1. HUAWEI TECHNOLOGIES CO., LTD.
Security Level:
www.huawei.com
Role of SDN Controllers in
OpenStack
Author/ Email: Vikram Choudhary (Huawei)
Numan Siddique (RedHat)
2. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential 2
What’s there in the plate?
Background preparation
SDN Controllers
OpenStack
Neutron
SDN Controller’s & Openstack: Big Picture
SDN controller’s for Openstack
OpenDaylight
OpenContrail
Open Networking Operating System
Many more…
How to become part of OpenStack?
Q/A
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What is a SDN Controller?
An SDN controller is an application in
software-defined networking (SDN)
that manages flow control to enable
intelligent networking.
SDN controllers are based on
protocols, such as OpenFlow, that
allow servers to tell switches where
to send packets.
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Word about OpenStack
o OpenStack can be considered to
be not one project but several,
consisting of compute, storage
and networking.
o All three platform components
are managed by a dashboard
Web application.
o Combined, they can provide a
complete cloud network
operating system.
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OpenStack module to talk about: Neutron
o Neutron was introduced to treat
networking as a separate service.
o Can run as an autonomous service,
exposes APIs with different
vendors, provides implementations
by appropriate extensions.
o In short, neutron is NOT SDN, but
in theory can transform anything
into SDN, Just provide a plug-in for
it.
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OpenStack Neutron, with its plug-in architecture, provides the ability to integrate SDN
controllers into the OpenStack. provides centralized management, and facilitates the
network programmability using APIs.
OpenStack is relatively mature and is in use in production environments worldwide.
This enables organizations to take advantage of the network orchestration feature
without necessarily deploying a full-blown controller-led SDN solution.
Different integration options:
Completely eliminate RPC communications between the Neutron server and agents on the
compute node, with the SDN controller being the sole entity managing the network.
SDN controller manages only the physical switches, and the virtual switches can
be managed from the Neutron server directly.
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OpenDaylight is integrated with Openstack via a Neutron plug-in.
Plug-in moves the complexity up the stack from OpenStack to OpenDaylight.
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Status in Openstack:
ODL ML2 driver available in Icehouse release
• Supports VXLAN and GRE
• Devstack
• Focus on core Neutron Functionality, still use DHCP, L3 Agents
ODL ML2 in Kilo (current)
• Changed auth to basic auth
• Vendor decomposition – networking-odl in OpenStack big tent
• Added support for L3 Service, FWaaS, LBaaS
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The OpenContrail Controller is a logically centralized but
physically distributed Software Defined Networking (SDN)
controller that is responsible for providing
Management
Control, and
Analytics functions of the virtualized network.
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OpenContrail is integrated with Openstack via a Neutron plug-in.
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Status in Openstack:
ODL ML2 driver available
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A new carrier-grade SDN network
operating system designed for
high availability
performance
scale-out.
Mission: “to produce the Open Source
Network Operating System that will
enable service providers to build real
Software Defined Network”
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Status in Openstack:
Just arrived
Work in Progress
o https://bugs.launchpad.net/networking-onos/+bug/1474240
o https://github.com/openstack/networking-onos
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Inputs for new SDN controller’s for
joining the party!