公开(公告)号：US09830143B2

公开(公告)日：2017-11-28

申请号：US14290139

申请日：2014-05-29

Applicant: Coriant Operations, Inc.

Inventor： Chakravarthi S. Chigurapati ,  Pawan Uberoy ,  Somnath Mani ,  Praveen Madhav ,  Duncan Stuart Ritchie ,  Sebastian Sapa

IPC: G06F9/45 ,  G06F9/445 ,  H04L12/24 ,  G06F9/455 ,  H04W24/02

CPC classification number: G06F8/65 ,  G06F8/656 ,  G06F9/45533 ,  H04L41/082 ,  H04W24/02

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.

公开(公告)号：US20180052678A1

公开(公告)日：2018-02-22

申请号：US15799825

申请日：2017-10-31

Applicant: Coriant Operations, Inc.

Inventor： Chakravarthi S. Chigurapati ,  Pawan Uberoy ,  Somnath Mani ,  Praveen Madhav ,  Duncan Stuart Ritchie ,  Sebastian Sapa

IPC: G06F9/445 ,  H04W24/02 ,  G06F9/455 ,  H04L12/24

CPC classification number: G06F8/65 ,  G06F8/656 ,  G06F9/45533 ,  H04L41/082 ,  H04W24/02

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.