A session in the DevNet Zone at Cisco Live, Berlin. OpenStack is well established as the public/private cloud platform, abstracting compute, storage, and networking resources behind a unified set of APIs. OpenStack Neutron provides the lion's share of networking resources and seems sufficient for many small private cloud deployments. As scale increases and service providers with large network footprints come into the picture, new complications arise. Service provider networks have requirements and capabilities far beyond those addressable with Neutron. Software Defined Networking (SDN) and Network Function Virtualization (NFV) has given rise to modular network controllers in the service provider space. OpenDaylight is the open source world’s answer, and service providers want to be able to marry OpenStack orchestration with OpenDaylight networking, as evident by the Open Platform for Network Function Virtualization project (OPNFV). Come learn how SDN controllers fit in this context vs. OpenStack with neutron drivers, when to use one when to use the other, and the benefits and functionality of each.

2. OpenStack and OpenDaylight,
the Evolving Relationship in
Cloud Networking
Charles Eckel, Open Source Developer Evangelist

3. • Introduction
• OpenStack
• OpenDaylight
• OPNFV
• Putting it all Together
• Conclusion
Agenda

4. Photos from www.cityhyd.info and ar-ua.deviantart.com

5. OpenStack

6. OpenStack
6
• Cloud computing platform for
public/private clouds
• Abstracts data centers into
pools of resources
• Provides management layer
for efficient, automated
allocation of resources
• Empowers operators, admins,
users via self service portals
• Provides APIs to develop
cloud-aware applications

7. • Founded in Sept 2012
• Rackspace and NASA
• Apache 2.0 license
• Designed and developed in an
open collaborative fashion
• 24,000 developers
• 500 companies
• 20 million lines of code
• Releases every 6 months
• Current stable release - “Liberty”
• 12th Release
• Released October 15, 2015
• 1933 developers contributed
• 164 companies involved
• Next Release – “Mitaka”
• Scheduled release April 7, 2016
The OpenStack Community
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8. http://stackalytics.com/?release=liberty&metric=loc
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9. Extensible Software Architecture
Applications / Services
Physical and Virtualized Infrastructure
OpenStack Service APIs, SDK, CLI
Infrastructure Plugins
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Compute
Service
(Nova)
Storage
Services
(Cinder
and Swift)
Network
Service
(Neutron)
Many more
Services
Dashboard
(Horizon)
Identity
(Keystone)

10. • Create private network for your VMs
• Create router to connect to shared
public network
• Hover over the router icon to see
additional info
• Router has been assigned IP address
10.0.0.1
• Click on the private network to see
additional info
• Assigned address space 10.0.0.0/2
• Gateway IP is that of router (i.e. 10.0.0.1)
Create and Manage
Networks with Neutron
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11. 11

12. OpenDaylight

13. OpenDaylight
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• Large open source project
within Linux Foundation
• Platform for building
programmable, software-
defined networks (SDN)
• Modular, model driven
controller at core
• Northbound APIs to apps (e.g.
OpenStack)
• Southbound interfaces to
network devices (e.g. OVS)

14. The OpenDaylight Community
• Founded in February 2013
• Run by the Linux Foundation
• Eclipse Public License
• 15 founding companies donated
software and development
resources
• 600 contributors
• 2.5M lines of code
• Mostly Java
• First release “Hydrogen”
February 2014
• Releases roughly eight months
apart
• Current stable release - “Lithium”
• Released June 29, 2015
• “Lithium SR-3” update Dec 3
• Beryllium release targeted for
Q12016

15. 15
Service Abstraction Layer/Core
a.k.a. MD-SAL
Base Network Functions
- Lithium
OpenFlow Enabled
Devices
DLUX VTN
Coordinator
OpenStack
Neutron
SDNI
Wrapper
Network Applications
Orchestrations &
Services
Open vSwitches
Additional Virtual &
Physical Devices
Data Plane Elements
(Virtual Switches,
Physical Device
Interfaces)
Controller Platform
Services/Applications
OpenFlow Stats Manager
OVSDB NETCONF PCMM/CO
PS
SNBILISP BGP PCEP SNMPSXP
Southbound
Interfaces &
Protocol Plugins
OpenFlow
OpenFlow Switch Manager
USCCAPWAP OPFLEX CoAPHTTP
OpenFlow Forwarding Rules Mgr
L2 Switch
Host Tracker
Topology Processing
AAA AuthN Filter
OpenDaylight APIs REST/RESTCONF/NETCONF
Data Store (Config & Operational) Messaging (Notifications / RPCs)
LACP
Network Services
Service Function Chaining
Reservation
Virtual Private Network
Virtual Tenant Network Mgr.
Unified Secure Channel Mgr
OVSDB Neutron
Device Discovery, Identification
& Driver Management
LISP Service
DOCSIS Abstraction
SNMP4SDN
Network Abstractions
(Policy/Intent)
ALTO Protocol Manager
Network Intent Composition
Group Based Policy Service
Platform Services
Authentication, Authorization &
Accounting
Neutron Northbound
Persistence
SDN Integration Aggregator
Time Series Data RepositoryLink Aggregation Ctl Protocol

16. 16

17. OPNFV

18. OPNFV
• Open Platform for Network Function
Virtualization (OPNFV)
• Realization of ETSI NFV architecture
• Integration of open source components –
“the glue”
• Interoperable across industry partners and
usage models
• Active in upstream open source communities
• System integration as open community effort
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19. ETSI NFV Architecture
OPNFV
Focus

20. First Release - Arno

21. 21

22. Putting it all together

23. • Neutron using OVS backend and
VXLAN for tunnels
• Turn off Neutron server and
Neutron’s OVS agents on all hosts
• Clear existing OVS config and set
OpenDaylight to manage switch
• Configure Neutron to use
OpenDaylight’s ML2 driver
• OpenDaylight now creates
network endpoints for instances
and manages traffic for them
• https://wiki.opendaylight.org/view/
OpenStack_and_OpenDaylight
OpenStack Networking via OpenDaylight

24. 24

25. Conclusion

26. Open Source Dev Center
https://developer.cisco.com/opensource
•Contributions to open source
•Use in products/solutions
•Community forums, blogs
• https://communities.cisco.com/community
/developer/opensource
•Developer Events
• IETF Hackathons featuring open source
implementations of open standards
Your Source for Open Source at Cisco

27. Key Takeaways
• Neutron provides networking services for OpenStack
• Some OpenStack deployments benefit significantly from
advanced networking
• OpenDaylight can provide advanced networking for OpenStack
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28. Pros and Cons
• Pros: Support for all southbound interfaces of OpenDaylight; therefore,
work with wide range of network elements and existing deployments
• Cons: OpenDaylight, like OpenStack, is complex to install and operate,
documentation is not always accurate and up to date
 Pros and Cons of using a large, rapidly developing open source project
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29. Thank you

31. Extras

32. OPNFV Sandbox using Fuel
• Fuel is open source deployment and
management tool for
• DevNet Sandbox uses Fuel to deploy a
virtual topology that emulates bare-metal
deployment
• Instantiate KVM VMs without OS
• Fuel guest installs and configure VMs
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33. Fast Data Project - FD.io
• Collaborative open source project in
Linux Foundation
• High performance I/O services
framework for dynamic computing
• User space I/O services framework
• Hardware, kernel, and deployment
(bare metal, VM, container) agnostic
• 6WIND, Brocade, Cavium, Cisco,
Comcast, Ericsson, Huawei, Inocybe,
Intel, Mesosphere, Project Calico
(Metaswitch), PLUMgrid, Red Hat
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