Juniper Networks, Inc.

Microsoft Technology Licensing, LLC

Fungible, Inc.

Diva Systems Corporation

Sedna Patent Serivces, LLC

Philip A Thomas

Pradeep S Sindhu

Jean-Marc Frailong

Anurag Agrawal

Srihari Raju Vegesna

Deepak Goel

Wael Noureddine

Ayaskant Pani

David James Ofelt

Christopher Goode

Murat Arabaci

Donald F Gordon

Ramesh Panwar

Sarin Thomas

Narendra Jayawant Gathoo

Gopesh Goyal

Robert William Bowdidge

Mark D Conover

Brooks Cole

Gunes Aybay

Theodore John Schmidt

Christian Malouin

Massimiliano Salsi

Sunil Mekad

Satish Deo

Marianna Pepe

Rajan Goyal

Anjan Venkatramani

Roberto Marcoccia

Jaspal Kohli

Daniel Illowsky

Chi-Chung Kenny Chen

Chang-Hong Wu

Jaya Bandyopadhyay

Kireeti Kompella

Satyanarayana Lakshmipathi Billa

Gary S Goldman

Paul Kim

Bo Zhang

Fuguang Shi

Harshad B Agashe

Yixing Ruan

Naveen K Jain

Edward David Beckman

Eric Scot Swartzendruber

Arghajit Basu

Sathish M Shenoy

F Ray McDevitt

David Rimbey

David Johnson

Wing Poon

Ashish Khicha

Sathish Shenoy

A network device includes one or more dies, wherein each die, of the one or more dies includes one or more packet forwarding components and a switch fabric component. The switch fabric component of a particular die, of the one or more dies, may be connected to the one or more forwarding components of the particular die, and may be configured to provide a switching plane for the one or more packet forwarding components of the particular die. A first die, of the one or more dies, may be connected to the one or more packet forwarding components of a second die of the one or more dies, and may be configured to provide a switching plane for the one or more packet forwarding components of the second die. The switch fabric component may be included in each of the one or more dies and the network device does not include a standalone switch fabric component.

Scalable multi-plane fabric-less connectivity for packet forwarding engine

A fabric control protocol (FCP) and packet forwarding mechanisms are described that maximize utilization of bandwidth within massive, large-scale data centers having multi-stage data center switch fabric topologies, such as topologies that include a third switching layer formed by super spine switches. Automatic generation of data plane forwarding information referred to as FCP path information enumerates, for each data processing unit (DPU), the available FCP paths. The FCP path information may be based on unique combinations of peak points of the switch fabric for a given DPU with FCP colors assigned to network links that are used to multi-home the DPU to the switch fabric.

Fabric control protocol for large-scale multi-stage data center networks

A fabric control protocol is described for use within a data center in which a switch fabric provides full mesh interconnectivity such that any of the servers may communicate packet data for a given packet flow to any other of the servers using any of a number of parallel data paths within the data center switch fabric. The fabric control protocol enables spraying of individual packets for a given packet flow across some or all of the multiple parallel data paths in the data center switch fabric and, optionally, reordering of the packets for delivery to the destination. The fabric control protocol may provide end-to-end bandwidth scaling and flow fairness within a single tunnel based on endpoint-controlled requests and grants for flows. In some examples, the fabric control protocol packet structure is carried over an underlying protocol, such as the User Datagram Protocol (UDP).

Fabric control protocol for data center networks with packet spraying over multiple alternate data paths

A network system for a data center is described in which an access node sprays a data flow of packets over a logical tunnel to another access node. In one example, a method comprises establishing, by a plurality of access nodes, a logical tunnel over a plurality of data paths across a switch fabric between a source access node and a destination access node included within the plurality of access nodes, wherein the source access node is coupled to a source network device; and spraying, by the source access node, a data flow of packets over the logical tunnel to the destination access node, wherein the source access node receives the data flow of packets from the source network device, and wherein spraying the data flow of packets includes directing each of the packets within the data flow to a least loaded data path.

Data center network with packet spraying

A network system for a data center. In one example, a method comprises establishing, by a plurality of access nodes, a logical tunnel over a plurality of data paths across a switch fabric between a source access node and a destination access node included within the plurality of access nodes, wherein the source access node is coupled to a source network device; and spraying, by the source access node, a data flow of packets over the logical tunnel to the destination access node, wherein the source access node receives the data flow of packets from the source network device, and wherein spraying the data flow of packets includes directing each of the packets within the data flow to one of the data paths based on an amount of data previously transmitted on each of the plurality of data paths.

This disclosure describes techniques for providing early acknowledgments to a source device performing a data write operation within a data center or across a geographically-distributed data center. In one example, this disclosure describes a method that includes receiving, by a gateway device and from a source device within a local data center, data to be stored at a remote destination device that is located within a remote data center; storing, by the gateway device, the data to high-speed memory included within the gateway device; transmitting, by the gateway device, the data over a connection to the remote data center; after transmitting the data and before the data is stored at the remote destination device, outputting, by the gateway device to the source device, a local acknowledgment, wherein the local acknowledgment indicates to the source device that the data can be assumed to have been stored at the remote destination device.

Early acknowledgment for write operations

An air curtain air cleaner and sanitation system that incorporates established active UVC light projection technology with threshold air delivery air curtains to provide conditioned airflow by outward UVC light beam projection into the return airflow in a structure while maintaining an air control barrier between openings in a structure.

Integrated active duration UVC exposure for air curtain

A method during a first cycle includes receiving, at a first port of a device, a plurality of network packets. The method may include storing, by the device, at least some portion of a first packet of the plurality of network packets at a first address within a first record bank and storing, by the device and concurrent with storing the at least some portion of the first packet from the first address, at least some portion of a second packet of the plurality of network packets at a second address within a second record bank, different than the first record bank. The method may further include storing, by the device, the first address within the first record bank and the second address within the second record bank in the first link stash associated with the first record bank and updating, by the device, a tail pointer to reference the second address.

Efficient packet queueing for computer networks

Network access node virtual fabrics configured dynamically over an underlay network are described. A centralized controller, such as a software-defined networking (SDN) controller, of a packet switched network is configured to establish one or more virtual fabrics as overlay networks on top of the physical underlay network of the packet switched network. For example, the SDN controller may define multiple sets of two of more access nodes connected to the packet switched network, and the access nodes of a given one of the sets may use a new data transmission protocol, referred to generally herein as a fabric control protocol (FCP), to dynamically setup tunnels as a virtual fabric over the packet switched network. The FCP tunnels may include all or a subset of the parallel data paths through the packet switched network between the access nodes for a given virtual fabric.

Network access node virtual fabrics configured dynamically over an underlay network

This disclosure describes techniques that include performing cryptographic operations (encryption, decryption, generation of a message authentication code). Such techniques may involve the data processing unit performing any of multiple modes of encryption, decryption, and/or other cryptographic operation procedures or standards, including, Advanced Encryption Standard (AES) cryptographic operations. In some examples, the security block is implemented as a unified, multi-threaded, high-throughput encryption and decryption system for performing multiple modes of AES operations.

Multimode cryptographic processor

A highly programmable device, referred to generally as a data processing unit, having multiple processing units for processing streams of information, such as network packets or storage packets, is described. The data processing unit includes one or more specialized hardware accelerators configured to perform acceleration for various data-processing functions. This disclosure describes a parallel decoding of codewords within input data stream based on a codeword type and position.

Data processing unit having hardware-based parallel variable-length codeword decoding

In some embodiments, an apparatus includes an optical transceiver which includes a rate-adaptive forward error correction (FEC) encoder and a rate-adaptive FEC decoder. The rate-adaptive FEC encoder is configured to adjust a number of a set of known symbols associated with a codeword to achieve rate adaption. A length of the codeword is fixed. The rate-adaptive FEC encoder is configured to generate the codeword based on (1) a set of information symbols including the set of known symbols and a set of data symbols, and (2) a fixed number of a set of parity symbols generated using information symbols. The rate-adaptive FEC decoder is configured to receive a set of reliability values associated with a channel word, and expand the set of reliability values to produce an expanded set of reliability values. The rate-adaptive FEC decoder is further configured to decode the expanded set of reliability values.

Methods and apparatus for flexible overhead forward error correction (FEC) sub-system for optical fiber communication systems

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San Jose, CA, United States of America

Philip A Thomas