Cisco Technology, Inc.

Skorpios Technologies, Inc.

Pensando Systems Inc.

Cisco Systems Inc.

David Systems, Inc.

Crescendo Communications, Inc.

Luca Cafiero

Mario Mazzola

Thomas James Edsall

Silvano Gai

Roger Antoine Karam

Satyanarayana Nishtala

Stephen B Krasulick

Michael Brian Galles

Krishna Doddapaneni

Sarat Kamisetty

Maurilio Tazio De Nicolo

Karl S Nakamura

John Zyskind

Philip R Manela

Majid Sodagar

Paveen Apiratikul

Soei-Shin Hang

Ray Kloth

Franco Tomada

Flavio Giovanni Bonomi

Dinesh Ganapathy Dutt

Ayan Banerjee

Ramana Mellacheruvu

Davide Bergamasco

Abhishek Saxena

Vishal Jain

Tom Edsall

Francis Matus

Massimo Prati

Peter Clarke Newman

Francisco M Matus

Zhiping Yang

Saeed Seyed

Sergio D Camerlo

Georges Akis

Hsing-Sheng Liang

Victor Odisho

Gary L Myers

Yida Zou

Bobby Parizi

Dmitry Barsky

Maurilio DeNicolo

Satya Nishtala

Philip Manela

Jack Brown Rector Iii

PCIe devices installed in host computers communicating with service nodes can provide virtualized NVMe over fabric services. A workload on the host computer can submit an SQE on a NVMe SQ. The PCI device can read the SQE to obtain a command identifier, an OpCode, and a namespace identifier (NSID). The SQE can be used to produce a LTP packet that includes the opcode, the NSID, and a request identifier. The LTP packet can be sent to the service node, which may access a SAN in accordance with the opcode and NSID, and can respond to the LTP with a second LTP that includes the request identifier and a status indicator. The PCI device can use the status indicator and the request identifier to produce a CQE that is placed on a NVMe CQ associated with the SQ.

Methods and systems for providing a virtualized NVMe over fabric service

Network traffic flows can be processed by routers, switches, or service nodes. Service nodes may be ASICs that can provide the functionality of a switch or a router. Service nodes can be configured in a circular replication chain, thereby providing benefits such as high reliability. The service nodes can implement methods that include receiving a first packet that includes a source address in a source address field and that includes a destination address in a destination address field. The first packet can be routed to a selected service node that is in the replication chain that includes a plurality of service nodes that are configured for chain replication of a service state information. A service node configured for NAT or some other service can use the first packet to produce a translated packet that can be transmitted toward a destination indicated by the destination address.

Methods and systems for service distribution using data path state replication and intermediate device mapping

PCIe devices installed in host computers communicating with service nodes can provide virtualized and high availability PCIe functions to host computer workloads. The PCIe device can receive a PCIe TLP encapsulated in a PCIe DLLP via a PCIe bus. The TLP includes a TLP address value, a TLP requester identifier, and a TLP type. The PCIe device can terminate the PCIe transaction by sending a DLLP ACK message to the host computer in response to receiving the TLP. The TLP packet can be used to create a workload request capsule that includes a request type indicator, an address offset, and a workload request identifier. A workload request packet that includes the workload request capsule can be sent to a virtualized service endpoint. The service node, implementing the virtualized service endpoint, receives a workload response packet that includes the workload request identifier and a workload response payload.

Methods and systems for loosely coupled PCIe service proxy over an IP network

A device is provided for optical mode spot size conversion to optically couple a semiconductor waveguide with an optical fiber. The device includes a waveguide comprising a waveguide taper region, which comprises a shoulder portion and a ridge portion above the shoulder portion. The ridge portion has a width that tapers to meet a width of the shoulder portion. The waveguide taper region comprises a first material. The device also has a mode converter coupled to the waveguide. The mode converter includes a plurality of stages, and each of the plurality of stages tapers in a direction similar to a direction of taper of the waveguide taper region. The mode converter is made of a second material different from the first material.

Multistage spot size converter in silicon photonics

A device for optical communication is described. The device comprises two transceivers integrated on one chip. A first transceiver can be used with existing optical-communication architecture. As a more advanced optical-communication architecture becomes adopted, the device can be switched from using the first transceiver to using a second transceiver to communicate using the more advanced optical-communication architecture.

Transceiver module for optical communication

Systems, methods, and non-transitory computer-readable storage media for performing hierarchical routing are disclosed. The method includes identifying routes in a computer network and arranging those routes in two separate routing tables. The first routing table is stored on a first module and the second routing table is stored on a second module.

Hierarchical routing with table management across hardware modules

An apparatus, system and method for facilitating higher bandwidth communication in a data center using existing multi-mode fibers. A first transceiver within a first device transmits Ethernet traffic to a second device over first and second optical fibers and receives return optical signals over the same first and second optical devices. By varying the wavelengths between the transmitted and received optical signals, the same optical fibers can be used to both transmit and receive optical signals. A second transceiver within the same housing as the first transceiver performs the same function. In this fashion, one device can be coupled to four bidirectional optical fibers, each transmitting and receiving optical signals at 20 Gbps.

Bidirectional optical transceiver

In one embodiment, a method for increasing potential data capacity for a high-density transceiver connector includes: aligning at least two transceiver-switch copper contacts opposite at least one network switch copper contact associated with a network switch, aligning at least two transceiver-cable copper contacts opposite at least one cable copper contact, and connecting the at least two transceiver-switch copper contacts to the at least two transceiver-cable copper contacts, wherein the high-density transceiver connector shares a form factor with a low-density transceiver connector.

High density connector

2&#xd7;40 Gbps BiDi optical transceiver

This document discusses, among other things, an example system and methods for memory expansion. An example embodiment includes receiving a memory request from a memory controller over a channel. Based on the memory request, the example embodiment includes selecting a location in memory to couple to a sub-channel of the channel and configuring the set of field effect transistors to couple the channel with the sub-channel. In the example embodiment, data may be allowed to flow between the memory controller and the location in the memory over the channel and the sub-channel.

System and methods for memory expansion

The present invention provides methods and devices for implementing a Low Latency Ethernet ('LLE') solution, also referred to herein as a Data Center Ethernet ('DCE') solution, which simplifies the connectivity of data centers and provides a high bandwidth, low latency network for carrying Ethernet and storage traffic. Some aspects of the invention involve transforming FC frames into a format suitable for transport on an Ethernet. Some preferred implementations of the invention implement multiple virtual lanes (&#x201c;VLs&#x201d;) in a single physical connection of a data center or similar network. Some VLs are &#x201c;drop&#x201d; VLs, with Ethernet-like behavior, and others are &#x201c;no-drop&#x201d; lanes with FC-like behavior. Some preferred implementations of the invention provide guaranteed bandwidth based on credits and VL. Active buffer management allows for both high reliability and low latency while using small frame buffers. Preferably, the rules for active buffer management are different for drop and no drop VLs.

Fibre channel over ethernet

A multi-stage network switch comprises a plurality of ingress port subsystems each comprising one or more ingress ports configured to receive packets. The switch also comprises a plurality of unscheduled crossbar switching elements connected to the ingress port subsystems that are configured to receive one or more packets from at least one of the ingress port subsystems. The switch further comprises a plurality of egress port subsystems each comprising a memory and a plurality of egress ports. The memory comprises at least one shared egress buffer configured to receive any packets forwarded by the crossbar switching elements from the ingress port subsystems directed to the egress port subsystem, and the egress ports are configured to transmit the packets received in the shared egress buffer.

Shared egress buffer in a multi-stage switch

In one embodiment, a method includes defining a plurality of virtual drives in a physical drive in communication with a plurality of servers, assigning virtualization parameters to each of the virtual drives, and communicating the virtualization parameters to a drive manager located at the physical drive and operable to configure the virtual drives on the physical drive. An apparatus is also disclosed.

Storage drive virtualization

Growing community of inventors

Palo Alto, CA, United States of America

Luca Cafiero