Slt Logic, LLC

Terago Communications, Inc.

Other

Scott A Sarkinen

Hemant Vrajlal Trivedi

Micah T Somers

Scott Allen Davidson

Joseph A Halfen

Gregg T Sarkinen

Scott A Davidson

Rodolfo A Santiago

Jeremy B Paatela

Kevin L Stevens

Neil T Amundsen

Robert W Sigel

Steven C Mickelson

A multi-protocol, multi-stage, real-time frame classifier is disclosed. A preliminary multi-protocol frame composition analyzer is provided for performing preliminary multi-protocol frame classification for incoming frames. A parsing instruction generator is provided for processing at least the incoming frame and the preliminary multi-protocol frame classification to provide parsing instructions. A multi-stage parsing engine provides multi-stage parsing of the incoming frame according to the parsing instructions to generate search results presenting information about the incoming frame. An advanced level of data extraction is provided across various frame protocols without imposing a performance penalty. Longest prefix match searches and/or direct lookup searches are supported. Moreover, conditional extractions, instruction branching, multi-stage processing are all performed in real time.

Method and apparatus for providing multi-protocol, multi-stage, real-time frame classification

A system and method for policing individual flows and subflows of a data stream. Data traffic streams are classified into separate traffic flows, which in turn can be further classified into subflows, thereby providing for different priority levels of subsets of the flow. The subflows may be still further classified into additional subflows, creating a hierarchical, layered prioritization that can be metered at each vertical and horizontal level of the hierarchy. A packet flow rate of each of the subflows is compared to a predefined rate limit to allow subflows of a flow to have different priorities therebetween.

System and method for hierarchical policing of flows and subflows of a data stream

A system and method for facilitating packet transformation of multi-protocol, multi-flow, streaming data. Packet portions subject to change are temporarily stored, and acted upon through processing of protocol-dependent instructions, resulting in a protocol-dependent modification of the temporarily stored packet information. Validity tags are associated with different segments of the temporarily-stored packet, where the state of each tag determines whether its corresponding packet segment will form part of the resulting modified packet. Only those packet segments identified as being part of the resulting modified packet are reassembled prior to dispatch of the packet.

System and method for providing transformation of multi-protocol packets in a data stream

The present invention provides a multi-service queuing method and apparatus that provides exhaustive arbitration, load balancing, and support for rapid port failover. Routers and switches according to the present invention can instantaneously direct the flow of traffic to another port should there be a failure on a link, efficiently handle multicast traffic and provide multiple service classes. The fabric interface interfaces the switch fabric with the ingress and egress functions provided at a network node and provides virtual input and output queuing with backpressure feedback, redundancy for high availability applications, and packet segmentation and reassembly into variable length cells. The user configures fixed and variable-length cells. Virtual input and output queues are coupled to a switch fabric. Statistics regarding the virtual input and output queues are collected and packet queuing for the virtual input and output queues is controlled using the collected statistic to provide congestion control for the virtual input and output queues and the switch fabric.

Multi-service queuing method and apparatus that provides exhaustive arbitration, load balancing, and support for rapid port failover

A system and method for scheduling data utilizes a number of queues for receiving data. A programmable criteria table comprises a number of entries each associated with one of the queues. The entries of the criteria table comprise programmable traffic parameters selected to associate the queues with particular traffic characteristics governing a flow of data through the queues. A programmable mapping table maps each of the queues to one of the criteria table entries. The criteria table is programmable independently from the mapping table. A scheduling period timer produces epoch time signals that define scheduling time periods. The scheduling of queues changes between scheduling time periods in accordance with the traffic parameters associated with the queues. The scheduling time period is dynamically programmable. The traffic parameters are dynamically programmable to alter a scheduling prioritization of the queues.

Programmable multi-service queue scheduler

A system and method for programming a programmable circuit. A graphical interface is provided to allow a user to graphically define at least one type of input data unit that is expected to be received at the programmable circuit. A visual representation of the input data format corresponding to the defined type of input data unit is presented to the user. The user graphically manipulates the visual representation of the input data format to graphically transform the input data format to a visual representation of a desired output data format of output data units to be output from the programmable circuit. Program code is automatically generated for directing the programmable circuit at run-time deployment to transform actual input data units of the defined type of input data units to actual output data units having the desired output data format in a manner corresponding to the graphical transformation of the input data format to the desired output data format.

Method and apparatus for graphically programming a programmable circuit

Ventilation grill for attachment to an equipment enclosure door or panel

Wire management device

Cable guide device for guiding cables over multiple paths

Growing community of inventors

Mounds View, MN, United States of America

Scott A Sarkinen