Network device for supporting multiple redundancy schemes
US6332198A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Jun 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0863
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and apparatus for supporting multiple redundancy schemes in a single network device. In one network device, various redundancy schemes are supported including 1:1, 1+1, 1:N, no redundancy or a combination of redundancy schemes. In addition, the redundancy scheme or schemes for physical network device cards (i.e., universal port cards) or ports may be different from the redundancy scheme or schemes for forwarding network device cards. For example, a network manager may want to provide 1:1 or 1+1 redundancy for all universal port cards and/or ports but only 1:N redundancy for each N group of forwarding cards. As another example, the network manager may provide certain customers with 1:1 redundancy on both universal port cards (or ports) and forwarding cards to ensure that customer's network availability while providing other customers, with lower availability requirements, with various other redundancy scheme combinations, for example, 1:1, 1+1, 1:N or no redundancy for port cards or ports and 1:N or no redundancy for forwarding cards. The present invention allows customers having different availability/redundancy needs to be serviced by same n…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.