Stateful load balancing in a stateless network
US10277506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2014 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/125
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A packet routing method for directing packets of a session in an IP network causes an intermediate node to obtain a lead packet of a plurality of packets in a given session. The intermediate node has an electronic interface in communication with the IP network and obtains the lead packet through that same interface. The method maintains, in a routing database, state information relating to a plurality of sessions in the IP network. Each session includes a single stateful session path formed by an ordered plurality of nodes in the IP network, and the state information includes information about the ordered plurality of nodes in the sessions. The method further accesses the routing database to determine the state of a plurality of sessions, and forms a stateful given path for packets of the given session across the IP network as a function of the state information in the routing database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.