Hitless method and apparatus for upgrading a network
US6754175B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2000 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Apr 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0816
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention provides for a system and method for upgrading an ATM network to a new release of a vendor's ATM platform, or for converting an ATM network to a different vendor's ATM platform, preferably without experiencing any service disruptions. The system and method upgrade involves first reorganizing an existing redundant-based ATM network by splitting the links, for example, fiber links, within the existing redundant-based ATM network among two parallel networks, Network A and Network B. Network A can be changed at this stage. Then the circuits from Network B are moved to Network A by using Bridge and Roll techniques. This hitless procedure allows for the migration of the customer traffic from Network B to Network A without customer traffic disruptions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.