Switch fabrics logical synchronization utilizing propagation lockdown
US7283547B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2000 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Dec 14, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/3072
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A switch includes a port card for receiving packets from and sending packets to a network. The switch includes a fabric connected to the port card for switching the packets. The fabric has memory controllers which perform logical functions and in which portions of the packets are stored. The fabric has stages for switching the portions of the packets. The fabric has a mechanism for propagated lockdown of each stage wherein each stage is idle a correct number of cycles and each memory controller performs the same logical functions the corresponding same logical cycles. A method for switching packets includes the steps of introducing idles a correct number of cycles in each stage of memory controllers in fabrics of a switch to maintain the fabrics in logical synchronization. Then there is the step performing with each memory controller in the fabrics same logical functions at corresponding same logical cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.