International Business Machines Corporation

Saritha Yeddula

Vishal Shukla

Ashish Kapur

Venkata Siva N Amulothu

Kavita Gadde

Nitin Kumar J Huralikuppi

A method and associated systems for using a software-defined network (SDN) controller to automatically test cloud performance. A bandwidth measuring and optimizing system associated with the SDN controller detects a triggering condition and, in response, directs a network-management tool to measure a bandwidth of a segment of a physical infrastructure of a network and directs the SDN controller to provision a virtual machine that then measures a bandwidth of a corresponding segment of virtual infrastructure that is overlaid upon the physical segment. In some embodiments, these two tests are synchronized so as to concurrently measure physical and virtual bandwidths while the same test data passes through the virtual infrastructure segment. The measured bandwidth of the virtual segment is then compared to the measured bandwidth of the physical segment in order to determine an efficiency of the virtual network.

Measuring virtual infrastructure performance as a function of physical infrastructure performance

As disclosed herein a method includes a software defined networking controller identifying an element managed by the controller on which to perform a software version maintenance operation, de-activating the identified element in a software defined network (SDN), ensuring that there is an active backup for the element in the SDN while the identified element is de-activated, initiating the software version maintenance operation on the de-activated identified element, and in response to completion of the software version maintenance operation, re-activating the de-activated identified element in the SDN. A computer system, and a computer program product corresponding to the method are also disclosed herein.

Software version maintenance in a software defined network

Using an SDN controller for contemporaneous measurement of physical and virtualized environments

Using an SDN controller for synchronized performance measurement of virtualized environments

Using an SDN controller to automatically test cloud performance

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Saritha Yeddula