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OpenStack Quantum Network Service


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Quantum is an OpenStack project to provide network connectivity as a service between interface devices. It will enable cloud tenants to create rich networking topologies, build advanced network services and innovative network capabilities.

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OpenStack Quantum Network Service

  1. 1. Quantum:What it is and Where it’s going Lew Tucker VP/CTO Cloud Computing Cisco Systems, Inc. @lewtucker
  2. 2. + Quantum• OpenStack: open source software for building highly scalable public and private clouds• Designed as a set of services forming the basis of a cloud platform• Evolving through community process in which all members may contribute• Quantum is a community project to build a “Network Service” for advanced networking capabilities
  3. 3. Open Source Is Where “Standard” Cloud Infrastructure Will Be Defined Open standards [require] multiple providers, access to code and data, and interoperability of services. The obvious solution is an open source reference model as the standard. Potential examples of such would be the OpenStack effort. -Simon Wardley, CSC From “A Question of Standards”
  4. 4. Current Cloud Computing model is great for application development, self-service,and automation, but is missing the potential programmability of the infrastructure I’m a Cloud. But I can help I don’t need (sigh) you! • Applications and infrastructure could interact with each other to provide the best performance, experience and reliability • What is missing is the right mechanism to expose networking infrastructure capabilities without bringing all the complexity into the application layer
  5. 5. Network Technologies in the Data Center and InternetApplication Virtual Storage IP NGN VSwitch Compute Access Aggregation Core Peering Software Machine and SAN Backbone App App OS App OS OS Virtual Device Contexts Let’s abstract all this Fabric-Hosted App App OS Storage Virtualization Firewall Services Virtual Device Internet App OS Contexts OS App Storage Media Secure Domain App App OS Encryption Routing OS OS IP NGN Service Profiles Port Profiles and Virtual Machine VN-Link Optimization Global Site Line-Rate Fibre Channel Selection NetFlow Forwarding Partners Port Profiles and Intrusion VN-Link Detection App Fabric Extension App App OS Application OS OS Control (SLB+) 10G Ethernet 10G FCoE Service Control 4G FC App 1G Ethernet App App OS OS Virtual Contexts VM to vSwitch OS for FW and SLB vSwitch to HW App to HW / VM Applications VMWare Nexus 1000v MDS 9000 + UCS, MCS 7800 Nexus 5000 Nexus 7000 Nexus 7000 CRS-1 CRS-1 Xen Consolidated (or Generic w/ Nexus 2000 (w/ Cat 6500 7600 ASR 9000 Hyper-V Storage Arrays Rack or Fabric Extender as Services 6500 ASR 1000 (EMC, etc.) Blade Servers) Chassis) 7600
  6. 6.  Compute service (EC2): virtual machines App Svr - Specify vCPU, Memory, Disk OS - Launch instance (image, mem_size, disk) VM - Suspend, clone, migrate Storage service (S3, EBS): virtual disks - Specify storage amount, access rights - Store object - Create/attach block Networking• What to do about networks?
  7. 7. Nova and Swift API Networking is embedded inside of Nova compute, and Nova Swift un-accessible to applicationCompute Storage developersService Service Details and differences Virtual associated with networkMachines Object Store provisioning complicates a simple compute service Servers Disks Difficult to track changes in Basic Network Connectivity networking as Software- defined Networking (SDN) comes into play
  8. 8. Nova, Swift, and Quantum API Nova becomes simpler, easier to Nova Quantum Swift maintain and extendCompute Service StorageService Service Developers have ability to create multiple networks for their own Virtual Virtual purposes (multi-tier apps)Machines Networks Object Store May support provisioning of bothServers Networks Disks virtual and physical networks – differences captured through Basic Network Connectivity plugin’s
  9. 9.  Servers are virtualized through partitioning Storage through aggregation Networks through slicing/tunnels/tagging… Networks are a shared resource carrying traffic for all tenants across shared links Network overlays and virtualization create private networks through tagging, routing, encapsulation (tunneling), and separation of control (openflow, etc.) - VLANS, NVGRE, VXLAN, STT, LISP Quantum is designed to support private networks
  10. 10. 2011 Design Summit - community-driven merger of proposals … and others NetworkService NetworkServicePOC NaaS Core Design NetworkContainers Citrix/Rackspace/Nicir NTT/Midokura Intel Cisco a Quantum
  11. 11.  Compute service (EC2): virtual machines - Launch instance (image, mem_size, disk) App Svr OS - Suspend, clone, migrate VM Storage service (S3, EBS): virtual storage - Store object - Create/attach block App Svr App Svr Network service (Quantum): virtual networks OS VM OS VM - Create/delete private network - Create “ports” and attach VM’s - Assign IP address blocks (DHCP)
  12. 12. POST /v1.1/tenants/abc/networks.jsonRequest:{ “network”: { “name”:”my_db_network” }}Response:{ “network”: { “id”: “98bd8391-199f-4440-824d-8659e4906786” }}
  13. 13. My Private Network
  14. 14.  Create multiple, virtual, isolated networks per tenant (FE-Net, DB-Net) Multiple network interfaces per VM (in-line services) Create ports on networks (QoS, profiles) and attach VM’s Have control over your own “private” IP addresses Access through a user-friendly CLI and GUI (Horizon) Invoke additional capabilities through extensions Support different underlying networking implementations (VLANS, L2/L3 tunnels, etc.)
  15. 15. Quantum API API Extensions: For controlled innovation and experimentation Quantum Service• Network abstraction definition and management• Does NOT do any actual implementation of abstraction Quantum Plug-in API Vendor/User Plug-In• Maps abstraction to implementation on physical network• Can provide additional features through API extensions
  16. 16. User Application – CLI - Horizon Dashboard - Tools Tenant API Tenant APICompute Network ServiceService Internal API (Quantum) Admin API System (Nova) Admin Plug-In Compute Node Physical Clustered Network Hypervisor vSwitch Network Router/Switch Controller
  17. 17.  Open vSwitch Linux bridge Nicira NVP Cisco (Nexus switches and UCS VM-FEX) - WIP: VXLAN NTT Labs Ryu OpenFlow controller NEC OpenFlow Big Switch Floodlight
  18. 18.  Keep it simple - hide complexity while exposing capabilities Provision their own, abstracted networking resources and topologies Potential to create their own networking services Isolation and non-interference Ability to experiment while leveraging all that is provided by lower-level protocols
  19. 19. Different tenants and applications have different needs Tenant “B” Tenant “A” App App Web Svr Web Svr Web Svr OS OS OS OS OS VM VM VM VM VM DataBase OS App Svr App Svr MemCach MemCach VM OS OS OS OS VM VM VM VM Tenant “C” DataBase DataBase App DataBase OS OS OS OS VM VM VM VM Internet Access, Management NetworkInternet and Multi-tenant Services VPNGateway Service Provider Network Service
  20. 20.  Quantum 1.0 is available today for Essex as an incubation project - Supports isolated L2 networks - Multiple plug-in’s available Folsom release – moving into Core - Quantum V2 API (in development) - Support tenant-created subnets - Integrated with Horizon (dashboard) and Keystone (identity/token/policy) - Includes “Melange” IPAM for IP address management - Includes DHCP/Dnsmasq functionality
  21. 21. POST /v2.0/subnetsRequest:{ "network_id": "98bd8391-…", "cidr": "",}Response{ "id": "e76a23fe-…", "network_id": "98bd8391-..", "cidr": "", "gateway_ip": "", "dns_nameservers": [""], "reserved_ranges": [ { "start" : "", "end": ""}, { "start": "", "end" : ""}], "additional_host_routes": [],}
  22. 22. 3
  23. 23. Purposely started simple with basic abstraction, but with many blueprintsexpect to see rapid innovation, while maintaining backward compatibility  More plug-in’s for other networking paradigms  Extensions for QoS, port profiles, etc.  Used in the development of new network services  Applied to create virtual data centers spanning multiple sites  New uses in network service provider networks, mobile networks, sensor networks, HPC networks
  24. 24.  Quantum API Quantum Network Service - Quantum Admin Guide (Essex): - Code on Github: - Quantum V2: - Lew Tucker, Cisco Systems @lewtucker