Alcatel Lucent

Robert John Johnson

Tim Kuhl

Andrew Dolganow

Jason T Sterne

James Michael Schriel

Richard Grieve

Larry Friesen

David James Wilson

Aaron Maxwell MacDonald

William McConnochie

Gordon Hanes

Charlie Sabry

Bin Du

A network statistics processing device comprises a port processing unit for determining an update from a forward statistic metric carried by an input PDU, an arbitration unit for placing the updates into a scheduled stream of updates, and a memory unit for storing statistic totals relating to the network operating parameters. The port processing unit also processes the statistic results retrieved from the memory into reverse statistic metrics that are inserted into an output PDU. A statistics monitoring and processing unit enables performance of high level statistical processing on selected updates and on the results. A method of generating and maintaining statistic totals on a plurality of network operating parameters is also described. This arrangement reduces backplane traffic, provides the statistical ports with intelligence and so as to accommodate plural transmission protocols, and provides greater visibility into transactions that can occur on a network to provide debugging, flow and/or load information.

Network statistics processing device

A method for incorporating a queuing device as a lossless processing stage in a network device in a communications network, comprising: monitoring a depth of a queue in the queuing device, the queue for receiving packets from an upstream device within the network device, the queuing device acting as a discard point by discarding packets when the queue is full; and, if the depth passes a predetermined threshold, sending a message to the upstream device to reduce a rate at which packets are sent to the queuing device to prevent the queue from filling and thereby preventing packet discarding and loss by the queuing device.

Method and system for using a queuing device as a lossless stage in a network device in a communications network

A method of detecting missing fragments and idle links in a link bundle for a multilink protocol, and devices provisioned with program instructions for performing the method, employs a plurality of masks to track the links in the bundle that are active. Idle links are excluded from a determination about whether buffer cleanup should be run in order to reduce unnecessary buffer usage caused by orphaned fragments.

Method of reducing buffer usage by detecting missing fragments and idle links for multilink protocols and devices incorporating same

A method of collecting consistent flow statistics through multiple congestion points within a multi-service switch/router is enabled by computing a payload length of each traffic unit received from a fabric of the switch/router. A PHY-level header containing the payload length, a class of service and a service ID is appended to the switch-internal encapsulated payload. Information associated with the PHY-level header is used at physical level congestion points to collect consistent flow statistics.

Method of collecting consistent flow statistics through multiple congestion points within a multi-service switch/router and multi-service switches/routers provisioned with same

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Ottawa, Canada

Robert John Johnson