Abstract:

The availability assessment model of transport network was studied. An approach of running availability for assessing the running quality of transport network at runtime was proposed. By considering relationship of disabled circuit set and corpora circuit set, a runtime-oriented metric based on circuit services for running availability, service outage index (SOI), was defined. And through SOI, the quality of running status at assessing time is transformed into a number with the range of 0 to 100. And discrete SOI values of different time points compose a running availability curve. The network running status could be observed through this curve easily. Application results in a real network environment demonstrate the assessment model to be promising.

Key words: transport network, availability, running availability, service outage index