Live migration of massive numbers of network connections, including long lived connections
US10015266B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2014 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Feb 13, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/148
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A massive number of long lived connections is migrated between a source and a destination computer. Connection state information concerning each request being processed on each connection is transferred from the source to the destination computer. The source continues to respond to requests on a given connection while transferring corresponding state information. Once state information for a specific connection has been transferred, the connection is switched from the source to the destination. Connections are kept active during the shifting. While shifting traffic on a specific connection, two versions of the connection can be open simultaneously, one to the source and the other to the destination. Traffic on the connection is routed to the source computer until the shift has been completed, after which the connection on the source computer is closed, and traffic is routed to the destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.