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지난 2013년 12월 10일 진행된 오픈플로우코리아와 Open Networking Foundation 이 공동으로 기획한 Open & Virtual Networking Conference 2013의 발표 자료입니다.
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Byungjoon Lee ([email protected])
Metro Ethernet Forum Definition– describes a set of functionalities and requirements that architectures
should support in order to fulfill the operational part of network operators
• Scalability
• Reliability
• Quality of Service (QoS)
• Service Management
In order to be applied to carrier grade networks, Openflow must be able to meet these requirements– D. Staessens et al., “Software Defined Networking: Meeting Carrier
Grade Requirements”, Local & Metropolitan Area Networks (LANMAN), 2011 18th IEEE Workshop on.
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Byungjoon Lee ([email protected])
Reliability– The control plane should be always operational
• Should be resilient against targeted attacks
• Should be recovered fast from failures
– Data plane resiliency
• Detect and recover from incidents within 50ms interval(B. Niven-Jenkins et al., “MPLS-TP requirements”, RFC 5654.)
Scalability– The control plane should provide reasonable performance
regardless of the size of underlying network
Reliability and Scalability are so closely related termsif we start to consider scale-out designs for SDN controller
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Byungjoon Lee ([email protected]) 4
http://conferences.sigcomm.org/sigcomm/2013/papers/hotsdn/p7.pdf
Byungjoon Lee ([email protected])
A Spin-off project from Floodlight
Floodlight– Openflow-based SDN Controller from BigSwitch (Open Source)– Supports Openflow 1.0 (and no further)– Adopted widely by research communities
IRIS– Yet another Openflow-based SDN Controller from ETRI – With an IO engine implemented from scratch on top of Java NIO
• 2.5 times faster than Floodlight
– Supports Openflow 1.0/1.3 • Openflow stack generator which produces codes similar to OpenflowJ
– Provides a northbound API which is fully compliant with that of Floodlight(to support 3rd party applications from various research communities)
– Focus on solving the scalability / availability issues of the centralized control
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Byungjoon Lee ([email protected]) 7
Guide various stakeholders to easily deploy their innovations to the carrier-grade networking
environment
““
Byungjoon Lee ([email protected]) 8
Tested on
– OS : Ubuntu 12.04 LTS 64bit(Kernel : 3.5.0-23-generic)
– CPU : Intel Xeon X5690 @ 3.47GHz, 6 physical core(12 threads)
– RAM : 64G
Benchmarking with
– Cbench : single core
– IRIS and Floodlight: use 5 cores
0
500000
1000000
1500000
2000000
2500000
3000000
3500000
4000000
4500000
128 256 512
Floodlight
IRIS
# of switches
# o
f flow
s
Byungjoon Lee ([email protected])
http://openiris.etri.re.kr
– Open-source IRIS
– Developer Guide (Wiki Pages)
– Integrated with GitHub
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Byungjoon Lee ([email protected])
OpenflowJ-IRIS– Automated OpenflowJ stack generator
– Also a spin-off project from Floodlight’s Loxigen
– Currently supports Openflow 1.0.1 and 1.3.2
• 1.0.1 is fully tested but 1.3.2 is now being tested and integrated(Thus, 1.3.2 is currently unstable)
– Available in the openflowgenerator branch of OpenIRIS
Loxigen– Another automated Openflow stack generator from Floodlight
– Not compliant with existing Floodlight modules
Why OpenflowJ-IRIS follows OpenflowJ code styles?– To guarantee the easy migration of existing Openflow 1.0.1 modules
to the new platform
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Byungjoon Lee ([email protected]) 11
Byungjoon Lee ([email protected]) 12
Byungjoon Lee ([email protected])
Assumptions– A (large) network is possibly split into multiple unit networks
– A unit network is managed by a controller (cluster)
Design– Scalability & Availability for a (large) unit network is
provided by a controller cluster
• A cluster consists of multiple controller instances
• All controller instances are connected by a ‘middleware’
– Interoperability between unit networks is provided by a controller hierarchy
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Byungjoon Lee ([email protected]) 14
OF
switch
SA C
ontrolle
rUnit
OpenflowNetwork
IP #1
IP #2
IRISController(Cluster)
Openflow-basedmiddleware (IRIS-HiSA)* security, reliability, scalability
Haze
lcast
Controller instance
Controller instance
Controller instance
Controller instance
Controller instance
Byungjoon Lee ([email protected]) 15
UnitOpenflowNetwork
UnitOpenflowNetwork
UnitOpenflowNetwork
Controller-to-Super ControllerCommunication channels
Controller
Network Topology
Byungjoon Lee ([email protected])
Openflow 1.3.2 support: Dec. 2013
Horizontal Scalability and High Availability for Carrier-Grade Network: Apr. 2014
Cooperation between IRIS controller clusters to guarantee end-to-end packet delivery: Dec. 2014
VTN application for IRIS is on its way to release: Apr. 2014
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