VXLAN in the contemporary data center
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The document discusses network virtualization technologies used in contemporary virtualized data centers. It describes how software-defined networking (SDN), network function virtualization (NFV), and network virtualization (NV) can alleviate increased network demands from server, storage, and network virtualization. Specifically, it outlines virtual extensible local area network (VXLAN) as a common network overlay technique, how it encapsulates and transports virtualized layer 2 frames over layer 3 networks using VXLAN tunnel end points (VTEPs) and a VXLAN network identifier (VNI). VXLAN aims to solve limitations of spanning trees, VLAN ranges, and switch table sizes in multi-tenant environments.
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This document provides an overview of Software-Defined Networking (SDN). It discusses how SDN decouples the network control plane from the forwarding plane, allowing for centralized control and programmability. The key components of the SDN architecture include OpenFlow switches, an SDN controller, and northbound and southbound APIs. OpenFlow is described as the primary southbound protocol, allowing the controller to program how packets are handled by switches. Example applications of SDN mentioned are network slicing and multi-tenancy in cloud computing. Challenges for SDN adoption are also noted.
SDN: A New Approach to Networking Technology
This document summarizes SDN (Software Defined Networking) and its relationship to network virtualization and NFV (Network Function Virtualization). It discusses how SDN separates the control plane from the data plane to make networks programmable. It also describes how network virtualization allows multiple virtual networks to run simultaneously on top of a physical network. NFV aims to virtualize network functions like firewalls and load balancers that were traditionally hardware-based. The document argues that SDN, network virtualization, and NFV work together to provide flexible, easily reconfigurable networks and reduce costs. When combined, they allow networks to be centrally programmed and abstracted from physical hardware.
Openstack Neutron Insights
This presentations gives basic overview about networking and in depth insights about Openstack Neutron component.
Covers understanding on VLAN,VXLAN,Openstack vSwitch
IFD30104 Chapter 1
This document provides an overview of wide area networks (WANs) including what they are, how they have evolved, common connection technologies and options. A WAN connects devices over a broader geographic area than a local area network (LAN) using carriers. As networks grow, hierarchical designs must also grow to aggregate WAN traffic and provide scalability, availability and user access. Common WAN connection technologies include dedicated leased lines, circuit-switched options like ISDN, and packet-switched options like Frame Relay, ATM, DSL, cable broadband and wireless. Virtual private networks (VPNs) provide secure, encrypted connections between private networks over public networks like the Internet.
Atf 3 q15-6 - solutions for scaling the cloud computing network infrastructure
This document discusses using Arista networking solutions to scale cloud computing networks. It presents two use cases: 1) using OpenStack with the ML2 plugin for network virtualization, and 2) using an SDN controller with OVSDB for network abstraction. For use case 1, it demonstrates how CloudVision Exchange integrates with OpenStack Neutron to provide network automation, visibility, and improved scaling through VXLAN hardware VTEPs and an L3 ECMP fabric. For use case 2, it shows how CloudVision Exchange abstracts the network topology to allow adding bare metal servers and VXLAN gateways through an SDN controller using OVSDB.
Contrail Enabler for agile cloud services
2014/9/11 に開催しましたOpenContrail Meet-upでの弊社上野(Distinguished Engineer, SDN Team, Juniper Networks, Inc.)のセッション資料です。 ぜひ、ご覧ください。
[OpenStack 스터디] OpenStack With Contrail
Contrail provides software defined networking and virtual network capabilities for OpenStack clouds. Key components of Contrail include the Contrail controller, vRouters running on hypervisors, and integration with OpenStack using Neutron and Nova. Virtual networks in Contrail can be created which provide isolation between groups of virtual machines and connectivity to physical networks.
Dave Chandler Presents SDN at World Wide Technology's TECday - St. Louis
This document provides an overview of enterprise networking solutions offered by ATC Solutions Engineering. It discusses their mission to deliver value through networking solution assessments and provide clarity for business technology decisions. It then lists and briefly describes various networking domains and solutions they consult on, such as data center networking, campus/branch networking, software-defined networking, and lab as a service.
PLNOG 13: Nicolai van der Smagt: SDN
Nicolai van der Smagt has been in the business of designing, implementing and running SP networks for over 15 years. He has worked with DOCSIS, DSL and FTTH operators. Nowadays, Nicolai is helping Infradata’s pan-European customers build better access, aggregation and core networks, but his focus is on the data center, SDN, NFV and the whitebox switching revolution. His motto: “Simplicity is sophistication”.
Topic of Presentation: SDN
Language: English
Abstract:
Open source SDN that actually works -today
OpenContrail is an open source (Apache 2.0 licensed) project that provides network virtualization in the data center, using tried and tested open standards. It provides northbound APIs, integrates in Openstack or Cloudstack and is available today!
In this slot we’ll show you the architecture and ideas behind the technology and how OpenContrail enables you to avoid the pitfalls that other (closed) SDN solutions bring. If time permits we’ll also demo the technology.
Opencontrail network virtualization
Opencontrail is network virtualisation software designed to enable virtual overlay networks in the datacenter.
Similar to VXLAN in the contemporary data center (20)
PLNOG16: VXLAN Gateway, efektywny sposób połączenia świata wirtualnego z fizy...
PLNOG16: VXLAN Gateway, efektywny sposób połączenia świata wirtualnego z fizy...
PLNOG15: Is there something less complicated than connecting two LAN networks...
PLNOG15: Is there something less complicated than connecting two LAN networks...
Network Virtualization for Cloud Services Infrastructure
Network Virtualization for Cloud Services Infrastructure
VMworld 2013: Operational Best Practices for NSX in VMware Environments
VMworld 2013: Operational Best Practices for NSX in VMware Environments
Atf 3 q15-4 - scaling the the software driven cloud network
Atf 3 q15-4 - scaling the the software driven cloud network
Software-Defined Networking(SDN):A New Approach to Networking
Software-Defined Networking(SDN):A New Approach to Networking
Atf 3 q15-6 - solutions for scaling the cloud computing network infrastructure
Atf 3 q15-6 - solutions for scaling the cloud computing network infrastructure
Dave Chandler Presents SDN at World Wide Technology's TECday - St. Louis
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More from Anthony Chow
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This document provides an overview of decentralized applications (DApps) and their development. It defines DApps as programs run by many people that create or use a decentralized network for a specific purpose. Ethereum-based DApps typically have an associated smart contract and a web frontend. The document outlines the key building blocks of DApps and tools for their development, including Solidity, Truffle, Web3.js, and security best practices. It also provides a demo of building a simple DApp using Truffle and discusses additional resources for DApp developers.
Container security
This document discusses container security and provides information on various related topics. It begins with an overview of container security risks such as escapes and application vulnerabilities. It then covers security controls for containers like namespaces, control groups, and capabilities. Next, it discusses access control models and Linux security modules like SELinux and AppArmor that can provide container isolation. The document concludes with some third-party security offerings and emerging technologies that aim to enhance container security.
MQTT security
This document discusses securing MQTT communication for IoT. It begins with an overview of MQTT and IoT concepts. It then covers MQTT security topics like TLS, authentication using JSON web tokens and OAuth2.0. Finally, it provides steps to secure a Mosquitto MQTT broker using TLS, authentication and access control lists. The goal is to help secure MQTT protocols which are widely used for IoT communication.
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gRPC; Authentication; Developer Week SF; security; Auth0; JWT; OAuth2; SSL: TLS; Authorization; Python; Hello World
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Container security
The document discusses container security, providing advantages and disadvantages of containers as well as threats. It outlines different approaches to container security including host-based methods using namespaces, control groups, and capabilities as well as container-based scanning and digital signatures. Third-party security tools are also mentioned. The document concludes with examples of using containers for microservices and network policies for protection.
Container security
This document discusses container security. It outlines the advantages and disadvantages of containers, including their small footprint, fast provisioning time, and ability to enable effective microservices. However, containers also pose security risks like reduced isolation and potential for cross-container attacks. The document then examines different approaches to container security, including host-based methods using namespaces, control groups, and Linux Security Modules, as well as container-based scanning and third-party security offerings. It provides examples of configuring security controls and evaluating containers for vulnerabilities.
V brownbag sept-14-2016
Slide deck for vBrownBag (Sept 14) covering domain 3.0 (Data Security) of the AWS Solutions Architect exam objectives (associate level).
Understanding the container landscape and it associated projects
The document discusses containers and container technologies. It provides an overview of the history and key components of containers like Docker, including namespaces, control groups, AUFS, Docker images, registries, networking solutions, security concerns and orchestration tools. It also discusses how OpenStack projects are embracing containers to provide container orchestration platforms and run OpenStack services as containers to make them more scalable and efficient. The document encourages learning more about containers to stay relevant in today's technologies.
Getting over the barrier and start contributing to OpenStack
Slide deck for my presentation at the Southern California Linux Expo (SCALEx14) on how to overcome the barrier and to start contributing to OpenStack
Introduction to go
This document provides an introduction to the Go programming language. It discusses why a developer or operator may want to learn Go, including for open source projects, automation/scripting, or reading existing Go code. It then provides a brief overview of Go, describing it as a compiled, concurrent, garbage-collected language developed at Google for efficiency and scalability. The document also covers installing Go, important terminology, basic programming concepts in Go, and resources for learning more about Go.
Micro segmentation – a perfect fit for microservices
Microsegmentation, which groups network entities into segments and applies security policies to control traffic, is a perfect fit for securing microservices architectures. It allows for network-independent security policies to be defined and centrally managed at a fine-grained level, enabling policies to adapt to the dynamic and elastic nature of microservices. Major networking and security platforms like VMware NSX, Cisco ACI, and Docker's libnetwork support microsegmentation capabilities that are well-suited for microservices security through isolation, segmentation, and distributed policy enforcement.
An overview of OpenStack for the VMware community
- OpenStack is an open source cloud operating system that manages compute, storage, and networking resources. It was designed to run on commodity hardware.
- It provides infrastructure as a service (IaaS) capabilities and consists of several interconnected projects to provide services like compute (Nova), object storage (Swift), block storage (Cinder), and networking (Neutron).
- OpenStack can provide the essential characteristics of a cloud like on-demand self-service, broad network access, resource pooling, and measured service.
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This document provides an overview of OpenStack for beginners. It describes OpenStack as an open source cloud infrastructure platform that manages compute, storage, and networking resources. It outlines the main OpenStack components and projects, deployment options, ecosystem partners, considerations around enterprise readiness, use cases it can address, example companies using OpenStack, total cost of ownership factors, and ways for individuals to get started with OpenStack.
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Diese Themen werden behandelt
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Paper Link: https://eprint.iacr.org/2024/257
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VXLAN in the contemporary data center
- 1. Sept 24, 2014 Anthony Chow (@vCloudernBeer)
- 2. A contemporary data center is a virtualized data center: Server virtualization Storage virtualization Network virtualization A dynamic and agile environment. It increases demand for the network. Uses various solutions to alleviate the increase demand for the network.
- 3. • Are these the solutions? Software Defined Networking (SDN) Network Function Virtualization (NFV) Network Virtualization (NV) • IT vendor quick to claim to have a SDN solution.
- 4. A framework Separation of control and data plane Commercial SDN Controllers: Cisco - Application Policy Infrastructure Controller HP - Virtual Application Networks (VAN) Controller NEC - ProgrammableFlow PF6800 Controller Nuage Networks - Virtualized Services Controller VMware - NSX Controller
- 5. Closely related to SDN Network Services (Layer-4 to Layer-7) Firewall Load Balancer VPN IDS/IPS Run as virtual machine Dynamic network provisioning and orchestration. Service chaining
- 6. Network virtualization abstracts networking from the physical network. Provides logical isolation on a physical network Network Virtualization technologies: VLAN for Layer-2 networks VRF for Layer-3 networks Network Overlays
- 7. One form of Network Virtualization Tunnels between end points are created on existing physical networks (usually an IP infrastructure). Using existing network infrastructure. Common Types of network overlay: Virtual Extensible LAN (VXAN) Network Virtualization using Generic Encapsulation (NVGRE) Stateless Transport Tunneling (STT) Network Virtualization Overlay 3 (NVO3)
- 8. Encapsulation VTEP VNI VTEP Gateway IP Multicast
- 13. Virtual eXtensible Local Area Network (VXLAN): A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks Problems VXLAN is designed to solve Limitations Imposed by Spanning Tree and VLAN Ranges Multi-tenant Environment Inadequate Table Sizes at ToR Switch
- 14. RFC 7348 outlines the following rules for VXLAN: Each overlay is termed a VXLAN segment. Only VMs within the same VXLAN segment can communicate with each other Each VXLAN segment is identified by a 24-bit segment ID (VNI). VNI identifies the scope of the inner MAC frame originated by the individual VM VNI is an outer header that encapsulates the inner MAC frame originated by the individual VM. VXLAN segment and VXLAN overlay network are interchangeable in the RFC. VXLAN tunnels are stateless connection between 2 end points. Each end point is called a VXLAN Tunnel End Point (VTEP) VTEP can be implemented on a virtual switch, physical switch or physical server either on hardware or software. Use of data plane learning. Multicast is used for carrying unknown destination, broadcast and multicast frames (BUM traffic). VTEPs MUST NOT fragment VXLAN packets.