Method and apparatus for message routing, including a content addressable memory
US6430190B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | May 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/3027
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A router coupled to a plurality of networks receives a data packet from a first one of the networks and routes the data packet to a second one of the networks. The data packet includes a first portion having a destination network address. The router receives a first portion of the data packet, and the first portion of the data packet includes a destination network address. The destination network address of the data packet is asserted to a content addressable memory (“CAM”), where the CAM has stored routing information, while the first packet is not yet fully received from the first network. The CAM identifies one of the networks coupled to the router, in response to the destination network address being in the CAM, while the router is still receiving a remaining portion of the data packet. After identification of the destination network the data packet is routed to the destination network. However, in response to the destination network address not being in the CAM, the data packet is received completely, and a database searched for the destination network address, and the data packet is forwarded after the destination address is found in the database. The destination …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.