Regeneration of a packet CRC
US8352829B1 · kind B1 · utility
5Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/093
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Techniques relate to the regeneration of a cyclical redundancy check (CRC) value of a data packet in a manner that avoids a complete CRC recomputation based on the entire packet after only a portion of a packet has been modified. When modifying and forwarding a packet, a network device identifies only the changed portions of a packet and computes an updated CRC for the packet based on the original CRC, the modified portions, and the length from the modified field to end of packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.