Fujitsu Network Communications, Inc.

Adva Ag Optical Networking

Adva Optical Networking Se

Covaro Networks, Inc.

Wayne Robert Sankey

Paul Anthony Elias

Ross Alexander Jamieson

John Kevin Weeks

Ralf Woehler

Li Mo

Edward T Sullivan

Nimer Yaseen

Kyl Wayne Scott

Carl A DeWilde

Cornelius Fuerst

Osman Koyuncu

Michael Joseph Mezeul

Marlon B Roa-Diaz

Douglas Lane

Ritesh Dhirajlal Sojitra

Kam-Wing Li

Hamid Reza Rezaie

James Buchanan

An apparatus for monitoring a performance of an Ethernet data stream, EDS, said apparatus comprising: an evaluation unit adapted to evaluate sync headers and block type fields of line code vectors of the Ethernet data stream, EDS; and a counter unit adapted to increment at least one performance counter in response to the evaluated sync header and the evaluated block type field of each line code vector of the Ethernet data stream, EDS.

Method and apparatus for monitoring a performance of an Ethernet data stream

A system comprises a frame parser and lookup engine operable to receive an incoming data frame, extract control data from payload data in the data frame, and using the control data to access a memory to fetch a plurality of instructions, a destination and tag management module operable to receive the fetched instructions and execute the instructions to transform the data frame control data, and an assemble module operable to assemble the transformed control data and the payload data.

System and method for line rate frame processing engine using a generic instruction set

A system and method comprise a first buffer having a first capacity and a first threshold level adapted to store data frames having the lowest priority, a second buffer having a second capacity greater than the first capacity and a second threshold level greater than the first threshold level adapted to store data frames having a medium priority, a third buffer having a third capacity greater than the second capacity and a third threshold level greater than the second threshold level adapted to store data frames having the highest priority. The system further includes means for differentiating a data frame as having lowest, medium or highest priority and storing the data frame in the respective first, second or third buffer, and discarding the data frame in response to the first, second or third buffer reaching the respective threshold level.

System and method of defense against denial of service of attacks

A system coupled between at least one input port and at least one output port comprises at least one queue, each queue being identified by a QID and operable to receive and buffer data in at least one service flow from the at least one input port. The system further comprises a predetermined at least one token allocated to each queue, each token indicative whether a predetermined amount of data may be dequeued from a queue and transmitted to the output port. The system comprises at least one group of queues where each queue in the group has a subordinate QID identifying a subordinate queue in the group having a lower priority for reallocating unused tokens. The at least one output port receives at least one output flow comprising the dequeued data from the at least one queue.

System and method for aggregated shaping of multiple prioritized classes of service flows

Provided are a system and method for time-based scheduling in a communications environment. In one example, the method includes assigning at least one token to each of multiple active queues during a predefined period of time. Each token authorizes an amount of data to be dequeued from the queue. The method also includes waiting until the end of the predefined period of time before starting a new round of assigning. At least one of the queues is nominated based on the token assigned to the queue, where the nomination authorizes the dequeuing of the amount of data from the queue. The nomination is sent to a memory system to dequeue the data and send the data to a network uplink.

System and method for time-based scheduling

A method and system for transporting traffic in a packet-switched network segments high priority pass-through traffic from low priority pass-through traffic. The high priority pass-through traffic is transmitted on an egress link preferentially over the low priority pass-through traffic and ingress high priority local traffic. The ingress high priority local traffic is transmitted on the egress link preferentially over the low priority pass-through traffic.

Method and system for transporting traffic in a packet-switched network

In one aspect, the present invention provides a method of communicating across a serial line . In this method, n parallel streams of data are to be received at a destination . In a first embodiment, the n parallel streams of data characterized in that one of streams of data includes a unique characteristic that can be used to distinguish that one from each of the other streams of data. In a second embodiment, each of the n streams of data are in a particular pattern that includes a detectable characteristic. At the destination , the unique characteristic and/or detectable characteristic can be detected to correct space and/or time errors in the streams of data. For example, the destination might be a receiver that includes a serial-to-parallel converter and calibration circuitry

System and method for communications link calibration using a training packet

A multiple time domain serial-to-parallel converter includes a combiner operable to receive a stream of serial data within a first time domain and to accumulate a portion of the serial data into a set of parallel data. A first hold register is coupled to the combiner. The first hold register is configured to operate within the first time domain and operable to load the set of parallel data in response to a first load signal based on the first time domain. A second hold register is coupled to the first hold register. The second hold register is configured to operate within a second time domain and operable to load the set of parallel data from the first hold register in response to a second load signal based on the second time domain.

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Dallas, TX, United States of America

Wayne Robert Sankey