Juniper Networks, Inc.

Fungible, Inc.

Microsoft Technology Licensing, LLC

Nvidia Corporation

Srihari Raju Vegesna

Pradeep S Sindhu

Deepak Goel

Ayaskant Pani

Jean-Marc Frailong

Narendra Jayawant Gathoo

Wael Noureddine

Sarin Thomas

Philip A Thomas

Gopesh Goyal

John David Huber

Robert William Bowdidge

Rohit Sunkam Ramanujam

David James Ofelt

Chang-Hong Wu

Saurin Patel

Sunil Mekad

Aibing Zhou

Hariharan Lakshminarayanan Thantry

Stimit Kishor Oak

Craig R Frink

Shashi Kumar

Gerald Lampert

Steven W Aiken

Phillip A Thomas

Sureshkumar Nedunchezhian

Satish Deo

Suresh Vemula

Chetan Ambalal Shah

Sean Jeffrey Treichler

Gary S Goldman

Jue Wu

Anthony Michael Tamasi

Chi-Chung Kenny Chen

Harshad B Agashe

Naveen K Jain

Dinesh Jaiswal

Ravi Pathakota

Vikas Minglani

Sudipta Kundu

Firdaus Mahiar Irani

Kalpataru Maji

Oren Rubenstein

Rahul Wagh

Kapil Suri

Gurjeet Singh

Jaspal Kohli

Satish Dattatray Deo

Yixing Ruan

Venkatraman Chandrasekaran

Pratapa Reddy Vaka

Wing Leong Poon

Thomas J Meyer

Ajit Jain

This disclosure describes a set of techniques that include establishing and managing quality of service standards across storage cluster resources in a data center. In one example, this disclosure describes a method that includes establishing a quality of service standard for a tenant sharing a storage resource with a plurality of tenants, wherein the storage resource is provided by the plurality of storage nodes in the storage cluster; allocating a volume of storage within the storage cluster, wherein allocating the volume of storage includes identifying a set of storage nodes to provide the storage resource for the volume of storage, and wherein the set of storage nodes are a subset of the plurality of storage nodes; and scheduling operations to be performed by the set of storage nodes for the volume of storage.

Predictable and adaptive quality of service for storage

A fabric control protocol (FCP) is a data transmission protocol that enables spraying of individual packets for a given packet flow across a data center from an ingress interface of the source data processing unit (DPU) across a plurality of parallel data paths of a logical tunnel in the network fabric to the egress interface of the destination DPU. The FCP has congestion control mechanisms used to determine a degree of congestion at the egress interface of the destination DPU and to modify a send window size at the source DPU based on the degree of congestion. Reliable FCP (rFCP) extensions provide reliability enhancements and improved failure resilience within the data center. The rFCP extensions provide an unsolicited mode for low latency operation with enhanced reliability mechanisms. The rFCP extensions provide failure resilience mechanisms to identify and avoid failed paths among multiple parallel data paths within the logical tunnel.

Reliable fabric control protocol extensions for data center networks with failure resilience

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

Fabric control protocol with congestion control for 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

Reliable fabric control protocol extensions for data center networks with unsolicited packet spraying over multiple alternate data paths

Techniques for detecting path failures and reducing packet loss as a result of such failures are described for use within a data center or other environment. For example, a source and/or destination access node may create and/or maintain information about health and/or connectivity for a plurality of ports or paths between the source and destination device and core switches. The source access node may spray packets over a number of paths between the source access node and the destination access node. The source access node may use the information about connectivity for the paths between the source or destination access nodes and the core switches to limit the paths over which packets are sprayed. The source access node may spray packets over paths between the source access node and the destination access node that are identified as healthy, while avoiding paths that have been identified as failed.

Resilient network communication using selective multipath packet flow spraying

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 performing communications between devices using various aspects of Ethernet standards. As further described herein, a protocol is disclosed that may be used for communications between devices, where the communications take place over a physical connection complying with Ethernet standards. Such a protocol may enable reliable and in-order delivery of frames between devices, while following Ethernet physical layer rules, Ethernet symbol encoding, Ethernet lane alignment, and/or Ethernet frame formats.

Reliable communications using a point to point protocol

An apparatus includes an output bus configured to store data, a match table, one or more storage devices, and logic. The match table is configured to store a plurality of entries, each entry including a key value, wherein the match table specifies a matching entry in response to being queried by the query data. The one or more storage devices are configured to store operation information for each of the plurality of entries stored in the match table. The operation information specifies one or more instructions associated with each respective entry in the plurality of entries stored in the match table. The logic is configured to receive one or more operands from the output bus, identify one or more instructions from the one or more storage devices, and generate, based on the one or more instructions and the one or more operands, processed data.

Pipeline using match-action blocks

Growing community of inventors

San Jose, CA, United States of America

Srihari Raju Vegesna