System and method for sending and receiving frames between a public device and a private device
US6401128B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Aug 6, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/645
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for sending frames between a public device and a private device comprise a phantom device mapping, an address translation, a frame payload translation, and a CRC regeneration. The system and method assign a phantom AL_PA for the public device and establishes a phantom device mapping between the phantom AL_PA and the public device's Port_ID. With the phantom device mapping, the present invention directs all communication between the public device and the private loop device as if the communication were between a phantom device and the private device. Specifically, the system and method comprise a public-to-private address translation in one direction and a private-to-public address translation in the other direction. During the public-to-private address translation process, the source address of the frame is converted to a phantom AL_PA. The public-to-private address translation uses a Port_ID to phantom AL_PA mapping table and finds an entry where the Port_ID matches the source address. The public-to-private address translation replaces the source address of the frame with the phantom AL_PA of the matched entry, and the destination address with the AL_PA only of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.