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:
Jul. 30, 2013
Filed:
Mar. 19, 2010
Kumaran Narayanan, San Ramon, CA (US);
Siva Madasamy, San Jose, CA (US);
Aparna Adhav, Fremont, CA (US);
Saurabh Agarwal, Fremont, CA (US);
Kalash Nainwal, Bangalore, IN;
Kumaran Narayanan, San Ramon, CA (US);
Siva Madasamy, San Jose, CA (US);
Aparna Adhav, Fremont, CA (US);
Saurabh Agarwal, Fremont, CA (US);
Kalash Nainwal, Bangalore, IN;
Juniper Networks, Inc., Sunnyvale, CA (US);
Abstract
Rolling software upgrades may be employed for a network device in a modular chassis and/or virtual chassis. The network device may include memory devices to store a software upgrade package and a group of instructions, and a processor. The processors may install the software upgrade package on a backup routing engine; determine subsets of multiple line cards on which to perform a software upgrade, where ports in each of the multiple line cards are part of a link aggregation group (LAG); initiate a reboot process for each of the subsets of multiple line cards, in sequence, where the reboot process for each of the line cards results in a software upgrade without deactivating any LAG. The processors may also switch the backup routing engine and a master routing engine to create a new master routing engine and a new backup routing engine, and install the upgrade package on the new backup routing engine.