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GlobalLogic Ukraine

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Learn more about the tremendous value Open Data Plane brings to NFV

Ghodhbane Mohamed Amine

Nutanix uses a hyperconverged infrastructure to simplify hybrid cloud environments and manage workloads across private and public clouds. It offers a disaster recovery as a service solution called Xi Cloud to allow customers to recover workloads on public cloud if their on-premises infrastructure fails. Nutanix requires an SDN solution to provide overlay networking and features like microsegmentation across its hybrid environments. It is evaluating the OVN project for this purpose due to benefits like simpler abstractions, rich feature support, and integration with OVS, but also faces challenges with documentation, scaling limits, and feature parity. Nutanix plans to contribute to OVN by improving documentation, sharing reference architectures, and participating in code reviews and community efforts

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GlobalLogic Ukraine

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openflow

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This document discusses microservices architecture compared to a monolithic architecture. A microservices architecture breaks an application into smaller, independent services that each perform discrete functions. This allows for more rapid development and improved scalability. However, a microservices architecture is also more complex to deploy and manage. The document provides an example of how a VoIP application could use a microservices approach by breaking components like billing, fraud detection, and call analytics into separate services. It also discusses using Docker containers and services to deploy and scale the microservices architecture.

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Microservice is gaining increased adoption in the Telco NFV world. It is key to understand the design and deployment methodologies involved in developing Microservice based VNF. This talk provides an opensource practitioner approach to building and deploying a Microservice based VNF and includes the following: - Design patterns, workflow models - Design models for VNF placement, capacity management, scale-in/out and resiliency - Deployment considerations that includes handing of scale and fault tolerant VNF using well known Opensource tools. About the presenter: Prem Sankar works for Ericsson Opensource Ecosystem team and part of the Opendaylight and OPNFV team in Ericsson. Prem evangelizes SDN and Cloud and has given many sessions and conducted workshops around SDN and ODL. Prem is PTL of ODL COE project and currently driving the Kuberenetes and ODL Integration in Opendaylight community. Prem is a frequent speaker at opensource summits and has presented in Opendaylight, OPNFV and Open networking summits.

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Tungsten Fabric provides a network fabric connecting all environments and clouds. It aims to be the most ubiquitous, easy-to-use, scalable, secure, and cloud-grade SDN stack. It has over 300 contributors and 100 active developers. Recent improvements include better support for microservices, containers, ingress/egress policies, and load balancing. It can provide consistent security and networking across VMs, containers, and bare metal.

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This document discusses using OpenFlow to enable software-defined networking for wireless networks. It describes connecting wireless access points as OpenFlow ports and using an OpenFlow controller to programmatically manage radio coverage, load balancing, and QoS. It notes key differences from wired OpenFlow, such as the inability to control multicast/broadcast traffic at the access point. It also provides an overview of Linux wireless netdevice types (managed, AP, monitor modes) and how they could map to OpenFlow ports. The goal is to use this approach with Stratosphere experiments to implement wireless sensor networking and tracking applications.

DPDK Summit - 08 Sept 2014 - NTT - High Performance vSwitch

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DPDK summit 2015: It's kind of fun to do the impossible with DPDK

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FD.IO Vector Packet Processing

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Kirill Tsym discusses Vector Packet Processing: * Linux Kernel data path (in short), initial design, today's situation, optimization initiatives * Brief overview of DPDK, Netmap, etc. * Userspace Networking projects comparison: OpenFastPath, OpenSwitch, VPP. * Introduction to VPP: architecture, capabilities and optimization techniques. * Basic Data Flow and introduction to vectors. * VPP Single and Multi-thread modes. * Router and switch for namespaces example. * VPP L4 protocol processing - Transport Layer Development Kit. * VPP Plugins. Kiril is a software developer at Check Point Software Technologies, part of Next Generation Gateway and Architecture team, developing proof of concept around DPDK and FD.IO VPP. He has years of experience in software, Linux kernel and networking development and has worked for Polycom, Broadcom and Qualcomm before joining Check Point.

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The document discusses various virtual switching technologies in Linux, including bridge, macvlan, and Open vSwitch. It provides details on their implementations and performance. Bridge is the most commonly used software switch and functions similarly to a hardware switch, using MAC address learning and flooding. Macvlan supports multiple MAC addresses on one interface and comes in various modes like private, VEPA, and bridge. Open vSwitch is a multilayer virtual switch that supports OpenFlow and has advanced features. Performance tests show SR-IOV PCI passthrough has the highest throughput while bridges and macvlan have lower overhead than Open vSwitch.

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NTT Communications is taking several steps to implement SDN/OpenFlow networks and provide commercial services: 1. They have already launched an "Enterprise Cloud" service using virtualized network technology with OpenFlow switches. 2. They are currently testing interconnectivity between enterprise clouds using OpenFlow switches and automating connections to VPN networks using SDN controllers and APIs. 3. Future plans include developing an orchestrator to manage cloud and network resources across layers, expanding SDN/OpenFlow networks to WANs, and using network functions virtualization.

SR-IOV ixgbe Driver Limitations and Improvement

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SR-IOV is a device virtualization technology, it’s mainly used for improving network performance of virtual machines. However, SR-IOV has some limitations which come from hardware and/or driver implementation. For certain use case, such as Network Function Virtualization(NFV), those limitations are critical to provide services. Intel 10Gb NIC, Niantic(82599), has such limitations(e.g. VLAN filtering, multicast promiscuous) for NFV use case. This presentation will show the limitations and issues and how they are being addressed, then explain how implements VF multicast promiscuous mode support in ixgbe driver and VF trust, iproute2 functionality enhancement. This presentation was delivered at LinuxCon Japan 2016 by Hiroshi Shimamoto

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Yoshihiro Nakajima presented on software stacks that enable software-defined networking (SDN) and network functions virtualization (NFV). He discussed trends in SDN and NFV, introduced the Lagopus SDN software switch project, and described how Data Plane Development Kit (DPDK) helps optimize packet processing performance. The goal of his talk was to provide an NFV/SDN-aware software stack capable of 100Gbps switching through high-performance packet processing.

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The document summarizes seven deadly sins of packet processing that can negatively impact performance: 1) Unpredictable branches that confuse the branch predictor. Code should guide the compiler on likely/unlikely cases. 2) Incorrect prefetching that pulls in unnecessary data or data needed by other cores, adding overhead. Hardware prefetchers often help but can also share cache lines inadvertently. 3) Per-packet operations like memory I/O and atomics that have overhead magnified at the per-packet level.

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