The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 06, 2019
Filed:
Oct. 31, 2017
Tellabs Operations, Inc., Naperville, IL (US);
Chakravarthi S. Chigurapati, Palo Alto, CA (US);
Pawan Uberoy, San Jose, CA (US);
Somnath Mani, Santa Clara, CA (US);
Praveen Madhav, San Jose, CA (US);
Duncan Stuart Ritchie, Bowen Island, CA;
Sebastian Sapa, Vancouver, CA;
Tellabs Operations Inc., Naperville, IL (US);
Abstract
A method and/or network system is able to perform an in-service software upgrade ('ISSU') using virtualization technology while ongoing network service is maintained. After receipt of an upgrade signal such as a command of software upgrade, a new or second virtual machine ('VM') is created in response to the upgrade signal. After downloading the new version of program to the second VM while maintaining the first version of program running on the first VM, the process for providing network management begins to migrate from the first version of program to the new version of program. The process simultaneously facilitates ISSU for a data-path module such as a line card to convert from the previous version of software to the new version of the software.