SDN網路機制...
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Wireless Networks and Evolutional Communications Laboratory SDN網路機制 於跨雲端運算之應用 陳俊良 台灣科技大學電機系
Transcript of SDN網路機制...
Wireless Networks and Evolutional Communications Laboratory
SDN網路機制 於跨雲端運算之應用
陳俊良 台灣科技大學電機系
• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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OpenFlow
Techniques: 1. Separate data and
control planes 2. Standard interface
Advantages: 1. Easy to control flow 2. Open source
Open network standard
Techniques: 1. Open networking
specification 2. Standard API
Advantages: 1. High utilization of
current devices 2. Rapidly deploying
Overlay network
Techniques: 1. Network virtualization
solution 2. Overlay technique
Advantages: 1. Connect the physical
network 2. Flexibly deploying
NFV(Network Function Virtualization)
Techniques: 1. Software-defined
functions 2. Single platform
Advantages: 1. Provide service rapidly 2. Cost down
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Service/ISP
Solution /Device Provider
Chip Provider
IC Design Software
Development End-Device Production
Operators & Service
Provider
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Intel, Broadcom, Freescale, TI, Marvell, MTK, Centec Networks…
Microsoft, IBM, VMware, Oracle, Vello…
Cisco, ALU, NEC, Juniper, HP, Dell, Ericsson, NETGEAR, Brocade, Big Switch, Extreme Networks, Hitachi, IP Infusion, Spirent, Pica 8, Huawei, ZTE…
Verizon Wireless, DT,NTT, Google, Facebook, KDDI, SK Telecom, Baidu …
Some manufacturers
provide commercial products.
Most of developers
adopt OpenFlow standard.
Some manufacturers
provide commercial products.
Google is the successful case
and Verizon field-test.
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Board Members
From: Open Networking Foundation
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Controller
Flow Table
OpenFlow Channel
Openflow
Switch
Group Table
Flow Table
OpenFlow Protocol
Pipeline
Main components of a flow entry in a flow table.
Match Fields
Priority Counters Instructions Timeouts Cookie
© 2012; The Open Networking Foundation Spec-1.3.1
git clone git://noxrepo.org/noxcore cd noxcore/ ./boot.sh mkdir build/ cd build/ ../configure --with-python=yes make make check
NOX installation and configuration commands
SDN controller
switch
control plane
data plane
OpenFlow
switch
control plane
data plane
switch
control plane
data plane
switch
control plane
data plane
SDN controller
switch
data plane
switch
data plane
switch
data plane
switch
data plane
switch
data plane
switch
data plane
OpenFlow
OpenFlow
Distributed Control Hybrid Control Centralized Control
switch
control plane
data plane
switch
control plane
data plane
switch
control plane
data plane
switch
control plane
data plane
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SDN Product Strategy Solution/Application
SDN Device
Cisco: 3560-X, 3750-X series HP: 2920, 3500, 3800, 5400,6600, 8200 series. IBM: RackSwitch G8264 NEC: ProgrammableFlow Family Brocade: CES 2000, VDX 8770, MLX series Pica8: 3290, 3295, 3780, 3920 series
Network Virtualization VMware: VMware NSX Microsoft: Hyper-V 3.0
SDN Application
BigSwitch: FloodLight Cisco: One Platform Kit (OnePK) HP: HP Open Ecosystem Google: Traffic Engineering Redware: DDoS Protection
• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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20 From: OpenDayLight
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From : Google
Google’s WAN is organized as two backbones : • I-scale network : Carries user traffic; • G-scale network : Carries traffic between datacenters. And G-scale network in which Google has deployed an OpenFlow powered SDN solution.
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Network Virtualization
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Rules
From: Cisco
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From : Data Center Journal
Attack Information
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eNodeB 3
eNodeB 1
eNodeB 2
Internet and Other IP Networks
UE 2
UE 1 SDN Switch
Middlebox
Phase1:
• SDN provides fine grained packet classification and flexible routing.
• A key factor in middlebox deployments is to balance the processing load to avoid overload.
Phase2:
SDN switch can support some middlebox functionality.
Path setup for UE by SDN controller
From :Bell Labs
• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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Products
materiality Controller’s performance
issue
Potential technical
vulnerabilities
Supplier
unclear
strategy
Few
use cases
Different manufacturers’
integration
Network equipment
replacement
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• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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Data Plane(Specialized Hardware)
Control Plane
Data Plane(Forwarding Abstraction)
Control Plane
Network OS
Controller
(NetworkOS)
Separation
a.3 single physical network
b.3 Multiple, isolated, virtual networks
Network OS
Client
Client
Server
Server
Mobiltye.g., Content Routing
Energy efficient forwarding
SDN
Languages
a.1 control and data planes tightly-coupled b.1 control and data planes separated
a.2 distributed control of network equipments
SDN
Apps
b.2 centralized, programmable control of network equipments
a. Current networking technology b. SDN networking technology
Source: Network Virtualization and Service Awareness Properties of FNs in ITU-T Q.21/SG13
Control plane and data plane separate
Centralized and programmable controller
Virtualization of the underlying network
“On-box”
Legacy SDN
Legacy Networks vs. SDN Networks
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• Packet Capture • Packet Filtering • Packet Classification • Switching/Routing
• Security • SLA • Slice • …
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Monitor and manage the devices User
Node Controller
VM
VM
VM
VM
192.168.1.3
Node Controller
VM VM
192.168.1.4
Node Controller
VM
192.168.1.5
OpenFlow Switch NOX Controller
Secure Chanel Flow Table
1. Packets Passing, Lookup, Forwarding
2. Match fields 3. Counters 4. Instructions
Mission: VM Deployed - Load Balancing
38 © 2012; The Open Networking Foundation Spec-1.3.1
Packet In Start at table 0
Match in table n?
Table miss Flow entry
exists?
Packet In Start at table 0
Update counters Execute instructions: • update action set • update packet/match set fields • update metadata
Yes
No
No
Goto- Table n?
Execute action set
No
Yes
Figure : Flowchart detailing packet flow through an OpenFlow switch.
Yes
Flowchart
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Virtual Machine Deployment Mechanism
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VM Placement Method： • Round Robin • Greedy • Network Utilization • …
Cloud Controller
Cluster Controller
Storage Controller
Walrus
Agent
Controller
Node Controller 192.168.1.5
Node Controller 192.168.1.3
VM VM
VM4 Node Controller
192.168.1.4
VM1
VM3
VM2
VM
Bottleneck
Node Controller 192.168.1.5
Node Controller 192.168.1.3
VM3
Node Controller 192.168.1.4
VM
VM
VM2 VM4
VM
VM1
Cloud Controller
Cluster Controller
Storage Controller
Walrus
Agent
Controller
• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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Inter-Cloud Computing
Cloud A Cloud B
Services Inter-Changing
Virtual Machines Dynamic Migration
Different Performance Orientation
• The link Availability becomes new performance indicator • Systems need policies implementation enabling intelligent routing
System Overview
User
1.User Request Service
3.Heavy load
2. Load analysis
4.Trigger Event 5.Request / Transmit
status 7.Redirect
Loading: CPU, Memory….
6. Light load
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SDN Operation
Balance Monitor
SLA Management
CSLA Scheduling
Resource Allocation
In-Cloud
Data Collection
Performance Analysis
Balance Trigger
Data Transmission
1. Transmit cloud status
2.Transmit the result
3. Trigger the event
4.Transmit cloud’s status &
trigger event
7.Transmit the parameters
8.Transmit the SLA information
9.Balancing the routers’ loading
5.Request the other clouds’ statuses
6.Transmit the information
If there is no appropriate route, it will trigger the event to balance trigger
Task
Sequence Diagram of Load Balancing Module
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The Concept of System Operation & Architecture
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Testbed Environment
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SDN Controller
Cloud A
Cloud D
OFS1
OFS5 OFS3
OFS4
OFS2
Cloud E
Cloud C
Cloud B
Cloud B
Schematic Diagram
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Cloud A Loading Analysis
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Cloud B Loading Analysis
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Throughput Analysis
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Link Utilization
• Introduction
• SDN Industry Overview
• SDN Development Challenge
• Cloud Computing with SDN Networking
• Inter-Cloud Computing with SDN Networking
• Conclusion
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