Patent · US Active

Preserving stateful network connections between virtual machines

US10250696B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Jakob C. Lang · Altdorf, DE
Angel Nunez Mencias · Stuttgart, DE
Thomas Pohl · Holzgerlingen, DE
Martin Troester · Eppelheim, DE

Key dates

Filing date	Jul 26, 2016
Grant date	Apr 2, 2019
Priority date	—
Expiry date	Oct 29, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04L61/5014
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Stateful network connections between a first virtual machine and at least a second virtual machine are preserved during a suspend and resume cycle. The virtual machines are interconnected by a network. A control instance is provided to manage a routing of network traffic of the virtual machines to the network. In case of a suspend operation, the control instance tracks network addresses of each virtual machine, whereas in case of a resume operation, the control instance sets up a router for each virtual machine and requests new network addresses for each router. The control instance configures a network address translation on the router assigned to each virtual machine to map the new network addresses to the network addresses used before suspending the virtual machines.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.