ATM Network with a filtering table for securing communication
US6172991A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5669
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a communication system, a source node responds to a packet by transmitting a signaling message to an ATM network, containing source and destination network-layer addresses and source and destination transport-layer addresses of the packet. The ATM network includes a filtering table having a plurality of entries each storing source and destination network-layer addresses and source and destination transport-layer addresses. Upon receipt of the signaling message, the ATM network returns a grant indication message to the source node if contents of the received signaling message are identical to contents of one of the entries of the filtering table, and establishes a virtual connection between the source node and a destination node. The source node is responsive to the grant indication message for storing the network-layer addresses and transport-layer addresses of the received packet into a virtual connection management table, segments a subsequently received packet into cells and transmits the cells over the virtual connection if the packet contains addresses identical to the addresses stored in the virtual connection management table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.