Method and apparatus for the secure switching of a packet within a communications network
US6289015A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1998 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Sep 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/351
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A switch for switching a packet within a communications network includes a switching core that services a number of ports. The switch also includes address matching logic, coupled to the switching core, that implements an address lookup scheme according to which the switching core may switch to packet received at the switch. Override logic, that is also coupled to the switching core, determines with a packet received at any one of the number of ports serviced by the switching core is received at a predetermined port. This may be done by snooping a bus within the switch that provides an indication of an active port. If the packet was not received at the predetermined port, the override logic override the address matching logic to cause the switching core to route the packet exclusively to the first port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.