Technique for fast network device configuration upgrade and reload

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United States of America Patent

PATENT NO 9792106
SERIAL NO

14450935

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Abstract

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A network device includes a control processor and a network processor unit (NPU) to forward network packets between network ports of the device. The processor downloads a new operating system (OS). The processor performs a fast upgrade to the new OS using a fast upgrade/reload technique to isolate the processor from interruptions and, without rebooting the processor, start the new OS in place of an existing OS. The fast upgrade/reload also includes delaying a reset of the NPU so that the NPU continues to route the network packets based on existing forwarding information. The fast upgrade/reload includes resetting the NPU only when the new OS first accesses the NPU, and then programming the reset NPU.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CISCO TECHNOLOGY, INC.SAN JOSE, CA14366

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Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
* 2009/0158,266 DEPLOYMENT TOOL FOR INCREASING EFFICIENCY IN A PRODUCTION COMPUTER SYSTEM 2 2008
* 2010/0250,908 Concurrent Patching of Operating Systems 15 2010
 
Other [Check patent profile for assignment information] (1)
* 2003/0033,406 Apparatus for and a method of network load testing 44 2002
 
WSOU INVESTMENTS, LLC (1)
* 2013/0064,102 VIRTUAL CHASSIS SYSTEM CONTROL PROTOCOLS 15 2012
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
* 2008/0019,383 Telecommunications switching 5 2006
 
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP (1)
* 2007/0115,967 Dynamic discovery of ISO layer-2 topology 24 2006
 
CISCO TECHNOLOGY, INC. (2)
* 2007/0159,987 Seamless spanning tree restart of a single supervisor 7 2006
8190720 Performing an in-service software reload on a network device 9 2006
 
JUNIPER NETWORKS, INC. (2)
* 8799419 Configuration update on virtual control plane 5 2010
* 8799422 In-service configuration upgrade using virtual machine instances 9 2011
 
SPL INNOTECH PTE LTD. (1)
* 2005/0160,417 System, method and apparatus for multimedia display 2 2005
 
GOOGLE TECHNOLOGY HOLDINGS LLC (1)
* 2007/0162,730 Method for delaying and executing system administration operations in unattended mode 1 2001
* Cited By Examiner

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