Abstract: Mechanisms for determining a network topology are disclosed. Client computer information messages are received from a plurality of client computers. The client computer information messages include a network identifier that identifies a network address of a respective client computer. A first link table that identifies ports of a first switch device and corresponding network identifiers of at least some client computers is received from the first switch device. A second link table that identifies ports of a second switch device and corresponding network identifiers of other client computers is received from the second switch device. A nodal tree structure is generated that identifies the plurality of client computers, the communication links between the plurality of client computers, the first switch device, and the second switch device based on the client computer information messages, the first link table, and the second link table.

Abstract: Mechanisms for determining a network topology are disclosed. Client computer information messages are received from a plurality of client computers. The client computer information messages include a network identifier that identifies a network address of a respective client computer. A first link table that identifies ports of a first switch device and corresponding network identifiers of at least some client computers is received from the first switch device. A second link table that identifies ports of a second switch device and corresponding network identifiers of other client computers is received from the second switch device. A nodal tree structure is generated that identifies the plurality of client computers, the communication links between the plurality of client computers, the first switch device, and the second switch device based on the client computer information messages, the first link table, and the second link table.

Abstract: A computer customizes additional content provided with video advertisements in a video segment, by identifying a video advertisement included in a segment of video content streaming to a client device, determining a parameter of the client device or of a user of the client device, and selecting customized advertising content from multiple predetermined advertising choices, based on the parameter and on an identity of the video advertisement. An interactive ad object may be provided at a time determined by timing of the video ad in a streaming video session. The interactive ad object may include a link to additional information related to the video ad. The link may be customized for a particular client device and video session, for example by linking to the customized advertising content at a remote server.