VMworld 2013: An Introduction to Network Virtualization
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The document discusses network virtualization and VMware NSX. It begins with an agenda that covers objectives, network virtualization, NSX system architecture and use cases. It then discusses what network virtualization is, how it abstracts and automates the network. The NSX architecture uses Open vSwitch and tunnels traffic between virtual networks. Key use cases include automated provisioning and cross-datacenter connectivity. Physical and logical relationships are illustrated on a whiteboard. Takeaways focus on the benefits of network virtualization in building scalable software-defined datacenters.
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VMworld 2013: An Introduction to Network Virtualization
- 1. An Introduction to Network Virtualization Thomas Kraus, VMware Eric Lopez, VMware NET5516 #NET5516
- 2. 2 Agenda Objectives Network Virtualization VMware NSX • System Architecture • Use Cases Whiteboard Conclusion
- 3. 3 Session Objectives •Discuss what Network Virtualization is and what the technical and business benefits are. •Provide foundational knowledge on NSX architecture and system components. •Illustrate the flow of data communication between two hypervisors in an NSX environment. •Illustrate the relationships between physical and logical components in an NSX deployment
- 4. 4 Agenda Objectives Network Virtualization VMware NSX • System Architecture • Use Cases Whiteboard Conclusion
- 5. 5 Forces Driving Change What do cloud consumers want? The ability to deploy applications at scale and with little pre-planning provisioning speed and efficiency The mobility to move workloads between different geographies and providers investment protection and choice The flexibility to create more diverse architectures in a self service manner rich L3 – L7 network services
- 6. 6 The Software Defined Data Center Physical Infrastructure Software Defined Data Center TwoSoftware Defined Data Center One Infrastructure Abstraction Layer
- 7. 7 Compute Virtualization Abstraction Layer The Network Is a Barrier to Software Defined Data Center Physical Infrastructure • Provisioning is slow • Placement is limited • Mobility is limited • Hardware dependent • Operationally intensive Software Defined Data Center One
- 8. 8 The Solution – Virtualize the Network Physical Infrastructure Compute Virtualization Abstraction Layer • Programmatic provisioning • Place any workload anywhere • Move any workload anywhere • Decoupled from hardware • Operationally efficient Network Virtualization Abstraction Layer Software Defined Data Center One • Provisioning is slow • Placement is limited • Mobility is limited • Hardware dependent • Operationally intensive
- 9. 9 What Is a Virtual Network? General Purpose Server Hardware Server Hypervisor Requirement: x86 Virtual Machine Virtual Machine Virtual Machine Application Application Application x86 Environment Decoupled Hardware Software General Purpose Networking Hardware Network Hypervisor Requirement: IP Transport Virtual Network Virtual Network Virtual Network Workload Workload Workload L2, L3, L4-7 Network Services
- 10. 10 Network Virtualization Must… 1. Decouple Physical Virtual 2. Reproduce 3. Automate Network Operations Cloud Operations Hardware independence Operational benefits of virtualization No change to network from end host perspective Virtual Physical
- 11. 11 Agenda Objectives Network Virtualization VMware NSX • System Architecture • Use Cases Whiteboard Conclusion
- 12. 12 VMware NSX NSX API Data Plane • Leverages programmatic web-services API to define logical networks • Single point of configuration & management for the system, across 1,000s of edge switching devices Controller Cluster OVS / NVS NSX Manager • Clustered App runs on x86 servers • Controls & manages 1,000s of edge switching devices • Does not sit in data path • Open vSwitch(OVS) is a VMware led open source project • NSX vSwitch(NVS) is a software vSwitch in ESXi kernel • Switch software designed for remote control and tunneling installed in Hypervisors, NSX Gateways or HW VTEP devices Management Plane Control Plane
- 13. 13 L2 L3 Virtual Network L2 Open vSwitch NSX Gateway VMware NSX - How it works VMVM vSphere vSphere KVM XenServer vSwitch vSwitch vSwitch vSwitch HW SW Controller Cluster API VLAN NSX Manager HW Partner VTEP Device CMP VLAN VLAN
- 14. 14 NSX Tunneling – Overlay Networks NSX Controller Cluster establishes an overlay network Multiple tunneling protocols including STT, GRE, VXLAN Packets encapsulated with Logical Switch info PayloadIPL2PayloadIPL2 L2 IP TCP STT PayloadIPL2 L2 IP TCP STT PayloadIPL2 VM VMVM VM Open vSwitch / NVS Physical Network Hypervisor
- 15. 15 Where Are Virtual Networks? Hypervisor Hypervisor Hypervisor Hypervisor Open vSwitch Open vSwitch Open vSwitch Open vSwitch VM VM VMVM VMVM VM VM VM VM VM VM VM VM Virtual Network Virtual Network Logical Network State Transport Network State & Controller Cluster
- 16. 16 Agenda Objectives Network Virtualization VMware NSX • System Architecture • Use Cases Whiteboard Conclusion
- 17. 17 PhysicalNetwork Gen 2 or SP Cloud Cloud HV1 Cloud HV2 Cloud HV3 Logical Network Top Use Cases LAN WAN MAN VLAN 9 L2 Gateway Remote Datacenter/Pod 64.10.10.11 VM VM VM VM VM Logical L2 Switch VLAN 9 VM VM VMVM 1. Automated Network Provisioning 2. Inter Rack or Inter DC Connectivity 3. P-to-V and V-to-V Migration 4. Burst or Migrate Enterprise to Cloud VM VM VM
- 18. 18 Agenda Objectives Network Virtualization VMware NSX • System Architecture • Use Cases Whiteboard Conclusion
- 19. 19 Whiteboard Session – Physical Hypervisor HV1 E3E2E1E0 IP Fabric HV2 E0E1E2E3 ESXi KVM Cust B VM2 Cust A VM2 Cust B VM1 Cust A VM1 172.16.20.11 172.16.30.11 192.168.1.11 192.168.1.11 192.168.1.12 192.168.1.12 NSX Controller Cluster NSX vSwitch Open vSwitch
- 20. 21 Gateway Services - Component Relationships Transport Network Management Network WAN Customer Network Customer Network Logical Switch 2 Logical Switch 3 Logical Switch 1 CA-VM1 CA-VM2 CB-VM1 CB-VM2 CB-VM3 WAN CB-BM1 CB-BM1 Virtual Network Physical Network NSX Gateway NSX Gateway NSX OVS CA VM2 CB VM2 Hypervisor NSX OVS CA VM2 CB VM2 Hypervisor CB VM3 Customer A Logical Router Customer B Logical Router L2 GWS L3 GWS
- 21. 22 Session Takeaways Network Virtualization is the key to building a distributed, highly scalable, and feature rich Software Defined Datacenter. Most tunneling mechanisms or protocols are similar in function and are only ONE component of Network Virtualization. A viable Network Virtualization solution HAS to provide a minimum set of functionality. • Abstraction – Decoupling of Guest Virtual Machines from Physical Network especially from an addressing perspective. • Reproduction – Ability for a Guest Virtual Machine to operate without knowing its leveraging Network Virtualization. • Automation - A RESTful API for Network Virtualization and an Orchestration or Automation tool that can programmatically integrate with Compute and Network Virtualization Layer.
- 22. 23 Recommended Sessions & Labs NET5184 - Designing Your Next Generation Datacenter for Network Virtualization NET5716 – Advanced NSX Architecture NET5266 – Bringing Network Virtualization to VMware Environments with NSX NET5270 – Virtualized Network Services Model with NSX SEC5582 – Multi-site Deployments with VMware NSX You can actually build the configuration demonstrated in the whiteboard in the lab HOL-SDC-1319 Visit us at the VMware booth to see NSX in action Follow us on Twitter and tell us what you thought • Tkrausjr • #NET5516
- 23. THANK YOU
- 25. An Introduction to Network Virtualization Thomas Kraus, VMware Eric Lopez, VMware NET5516 #NET5516
- 26. 27 Backup Slides