IP backbone network reliability and performance analysis method and apparatus
US6754843B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2000 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Jun 22, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/5009
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention provides a tool for reliability evaluation and performance analysis of an IP backbone network by using the network packet loss ratio as the main measurement. A queuing model and algorithm is presented for calculating packet loss at congested interfaces or links. A reliability model is presented for considering network hardware component failures such as router failures, ATM switch failures, and physical link failures. Based on the measurement and models presented, a network reliability and performance (NetRAP) apparatus calculates IP network reliability and performance measurements. The NetRAP apparatus uses the network topology, a traffic matrix, and the reliability parameters of a network as inputs and calculates the network packet loss ratio and sigma score, and provides a list of heavily congested links under non-failure or different single failure conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.