International Business Machines Corporation

Robert Cowart

Renato John Recio

Bruce H Ratcliff

Daniel Joseph Martin

David Hadas

Ray Jenkins

A physical host executes a virtual machine monitor (VMM) that instantiates a source virtual machine (VM). In response to the VMM receiving from the source VM a packet specifying a first destination address of a destination VM and a second destination address of a default gateway, the VMM determines whether the packet can be communicated to the destination VM without the packet being routed by the default gateway. In response to the VMM determining that the packet can be communicated to the destination VM without the packet being routed by the default gateway, the VMM forwards the packet to the destination VM such that the packet bypasses routing by the default gateway.

Hypervisor routing between networks in a virtual networking environment

The present invention provides methods and systems for performing preliminary cause-based classification of events in a computer or networked computer system. Methods are provided in which, based on an event message, cause-based preliminary classification of an associated event is performed. The result of the preliminary classification is used to facilitate subsequent cause-based analysis, such as root cause analysis, relating to the event. Methods are provided in which preliminary classification is performed using a database including a catalog associating event messages with appropriate preliminary classifications of events associated with the event messages.

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Atlanta, GA, United States of America

Robert Cowart