Backup CRF VLAN
US6657951B1 · kind B1 · utility
17Cited by
36References
70Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1999 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Mar 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4604
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A backup CRF VLAN arrangement provides an alternate, redundant path for traffic between undistributed Concentrator Relay Functions (CRFs) located on separate switches interconnected by trunk links of a distributed token ring bridge. The backup CRF virtual local area network (VLAN) arrangement defines a backup network path which may be utilized if a primary active path is not a valid path to a backup network. Notably, the backup network comprises a special type of CRF that is distributed among the switches, but that has only one port active at any given time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.