The document discusses SDN and the RUNOS OpenFlow controller. It provides an overview of SDN principles and benefits. It then describes the RUNOS controller, including its in-kernel, fusion, and userspace versions. The userspace version aims to be high performance while also making application development easy. It discusses RUNOS' architecture, applications, and goals of improving on other controllers.
Open VSwitch .. Use it for your day to day needsrranjithrajaram
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Slides of open vSwitch used for Fudcon 2015.
Main agenda for this talk was.. why openvswitch is a better alternative to Linux bridge and why you should start using it as the bridge for your KVM host.
Open vSwitch - Stateful Connection Tracking & Stateful NATThomas Graf
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Update on status of connection tracking and stateful NAT addition to the Linux kernel datapath. Followed by a discussion on the topic to collect ideas and come up with next steps.
This document analyzes the performance of OpenVSwitch (OVS) using various tools. Key findings include:
- DPDK-based OVS achieves 9.9 Gbps throughput for a single flow on one core, far surpassing standard and Linux bridge OVS.
- Latency is lowest for direct NIC-NIC communication and increases for OVS and VM-based setups.
- The OVS kernel flow cache supports up to 200,000 flows but throughput degrades by 5% at 2,048 flows due to misses.
- Removing IPTables modules improves VM-OVS-VM throughput by up to 15%, and enabling VXLAN offload provides an additional 25
The document summarizes the new features and changes in Cumulus Linux 2.5.3 compared to 2.5.0. Key updates include:
- Enhancements to BFD configuration and support for IPv6 peers and multihop sessions.
- Improvements to BGP including new syntax for internal/external peers, support for unnumbered interfaces, and interface-based configuration.
- Addition of hardware watchdog support to detect switch failures.
- Extension of LACP bypass to allow multiple active interfaces in a bond.
- A new single-line license format located in /etc/cumulus/.license.
- Configuration of resilient hashing to minimize traffic disruption when links
The document discusses using the OpenDaylight BGP speaker to handle different types of routes including:
1. Link-state routes from IS-IS or OSPF that are advertised via BGP-LS and used to create a link-state topology.
2. IPv4 and IPv6 routes that are learned and advertised across domains.
3. Flowspec routes that function similar to OpenFlow rules but can leverage the BGP route reflector infrastructure with actions encoded as BGP communities.
The document outlines how to configure the BGP speaker through RESTCONF to handle these different routes and advertise them, and provides demos of using it for BGP-LS/PCEP, advertising IPv4
Accelerate Service Function Chaining Vertical Solution with DPDKOPNFV
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Service Function Chaining (SFC) is one of top 5 NFV use case. Supporting SFC in provider and enterprise networks requires performance assurance. Specifically, the Classifier and the Service Function Forwarder which are typically implemented in software such as virtual switches need to match line rate requirement. DPDK (Data Plane Development Kit) is an open source project comprising a set of libraries and drivers for fast packet processing. In this presentation, we will discuss our experiences accelerating SFC with DPDK. In addition, Telco and Datacenter carriers demands dynamic SFC that requires new SFC wire protocols (e.g. VxLAN-GPE and NSH) support in both data and control planes. We intend to share our experiences and future works of a high performance, NSH-aware SFC vertical solution with open-source ingredients: Openstack, Opendaylight, OpenvSwitch with DPDK acceleration.
A Perspective on the Future of Computer ArchitectureARCCN
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The document discusses the challenges with today's superscalar computer architectures and proposes ideas for future computer architectures. It summarizes the author's experience building real computers in the past, including some of the first implementations of out-of-order execution and VLIW. It then outlines drawbacks of the superscalar paradigm and discusses moving towards an algorithmically oriented post-superscalar era. The author proposes designing an unconstrained "best possible" new architecture first before adding constraints for compatibility.
DevOops - Lessons Learned from an OpenStack Network ArchitectJames Denton
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Join as we discuss various OpenStack Neutron network configuration options and issues experienced with VLAN, VXLAN, L2population, multicast, Neutron routers, Open vSwitch and more.
Managing Open vSwitch Across a Large Heterogenous Fleetandyhky
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Open vSwitch (OVS) is one of the more popular ways to provide VM connectivity in OpenStack. Rackspace has been using Open vSwitch in production since late 2011. In this session, we will detail the challenges faced with managing and upgrading Open vSwitch across a large heterogenous fleet. Finally, we will share some of the tools we have created to monitor OVS availability and performance.
Specific topics covered will include:
Why upgrade OVS?
Measuring OVS
Minimizing downtime with upgrades
Bridge fail modes
Kernel module gotchas
Monitoring OVS
Accelerating Neutron with Intel DPDK from #vBrownBag session at OpenStack Summit Atlanta 2014.
1. Many OpenStack deployments use Open vSwitch plugin for Neutron.
2. But its performance and scalability are not enough for production.
3. Intel DPDK vSwitch - an DPDK optimized version of Open vSwitch developed by Intel and publicly available at 01.org. But it doesn't have enough functionality for Neutron. We have implemented the needed parts included GRE and ARP stacks. Neutron pluging
4. We got 5 times performance improving for netwroking in OpenStack!
DPACC Acceleration Progress and DemonstrationOPNFV
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The session provides an update to on the DPACC project within the OPNFV with a brief discussion on APIs and implementation progress. This session will review the API definition progress and follow up with a demo highlighting a common application as the vNF running on top of the DPACC defined layers. The demo will highlight the use of both hardware and software acceleration utilizing the DPACC defined acceleration layers. The demonstrationIt will highlight the progress in optimizing performance and latency characteristics of a platform to realize the vision of NFV while meeting stringent requirements, particularly for certain workloads, required by carriers.
As containers are being deployed as part of multi tenant clusters, virtual multi layer switches become essential to interconnect containers while providing isolation guarantees. Assigning tenants their own private networks requires stateful network address translation (NAT) implemented in a scalable architecture to expose containers to public networks. Existing virtual switches integrated into the Linux kernel did not support stateful NAT so far. This presentation introduces a new virtual NAT service deployable as container built using existing kernel functionality such as network namespaces, routing rules and Netfilter to provide NAT services to existing virtual switches such as Open vSwitch and the Linux bridge but also the core L3 layer of Linux.
DragonFlow sdn based distributed virtual router for openstack neutronEran Gampel
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Dragonflow is an implementation of a fully distributed virtual router for OpenStackŽ Neutron⢠that is based on a light weight SDN controller
blog.gampel.net
The document discusses the DPDK Packet Framework and the ip_pipeline application generator. It describes how the framework uses ports, tables, and actions to quickly develop packet processing pipelines. It also explains how ip_pipeline allows defining packet processing applications by connecting different reusable pipeline types and mapping them across CPU cores. The framework provides a way to build high performance packet processing applications from configurable processing blocks.
In this session, weâll review how previous efforts, including Netfilter, Berkley Packet Filter (BPF), Open vSwitch (OVS), and TC, approached the problem of extensibility. Weâll show you an open source solution available within the Red Hat Enterprise Linux kernel, where extending and merging some of the existing concepts leads to an extensible framework that satisfies the networking needs of datacenter and cloud virtualization.
Taking Security Groups to Ludicrous Speed with OVS (OpenStack Summit 2015)Thomas Graf
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Open vSwitch (OVS) has long been a critical component of the Neutron's reference implementation, offering reliable and flexible virtual switching for cloud environments.
Being an early adopter of the OVS technology, Neutron's reference implementation made some compromises to stay within the early, stable featureset OVS exposed. In particular, Security Groups (SG) have been so far implemented by leveraging hybrid Linux Bridging and IPTables, which come at a significant performance overhead. However, thanks to recent developments and ongoing improvements within the OVS community, we are now able to implement feature-complete security groups directly within OVS.
In this talk we will summarize the existing Security Groups implementation in Neutron and compare its performance with the Open vSwitch-only approach. We hope this analysis will form the foundation of future improvements to the Neutron Open vSwitch reference design.
This document summarizes the new features in Cumulus Linux 2.5.4 compared to 2.5.3, including:
1) Support for new hardware models including a PoE switch and a Penguin switch.
2) Enhancements to network virtualization including LNV, head end replication in VXLAN active-active mode.
3) A new management VRF feature to separate management and data plane traffic.
This talk (in Russian) is about RUNOS OpenFlow controller publicly available at https://github.com/ARCCN/runos. Feel free to contact me if you have questions.
This document describes an SDN test suite that can be run using Vagrant and VirtualBox. It lists several SDN platforms and technologies that can be tested including ONOS, OpenDaylight, RouteFlow, VXLAN with OVS, and more. For each test, it provides a link to more information and sometimes includes screenshots or diagrams of example test setups and configurations. The goal is to provide an easy way to test and experiment with different SDN controllers and technologies in a virtualized environment.
Floodlight overview & performance comparison by patrick huangPatrick Huang
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This document compares reactive and proactive approaches for OpenFlow controllers and discusses their scalability. It summarizes the results of benchmarking different OpenFlow controllers. Reactive controllers like Floodlight and NOX see round-trip times increase rapidly with more switches due to weak hardware. Maestro has more steady performance. Reactive approaches have efficient flow table usage but slow setup times, while proactive approaches have zero setup time but hard management. A hybrid approach may improve efficiency and scalability.
The document discusses requirements for applying Software Defined Networking (SDN) in carrier grade networks using Openflow. It addresses three key requirements:
1) Scalability in terms of supporting a huge number of network elements and flows across multiple network domains. Openflow controllers must be able to scale sustainably to handle this.
2) Availability in that carriers require reliable failover and their networks cannot stop operating. Openflow controllers need to guarantee uninterrupted network function.
3) The IRIS SDN controller from ETRI aims to solve scalability and availability issues through a clustered, hierarchical design that can support large networks split across multiple operational units.
SDN basics and OpenFlow
The document discusses SDN and OpenFlow. It defines SDN as an approach that separates the network control plane from the forwarding plane, allowing for centralized control over the network. OpenFlow is introduced as an open standard protocol that enables communication between the control and forwarding planes. Key concepts covered include the control and data planes, SDN architecture, OpenFlow switch operation and flow tables, and OpenFlow protocol messages. The relationship between SDN and OpenFlow is established, with OpenFlow providing an API that enables SDN.
Dataplane programming with eBPF: architecture and toolsStefano Salsano
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eBPF is definitely a complex technology. Developing complex systems based on eBPF is challenging due to the intrinsic limitations of the model and the known shortcomings of the tool chain.
The learning curve of this technology is very steep and needs continuous coaching from experts. This tutorial will investigate:
What is eBPF and why it has gained a prominent position among the solutions to improve the packet processing performance in Linux/x86 nodes. We will shortly present some important use case scenarios for eBPF, like Kubernetesâ Cilium
The architecture of eBPF and its programming toolchain (e.g. bcc
What are the frameworks for eBPF programming, such as Polycube and InKeV.
How to make eBPF programming easier, more flexible and modular with HIKe/eCLAT
How to implement a custom application logic in eBPF with eCLAT using a python-like script
How to extend the framework and develop new modules
The Challenges of SDN/OpenFlow in an Operational and Large-scale NetworkOpen Networking Summits
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Jun Bi
Professor & Director
Tsinghua University
Outline
⢠Intra-AS (campus level) IPv6 source address validation using OpenFlow (with extension)
â Good for introducing new IP services to network
⢠Planning next step if we run SDN as a common infrastructure for new services and architectures
â Some personal viewpoints and thoughts on design challenges
â Forwarding abstraction for Post-IP architectures
â Control abstraction for scalable NOS and programmable/manageable virtualization platform
â Inter-AS policies negotiation abstraction
ONS2015: http://bit.ly/ons2015sd
ONS Inspire! Webinars: http://bit.ly/oiw-sd
Watch the talk (video) on ONS Content Archives: http://bit.ly/ons-archives-sd
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/2IDXhIf.
Changhoon Kim talks about the new PISA ASICs which promises multi Tb/s of packet processing with uncompromised programmability, and P4, a new domain-specific high-level language designed for networking. He shows how PISA and P4 will change the way we design, build, and run not just our networks, but also distributed systems and applications. Filmed at qconsf.com.
Changhoon Kim is a Director of System Architecture at Barefoot Networks. Prior to Barefoot, he worked at Windows Azure, Microsoftâs cloud-service division, and led engineering and research projects on the architecture, performance, and management of datacenter networks.
This document provides an introduction to real-time systems and discusses approaches to making Linux a real-time operating system. It defines hard and soft real-time systems and explains why Linux is commonly used instead of dedicated real-time operating systems. The document then discusses two main solutions, PREEMPT_RT and Xenomai 3, which provide patches to make Linux meet timing constraints through different approaches. It also provides an overview of basic real-time concepts like scheduling algorithms, preemptive vs. non-preemptive scheduling, and interprocess communication.
This document describes a student project to implement a software-defined network load balancer using the POX controller. It is divided into two parts: the first part analyzes the POX controller and its OpenFlow module, explaining components like the libopenflow library and discovery module. The second part details the development of a load balancer using a round-robin algorithm to distribute traffic across multiple servers, including modifications made to the POX code and testing in a Mininet environment to analyze performance.
Senior Network Analyst Tashi Phuntsho gives an overview of network automation at the fifth Bhutan Network Operators Group (btNOG 5) meeting on 4 June 2018.
This presentation about Software Defined Networking including Understanding the problem, Traditional network vs. SDN,Basic Concepts,Role of OpenFlow Protocol
Namespaces, Cgroups and systemd document discusses:
1. Namespaces and cgroups which provide isolation and resource management capabilities in Linux.
2. Systemd which is a system and service manager that aims to boot faster and improve dependencies between services.
3. Key components of systemd include unit files, systemctl, and tools to manage services, devices, mounts and other resources.
The Cisco Open SDN Controller is a commercial distribution of OpenDaylight that delivers business agility through automation of standards-based network infrastructure.
Built as a highly scalable software-defined networking (SDN) platform, the Open SDN Controller abstracts away the complexity of managing heterogeneous networks to improve service delivery and reduce operating costs.
The controller exposes REST APIs to allow other applications to take advantage capabilities of the controller and unlock the power of the underlying network infrastructure, and JAVA APIs to allow for the creation of new network services.
This session will present the basic constructs of the controller and the capabilities of the REST and JAVA APIs to demonstrate how the Open SDN Controller abstracts away the complexity of managing heterogeneous networks to improve service delivery and reduce operating costs.
The document provides an overview of the Linux kernel architecture and processes. It discusses key kernel concepts like the monolithic kernel design, system calls, loadable modules, virtual memory, and preemptive multitasking. It also covers kernel functions, layers, and context switching between processes. The CPU scheduler, multi-threading, inter-process communication techniques, and tunable kernel parameters are summarized as well.
This document discusses the Linux kernel architecture. It describes the Linux kernel as a monolithic kernel that supports system calls, loadable modules, preemptive multitasking, virtual memory, and other features. It outlines the kernel's layers and function libraries. It also discusses how the kernel handles processes and context switching, and how it uses a CPU scheduler to allocate processing time between tasks. Finally, it covers inter-process communication techniques like message passing, shared memory, and pipes that allow processes to exchange data.
Jennifer Rexford
Professor
Princeton University
ONS2015: http://bit.ly/ons2015sd
ONS Inspire! Webinars: http://bit.ly/oiw-sd
Watch the talk (video) on ONS Content Archives: http://bit.ly/ons-archives-sd
The Why and How of HPC-Cloud Hybrids with OpenStack - Lev Lafayette, Universi...OpenStack
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Audience Level
Intermediate
Synopsis
High performance computing and cloud computing have traditionally been seen as separate solutions to separate problems, dealing with issues of performance and flexibility respectively. In a diverse research environment however, both sets of compute requirements can occur. In addition to the administrative benefits in combining both requirements into a single unified system, opportunities are provided for incremental expansion.
The deployment of the Spartan cloud-HPC hybrid system at the University of Melbourne last year is an example of such a design. Despite its small size, it has attracted international attention due to its design features. This presentation, in addition to providing a grounding on why one would wish to build an HPC-cloud hybrid system and the results of the deployment, provides a complete technical overview of the design from the ground up, as well as problems encountered and planned future developments.
Speaker Bio
Lev Lafayette is the HPC and Training Officer at the University of Melbourne. Prior to that he worked at the Victorian Partnership for Advanced Computing for several years in a similar role.
This document provides an overview of Linux internals and networking concepts covered in 3 sentences or less:
It introduces Linux internals topics like processes, memory management, and virtual file systems. It also discusses networking concepts and provides a brief history of operating systems development. The document contains various sections on Linux components, kernel subsystems, virtual file systems, and transitioning to systems programming.
The document discusses the limitations of existing networks and introduces the concept of software-defined networking (SDN) as a solution. Some key limitations of traditional networks include slow innovation, closed systems, and difficulty experimenting on large production networks. SDN is described as separating the control plane and data plane, making the network programmable from a central controller. This allows for greater flexibility, innovation, and experimentation. The architecture of SDN is explained including layers for infrastructure, control, and applications. OpenFlow is discussed as an open protocol that allows the controller to remotely program the forwarding behavior of switches.
This document discusses the limitations of existing networks and introduces the concept of software-defined networking (SDN) as a solution. It outlines that current networks have separate control and data planes, making them difficult to program and innovate on. SDN is proposed to separate the control and data planes, making the network programmable through open interfaces and allowing for centralized control. This enables experimentation, flexibility, and easier integration of new applications and services. The key aspects of SDN architecture include the infrastructure, control, and application layers that communicate through the OpenFlow protocol to enable remote programming of forwarding rules in switches.
Limited Time Offer! Pay One Time to Access to Sociosight for Only $95Sri Damayanti
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How and Why Developers Migrate Python Tests (SANER 2022)Andre Hora
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Nowadays, Python developers can rely on two major testing frameworks: unittest and pytest. Due to the benefits of pytest (e.g., fixture reuse), several relevant projects in the Python ecosystem have migrated from unittest to pytest. Despite being performed by the Python community, we are not yet aware of how systems are migrated from unittest to pytest nor the major reasons behind the migration. In this paper, we provide the first empirical study to assess testing framework migration. We analyze how and why developers migrate from unittest to pytest. We mine 100 popular Python systems and assess their migration status. We find that 34% of the systems rely on both testing frameworks and that Python projects are moving to pytest. While some systems have fully migrated, others are still migrating after a long period, suggesting that the migration is not always straightforward. Overall, the migrated test code is smaller than the original one. Furthermore, developers migrate to pytest due to several reasons, such as the easier syntax, interoperability, easier maintenance, and fixture flexibility/reuse, however, the implicit mechanics of pytest is a concern. We conclude by discussing practical implications for practitioners and researchers.
How to Choose the Right Partner for Outsource Website DevelopmentRollout IT
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Choosing the right partner for Outsource Website Development is crucial to ensuring the success of your project. Here are key factors to consider when making this decision.
My Bully Is My Lover Apk CH1 EP4 (Gallery Unlock, MOD)Apk2me
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You can get this game heređ
https://apk2me.com/my-bully-is-my-lover-mod-apk/
About Game
"My Bully Is My Lover" is a visual novel game that has garnered attention for its engaging narrative and interactive gameplay. Developed for the Android platform, this APK visual novel combines elements of romance, drama, and a touch of mystery to create an immersive experience for players.
The storyline revolves around the protagonist, who encounters a former bully from their past. As they navigate this complicated relationship, players are presented with choices that affect the direction and outcome of the narrative. The game offers multiple endings, each shaped by the decisions made throughout the gameplay, which adds a layer of replayability and depth.
One of the standout features of "My Bully Is My Lover" is the gallery unlock system. This feature is highly appreciated in visual novels as it allows players to revisit key scenes, special illustrations, and pivotal moments from the game. The gallery typically includes a collection of CG (computer graphics) images that are unlocked as the player progresses through the story and achieves certain milestones. This not only provides a reward mechanism for players but also encourages them to explore different paths and make varied choices to unlock all the available content.
The characters in "My Bully Is My Lover" are well-developed, each with unique backstories and personalities. The game's art style is visually appealing, with detailed character designs and expressive animations that enhance the storytelling. The dialogue is another strong point, often blending humor, tension, and heartfelt moments to keep players engaged.
Gameplay mechanics are straightforward, typical of visual novels. Players read through the narrative and make choices at critical junctures. These choices can range from seemingly trivial decisions to major turning points that significantly alter the course of the story. The game saves progress automatically, allowing players to return to previous points and explore different outcomes without starting over completely.
The APK format makes "My Bully Is My Lover" accessible to a wide audience, especially those who prefer playing on mobile devices. Installation is straightforward, and the game is optimized for smooth performance on Android devices. This portability allows players to enjoy the game on the go, making it a convenient option for fans of visual novels.
Overall, "My Bully Is My Lover" stands out in the visual novel genre with its compelling story, well-crafted characters, and engaging gameplay mechanics. The gallery unlock feature adds an extra dimension of enjoyment, providing a tangible reward for players' efforts and enhancing the overall experience. Whether you're a seasoned fan of visual novels or new to the genre, this game offers a rich and satisfying adventure that is well worth exploring.
In today's dynamic business landscape, ERP software systems are essential tools for businesses worldwide, including those in the UAE. These systems cater to the unique needs of the UAE's rapidly changing economy and expanding industries.
This blog examines the top 10 ERP companies in the UAE, highlighting their innovative products, exceptional customer support, and significant impact on the regional business community. These companies excel in providing ERP solutions that enhance efficiency and growth for businesses throughout the UAE.
1. **Odoo**
- Odoo ERP is a comprehensive business management solution with features like accounting, HR, sales, inventory control, and CRM. Its user-friendly interface simplifies processes and boosts productivity. Banibro IT Solutions leverages Odoo to transform business operations.
- **Details:**
- Suitable for: Small, Medium, Large Businesses
- Open Source: Yes
- Cloud-based: Yes (Cloud and On-premises)
- Support: Phone, Chat, Email
- Payment: Yearly, Monthly
- Multi-Language: Yes
- OS Support: Windows, Mac, iOS, Android
- API: Available
2. **Microsoft Dynamics 365**
- Dynamics 365 offers a centralized platform for small and medium-sized businesses, integrating with Microsoft apps and cloud services for scalability. It simplifies data processing with user-friendly interfaces and customizable reporting.
- **Details:**
- Suitable for: Small, Medium, Large Businesses
- Support: Phone, Chat, Email, Knowledge Base
- Payment: One-Time, Yearly, Monthly
- Multi-Language: No
- OS Support: Web App, Windows, iOS, Android
- API: Not specified
3. **FirstBIT ERP**
- Known for serving small and medium-sized businesses, FirstBIT ERP offers comprehensive solutions and exceptional customer service, enhancing productivity and efficiency.
- **Details:**
- Suitable for: Medium, Large Businesses
- Open Source: Yes/No
- Cloud-based: Yes (Cloud and On-premises)
- Support: Phone, Email, Video Tutorials
- Payment: Yearly, Monthly
- Multi-Language: Yes
- OS Support: Web App, Windows, Mac, iOS, Android
- API: Available
4. **Ezware Technologies**
- Ezware Technologies provides top-notch ERP solutions for various industries with user-friendly modules that streamline complex business processes.
- **Details:**
- Suitable for: Small, Medium, Large Businesses
- Support: Phone, Chat, Email, Knowledge Base
- Payment: One-Time, Yearly, Monthly
- Multi-Language: No
- OS Support: Web App, Windows, Mac, iOS, Android
- API: Not specified
5. **RealSoft**
- RealSoft by Coral is popular in Dubai, offering modules for contracting, real estate, job costing, manufacturing, trading, and finance. It's VAT-enabled and affordable for medium-sized businesses.
- **Details:**
- Suitable for: Small, Medium, Large Businesses
- Open Source: No
- Cloud-based: On-premises
-
đ¤ We have compiled the top data breaches and cybersecurity incidents in the first half of 2024, so you don't have to do it...
đď¸âđ¨ď¸ Several high-profile data breaches, along with significant cybersecurity incidents, highlighted the critical need for robust cybersecurity measures in the first half of 2024. For a comprehensive analysis of these challenges and trends, check out SOCRadar's â2024 Mid-Year Cybersecurity Review Report.â Stay informed and prioritize cybersecurity to protect your organization and personal data.
How Generative AI is Shaping the Future of Software Application DevelopmentMohammedIrfan308637
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Generative AI is revolutionizing software development. Find out how it enhances innovation and productivity. https://www.qisacademy.com/blog-detail/the-power-of-generative-ai-in-software-application-development
Literals - A Machine Independent Feature21h16charis
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Introduction to Literals, A machine independent feature. The presentation is based on the prescribed textbook for System Software and Compiler Design, Computer Science and Engineering - System Software by Leland. L. Beck,
D Manjula.
A Construction Equipment Management System viable resource following, giving a complete and straightforward outline of fundamental asset data. It offers informed information about the resource's whereabouts, user identification, expected availability, and upcoming maintenance needs. This approach will decrease the likelihood of undesirable misfortunes because of any equipment breakdown. Likewise, when something turns out badly, the system empowers you to make a pre-decided fall back, guaranteeing your tasks can never be stopped.
Know more details here: https://plaza.rakuten.co.jp/nyggsautomation/diary/202307180000/
Exploring the Power of the MaxiBlocks Interface: A Game-Changer for WordPress Websites
Building a website can be daunting, but with the right tools, it becomes an enjoyable and efficient process. Enter MaxiBlocks, an innovative interface designed to enhance the WordPress experience. In this blog, we'll explore the various facets of MaxiBlocks and how it can revolutionize your website-building journey.
Getting Started with WordPress and MaxiBlocks
If you're new to WordPress, getting started might seem overwhelming. MaxiBlocks simplifies this process significantly. The WordPress Getting Started guide on MaxiBlocks provides step-by-step instructions to set up your WordPress site, making it accessible even for beginners.
Why Choose MaxiBlocks for Your Website?
MaxiBlocks stands out among WordPress website builders due to its user-friendly interface and powerful features. It caters to both novices and experienced developers, offering a range of tools that streamline the website creation process.
Navigating the Digital Supply Chain_ Odoo ERPâs Impact on Logistics.pdfBanibro IT Solutions
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In todayâs digital landscape, supply chain management is increasingly complex. To maintain productivity, businesses must integrate advanced technologies. A transformative solution is Odoo ERP, an all-in-one business tool that enhances logistics operations. This article explores Odoo ERPâs impact on digital supply chains, focusing on its features, benefits, and real-world applications.
**Understanding the Digital Supply Chain**
A digital supply chain uses technology at every stage, from production to delivery, incorporating IoT, AI, and big data to optimize operations, reduce costs, and enhance efficiency. This approach enables companies to respond swiftly to market demands and minimize operational risks.
**The Role of Odoo ERP in Logistics**
Odoo ERPâs comprehensive system facilitates multiple business functions with various modules that improve inventory management, warehouse operations, order fulfillment, and transportation processes.
1. **Inventory Management**
- **Real-Time Tracking:** Visualize stock movements across locations to avoid shortages and overstocking.
- **Automated Replenishment:** Automatically generate purchase orders when stock levels drop.
- **Inventory Forecasting:** Predict future inventory needs using historical data and market analysis.
2. **Warehouse Management**
- **Warehouse Setup Optimization:** Streamline warehouse layout for maximum efficiency.
- **Batch and Serial Number Tracking:** Track items for traceability and quality control.
- **Automated Warehouse Operations:** Automate tasks from receiving to shipping to reduce errors and enhance accuracy.
3. **Order Fulfillment**
- **Order Processing:** Automate order capture and processing to eliminate delays.
- **Shipping Integration:** Manage shipments and track deliveries within the ERP system.
- **Customer Communication:** Provide real-time updates on order status to improve customer satisfaction.
4. **Transportation Management**
- **Route Optimization:** Use AI to optimize delivery routes, saving costs and improving satisfaction.
- **Carrier Selection:** Compare carriers based on cost, delivery time, and reliability.
- **Freight Cost Management:** Gain insights into freight costs to manage expenses effectively.
**Benefits of Implementing Odoo ERP in Logistics**
1. **Enhanced Visibility:** Track and manage logistics operations with comprehensive visibility.
2. **Improved Efficiency:** Automate tasks and optimize processes to reduce errors and accelerate workflows.
3. **Cost Reduction:** Achieve savings through efficient inventory, warehouse, and transportation management.
4. **Scalability:** Expand easily with Odoo ERPâs scalable solutions for businesses of all sizes.
5. **Enhanced Customer Satisfaction:** Meet customer expectations with on-time fulfillment and efficient communication.
**Real-World Applications of Odoo ERP in Logistics**
ERP software has become essential for modern businesses, managing everything from finance and human resources to supply chain and customer relationships. This article highlights the top 5 ERP companies in India offering affordable and reliable software solutions for business transformation.
1. **Odoo (Banibro IT Solutions Pvt Ltd)**: Banibro IT Solutions provides unique ERP services, excelling in innovative technologies and customer satisfaction. They offer comprehensive services in finance, sales, CRM, and project management, meeting competitive market demands.
2. **Sage X3 (Tresilient Business Solutions Pvt Ltd)**: Sage X3 is a versatile ERP solution suitable for various industries, from small enterprises to large corporations. It covers finance, supply chain management, manufacturing, and distribution, integrating critical business operations for overall growth.
3. **Oracle Cloud ERP (Capgemini)**: Oracle Cloud ERP offers cloud-based applications that optimize business operations using AI and machine learning. It provides a unified platform for finance, procurement, and project management, enabling data-driven decisions and innovative strategies.
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2. What is SDN?
Basic principles
⢠Physical separation between forwarding plane and control plane.
⢠Centralized management.
⢠Programmability.
⢠Open standards, vendor-neutral control interface
Benefits
⢠Simplify network
operation (OPEX)
⢠Reducing equipment
cost (CAPEX)
⢠New innovative
services
Deployments
...
âSDN means thinking differently about networkingâ
SDN = Software Defined Networking
3. SDN/OpenFlow basics
A
B
⢠First packet is sent to the controller (OF_PACKET_IN).
⢠Controller calculates the best route across the network (the lowest cost and
according to the routing policies).
⢠Appropriate OpenFlow rules are sent to switches with optional reverse route too
(OF_PACKET_OUT/FLOW_MOD).
A
B
A -> B
OpenFlow
controller
host/client
host/client
switch 1 switch 2
switch 3 switch 4
4. SDN/OpenFlow basics
A
B
⢠First packet is sent to the controller (OF_PACKET_IN).
⢠Controller calculates the best route across the network (the lowest cost and
according to the routing policies).
⢠Appropriate OpenFlow rules are sent to switches with optional reverse route too
(OF_PACKET_OUT/FLOW_MOD).
⢠Dynamic reconfiguration in case of network error.
A
B
OpenFlow
controller
host/client
host/client
switch 1 switch 2
switch 3 switch 4
5. Requirements to SDN controller
⢠Programmability
â Functionality: applications and services
â Programming interface
⢠Performance
â Bandwidth
â Latency
⢠Reliability and safety
â 24/7
⢠DC requires processing
>10M events per second
⢠Reactive controllers are
more âsensitiveâ
6. Results of study (2013)
⢠Maximum performance is 7 000 000 events per second.
⢠Minimum latency is from 50 to 75us.
⢠Shortcomings:
â Reliability of controllers caused questions
â Performance was insufficient
[1] A. Shalimov, D. Zuikov, D. Zimarina, V. Pashkov, R. Smeliansky, "Advanced Study of SDN/OpenFlow controllers",
Proceedings of the CEE-SECR '13: Central & Eastern European Software Engineering Conference in Russia, ACM SIGSOFT,
October 23-25, 2013
7. RUNOS
⢠It is a historical series of SDN/OpenFlow controllers
â In-kernel â super fast, hard to develop apps
â Fusion â userspace memory control interface to the kernel
controller
â Userspace (Easy) [main]â fully userspace controller with
high functionality, easy to develop your apps, relatively
high performance comparing with existing controllers
â Distributed â HA version of the userspace controller
⢠The project is in the open source arccn.github.io/runos
(currently only userspace version)
[main meaning] RUNOS = Run (fast) Operating System
RUNOS = RUssian Network Operating System
8. In-kernel controller
We implemented in-kernel OpenFlow controller [2]:
⢠It is super fast
â No context switching on network communication
â Less time consuming memory translation procedure
⢠It is very hard to develop your own programs
â low-level programming language
â limited number of libraries and tools
â high risk to corrupt the whole system
[2] P. Ivashchenko, A. Shalimov, R. Smeliansky "High performance in-kernel SDN/OpenFlow controller", Proceedings of
the 2014 Open Networking Summit Research Track, USENIX, March 3-5, 2014 Santa Clara, USA
10. Fusion: Program interface to In-kernel version
10
User space
Kernel space
Applications
Services
OpenFlow
Applications
Services
OpenFlow
Applications
Services
OpenFlow
NOX, Pox, Floodlight,
OpenDaylight, MUL,
etc
ARCCN
+: wide range
of applications
-: low
performance
+: fast performance
-: no applications
What is in the middle?
Offload architecture:
⢠Apps are in userspace
⢠Frequently used services
is in kernel (e.g., topo)
⢠Communication interface
+: wide range of
applications
+: fast performance
[3] Shalimov A., Ivashchenko P. Inâkernel
offloading of an SDN/OpenFlow Controller
Proceedings of the Modern Networking
Technologies (MoNeTec), IEEE, Moscow, Russia,
2014
11. Experimental evaluation
⢠The performance is 15M per second (2.5x
faster).
⢠Latency is 50us.
11
I/O throughput (cbench + l2learning), fps Response time, us
12. Programming interface
Interface through shared memory:
⢠/dev/ctrl â open kernel
⢠ioctl() â subscribe to events
⢠mmap() â get access to shared
memory
⢠poll() â read info from the
kernel
â POLLIN, POOLRDNORM,
POLLRDBAND, POLLOUT
⢠write() â flush output buffers
l2 learning example code
Interface is still difficult:
⢠Low-level C
⢠Applications require explicit
synchronization among themselves
⢠Even despite that now it is possible to
use standard libraries
13. Easy RUNOS = RUNOS
⢠Project objective
â âCould an OpenFlow controller be both easy to
develop applications for and also high
performance?â
â To develop system which will be convenient for
development of new network applications
â Remember about the speed and about further
integration with other versions of the controller
[UNDER ACTIVE DEVELOPMENT]
[the main controller for now, this is what we call runos today]
14. RUNOS goals
⢠The existing OpenFlow controllers have problems
with running multiple apps independently:
â Connect third party apps in one chain, hardcode for
new cases, need third party apps modifications
â No built-in conflict resolution system: apps might send
overlapping rules (see example on the next slide)
â âŚ
RUNOS is intended to solve these problems and
simplify developing complex OpenFlow
applications.
15. Possible problems in OpenFlow controllers
Forwarding SPAN
OpenFlow
ip_dst:10.0.0.1
Rule 1
Rule 2
Flow table
Example of the problem with running several apps independently:
⢠Forwarding and Span apps. First app sends a flow over port 1, while second ones
sends the same flow over port 5. Rules intersect with each other.
⢠Final rules order in the flow table is unknown.
⢠Packets will go using only the first rule. Thus, only one app will work. Conflict!
⢠We may to resolve such conflicts and some others. Just ip_src:10.0.0.1 -> output:1,5!
Rule 1: ip_src:10.0.0.1 -> output:1
Rule 2: ip_src:10.0.0.1 -> output:5
New
packet
never used
16. Launch options
⢠The number of threads of the
controller set
â for interaction with switches
â for applications
⢠List of applications
â its parameters (eg. poll-interval)
â to pin the thread of execution in
exclusive use (pin-to-thread,
own-thread)
Config (json):
âcontrollerâ: {
âthreadsâ: 4
},
âloaderâ: {
âthreadsâ: 3
},
âlink discoveryâ: {
âpoll-intervalâ : 10,
âpin-to-threadâ : 2
},
âlearning switchâ: {
}
âŚ
17. Architecture
Controller
TraceTree
Workers
Thread pool
Initialization of the controller:
1. Starting the desired number of
threads
2. Starting the service components
3. Starting applications and their
distribution by threads
4. Determination of the order of event
processing by applications
Apps
Logical pipelines
18. RUNOS Details
⢠Subscription on events
â Explicitly on packet_in
â Implicitly on switch up/down, port_description, stats.
⢠Two pipelines of execution
â run-to-completion
⢠sorting the applications are running on the basis of dependences
â deferred execution
⢠TraceTree - conflict resolution and auto rules
generation
â Arrangement of priorities of rules, combining of rules
â LOAD, MATCH, READ abstractions
â MAPLE based
19. Features
⢠Graphical user interface - enterprise network management
system [4]
⢠Wide range of applications:
â L2/L3 forwarding, QoS, multipath forwarding, network virtualization,
anti-DDOS, monitoring, load balancer, ACL, firewall, authentication,
SPAN, NAT, ARP, DNS, DHCP, BGP, verification and troubleshooting, WiFi,
OpenStack
[4] A. Shalimov, D. Morkovnik, S. Nizovtsev, R. Smeliansky EasyWay: Simplifying and automating enterprise network
management with SDN/OpenFlow// 10th Central and Eastern European Software Engineering Conference in Russia,
CEE-SECR 2014Đą, ACM SIGSOFT, Moscow, Russia.
21. Implementation details
Keywords: C++11, QT
Major third-party components:
⢠libfluid project (_base, _msg)
â for interaction with switches and parsing the OpenFlow 1.3 messages
⢠libtins
â parsing of packets in OpenFlow messages
⢠glog (google log)
â logging, multithreaded
⢠tcmalloc (google performance tools)
â alternative faster implementation of malloc/free
⢠json11
â parsing of the configuration file
⢠boost graph
â storage of topology, calculate the route
22. Releases roadmap
⢠Now version 0.2
â controllerâs core
â building topology
â building a route across the network
â the first version of the rules generation subsystem
⢠Next version 0.3
â Rest API (Floodlight compatible)
â WebUI
⢠0.4
â Applications ARP, DHCP
â Optimization of performance
â Statistics, metering
⢠0.5
â Advanced routing applications , qos
â Load balancing
â Firewall/ACL
âŚ
⢠1.0
â Management system corporate network EasyWay
⢠2.0
â Integration with In-kernel version (transparent for applications)
23. Distrib Runos: SDN for backbone networks
Distributed OpenFlow controller ARCCN
⢠Self-adjusting and self-organizing distributed controller for
DC and WAN.
â Self-adjusting as possible to ensure the specified quality of
network management through scalable performance within a
cluster and between clusters.
â Self-organizing possible redistribution network segment
between adjacent networks in case of unavailability of a
dedicated cluster controllers.
⢠Specification:
â OpenFlow 1.3
â 100M flows per second
â Latency is 500us
â Supports up to 10000 switches
24. Distrib: Distributed OpenFlow controller
Main features:
⢠Reliability and fault tolerance (redundancy within a cluster and between clusters)
⢠Load balancing (adding new nodes to the controller, depending on the load)
⢠Centralized management and vision of the entire network
⢠Working with distributed network applications
⢠Safety and protections against external loads
25. Organization scheme
⢠Synchronization/reservation
â via DB
â Special protocol
â Cold, hot, warm
⢠Additional functions
â Placement of nodes of the
controller in network
â Redistribution of loading
⢠migration of switches
⢠Characteristics
â Switching on the reserve
controller borrows on average
50ms
â Throughput decreases by 10%
(for NOX with 30K to 25K)
[5] Pashkov V, Shalimov A., Smeliansky R. Controller Failover for SDN Enterprise Networks // Proceedings of the Modern
Networking Technologies (MoNeTec), IEEE, Moscow, Russia, 2014,
26. Conclusion
⢠Series of OpenFlow controllers:
â From fast to programmable and distributed
⢠The project RUNOS is in the open source
â OpenFlow controller arccn.github.io/runos.
⢠RUNOS is already used in universities and in
industry (service providers, telecom operators,
DCs).
⢠We invite everyone to join the development!
http://arccn.ru/ ashalimov@arccn.ru
@alex_shali
@arccnnews
27. Video about SDN
⢠A bit of humour
â SDN from different points of view
â http://www.youtube.com/watch?v=GRVygzcXrM0