Abstract: One embodiment of the present invention provides a system that facilitates scheduling packets in a multi-service integrated switch fabric wherein packet services are attached directly to the switch fabric. During operation, the system receives a packet at the switch fabric. Upon receiving the packet, the system uses pre-defined rules to identify packet services to perform operations on the packet. The system then attaches a tag to the packet, which identifies the packet services to be performed on the packet. The system then schedules the packet on the switch fabric. During the scheduling process, the system considers the packet services identified by the tag and the occupancies of queues associated with the identified packet services when scheduling the packet in an attempt to optimize network throughput.

Abstract: A system and methods for managing a large number of computing devices. A management station includes a talker for sending management commands and a listener for receiving command acknowledgements and/or responses. Commands are issued to multicast addresses, for delivery to multiple devices without having to originate multiple messages at the management station. Each command includes an identifier (e.g., sequence number) to distinguish it from other commands and allow the station to determine which commands a device has not acknowledged. A managed device acknowledges a command by transmitting the identifier to the management station. A device may acknowledge every command or may periodically or occasionally acknowledge the most recent command it received and/or applied. A managed device may not be continuously coupled to the management station (e.g., it may be offline or turned off). When reconnected, missed commands may be sent to the device (e.g., via unicast).

Abstract: An event correlation system for network management has computer code for at least one model of a process to be run on a node of a network, where said process is intended to be run on a different node of the network than the model. The correlation system also has code for an alarm monitor comparing the apparent behavior of the model to actual events generated by the process and generating alarm messages when the actual events of the process do not match expected events from the model. It also has code for an event correlation utility; and means for communicating alarms from the alarm monitor to the event correlation utility.