Method and system for managing traffic in a packet network environment
US6781990B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jan 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/7453
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network switch includes a first content addressable memory (CAM), a second CAM, a binding lookup table (BLT), and a packet manager. The BLT extracts two sets of header information from ingressing packets. The first set is applied the first CAM to retrieve a service policy index. The second set of header information is applied to the second CAM to determine whether a connection already exists. If a connection exists, a flow transmission control block (fTCB) pointer is retrieved from the second CAM. Otherwise, if there is no current connection for the packet, a check is made of the service policy index to determine the level of service associated with the packet. Based on the assigned service level, a new fTCB pointer is retrieved, or alternatively, client and server TCB pointers are retrieved. The packet manager then processes the packet according to which TCB pointer is retrieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.