Method and apparatus for routing packets in networks having connection-oriented subnetworks
US5633866A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1996 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Aug 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5636
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for routing packets in a network environment having a connection-oriented subnetwork, a plurality of routers coupled to said connection-oriented subnetwork, and a plurality of established virtual circuits. A packet is received by a router for forwarding toward a packet destination. A best existing virtual circuit across said connection-oriented subnetwork is identified from said plurality of established virtual circuits. The best existing virtual circuit is analyzed to determine whether it is both feasible and efficient for forwarding the packet toward the packet destination. If the best existing virtual circuit is both feasible and efficient, then the packet is forwarded using the best existing virtual circuit. If the best existing virtual circuit is either not feasible or inefficient, then a new virtual circuit is established to an optimal next hop router and the packet is forwarded using the new virtual circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.