This document summarizes a presentation on supporting IPv6 with software defined networking (SDN) and network functions virtualization (NFV). It defines SDN as separating the control plane and data plane in networks to allow for programmable, automated configuration changes. OpenFlow is described as an SDN protocol. NFV aims to virtualize network functions to run on virtual machines. Current carrier-grade NAT (CGNAT) solutions are hardware-based, while SDN/NFV could allow for a virtualized CGNAT with benefits like dynamic load adjustment and disaster recovery. The future of networking is predicted to involve open source SDN controllers and virtual switches running on commercial and open source platforms.

1. S O L U T I O N S
c o m m Ve r eG • Hong Kong
• Bangkok
• Beijing
• Brunei
• Kuala Lumpur
• Manila
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• Seoul
• Shanghai
• Singapore
• Taipei
第20屆TWNIC IP政策資源管理暨政府
IPv6升級推動研討會
2013/7/11, Taipei
許至凱 CCIE/JNCIE
智匯亞洲有限公司
Commverge Solutions, Taiwan
IPv6 Support by SDN & NFV

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
Agenda
 Software Defined Networking (SDN)
 OpenFlow based SDN
 Network Functions Virtualization (NFV)
 SDN/NFV based IPv6 CGNAT
 Q & A

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN
 The need for rapid network configuration changes
– Cloud, virtualization and mobility are driving the need for
more dynamic networks
 SDN is aimed at giving IT managers
– A new tool to make networks programmable
– Automate policy-driven configuration changes
 SDN enables customers to have a common,
open framework for controlling the network
– Abstract vendor driven differences from hardware
functionality
What is Software Defined Networking (SDN)?

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN
 Traditional network
Traditional Network

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN
 SDN
– Separation of control and data plane
– Programmability
Software Defined Network (SDN)

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN
 Timeline

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
OpenFlow based SDN
 Two components
– OpenFlow controller
– Ethernet switch
 OpenFlow v.s. traditional forwarding
OpenFlow switch Traditional switch
Source: OpenFlow Tutorial ONS

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
OpenFlow based SDN
 OpenFlow example Controller
PC
Hardware
Layer
Software
Layer
Flow Table
MAC
src
MAC
dst
IP
Src
IP
Dst
TCP
sport
TCP
dport
Action
OpenFlow Client
**5.6.7.8*** port 1
port 4port 3port 2port 1
1.2.3.45.6.7.8
Source: OpenFlow Tutorial ONS

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
OpenFlow based SDN
 Flow Table Entries
Switch
Port
MAC
src
MAC
dst
Eth
type
VLAN
ID
IP
Src
IP
Dst
IP
Prot
L4
sport
L4
dport
Rule Action Stats
1. Forward packet to zero or more ports
2. Encapsulate and forward to controller
3. Send to normal processing pipeline
4. Modify Fields
5. Any extensions you add!
+ mask what fields to match
Packet + byte counters
VLAN
pcp
IP
ToS
Source: OpenFlow Tutorial ONS

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
NFV
 To virtualize network functions
 To be hosted on virtual machines (VMs).
 The concept, which was presented by a group of network
service providers at the SDN and OpenFlow World
Congress in October 2012
 Is being developed by the ETSI Industry Specification
Group (ISG) for Network Functions Virtualization.

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
NFV
Source: Network Function Virtulisation, Introductory White Paper

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
NFV
 NFV relationship with SDN
Source: Network Function Virtulisation, Introductory White Paper

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN/NFV based IPv6 CGNAT
 Current CGNAT
NAT Appliance

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN/NFV based IPv6 CGNAT
 CGNAT with SDN/NFV Support

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN/NFV based IPv6 CGNAT
 CGNAT with SDN/NFV Support
– Loading adjustment

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN/NFV based IPv6 CGNAT
 CGNAT with SDN/NFV Support
– Disaster recovery

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
SDN/NFV in future
 Computer/Network Comparison
Mainframe by
IBM/DEC
OS by IBM/DEC
Application by
IBM/DEC
x86
Linux/Windows
App.
Suite
Router/Switch by
Cisco/Juniper
NOS by
Cisco/Juniper
OpenFlow based
switch/NFV (h/w)
App.
Suite
Software
Project
Software
Project
OpenSource
or
Commercial
Controller
OVS/vSwitch (s/w)

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第20屆TWNIC IP政策資源管理暨政府IPv6升級推動研討會
2013/7/11, Taipei
Q & A
Thank You!