaluation is comprehensive and accurate and the evaluation result is more specific in meaning.

Description

Technical field: [0001] The invention relates to a method for evaluating the invulnerability of an optical transport network, in particular to a method for evaluating the invulnerability of an optical transport network based on guarantee effectiveness. Background technique: [0002] The service status transmitted on the optical transport network can be divided into a normal working state set, an affected state set, and an interrupted state set. The service is provided normally, the state of the service is called the normal working state, and the corresponding service is called the normal working service; the affected state is that the links and nodes passed by the service transmitted on the optical transmission network are destroyed, resulting in the normal transmission of the service, due to The anti-destroy strategy is adopted, so that the service is transmitted to the destination node through other routes. The state of the service is called the affected state, and the cor...

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Problems solved by technology

[0003] The current research on the invulnerability of optical transport networks has the following problems: (1) The defined indicators generally consider the characteristics of the network topology, and seldom consider the characteristics of the bearer service; (2) The data sources of the network invulnerability evaluation methods are quite Difficult, some documents use expert scoring, hierarchical analysis and other methods, which bring subjective influence to network evaluation; (3) When evaluating, more consideration is the actual impact of faults on the network, reflecting the potential impact of faults on the network less indicators

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