The brutal reality of SDN is that it's still coming. We've got pieces of the technology but you won't get what you need for a year, probably two. Here is why.

1. PacketPushers.net
SDN is
Tomorrows Reality
but you’ll love it when it gets here
CloudCamp
London
20130424

2. PacketPushers.Net
About Me
•Host of Packet Pushers Podcast
•“Cloud Plumber” at Canopy
Cloud Cloud Network Architect, Office of CTO ( Division of Atos )
•Blog - EtherealMind.com
•NetworkComputing.com (http://
networkcomputing.com/blogs/author/Greg-Ferro)
•Slides: speakerdeck.com/etherealmind
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3. PacketPushers.Net
What is SDN ?
•Replace the “vSwitch” with “Network
Agent”
•Build Overlay Network with tunnelling
protocols
•Replace the Network “Driver” with a
“Network Agent”
•Switch Fabric on the Motherboard.
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4. Physical Network
4

5. SDN Network
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6. PacketPushers.Net
Why SDN ?
•Software configurable networking
•Automated deployment
•Automated change
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7. PacketPushers.Net
Networking is in my way
•A Network is SINGLE SYSTEM
•every element is interconnected to
another in the LAN or WAN or both.
Rebooting a device might/could take
down the whole network
•distributed, self healing, eventual
consistency
•Shared Risk / Failure Domains
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8. PacketPushers.Net
SVR
MPLS/WAN
RTR
Internet
RTR
FWL FWL
SVR SVR
SVR SVR
SVRSVR
DC Network Today
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9. PacketPushers.Net
MPLS/WAN
RTR
Internet
FWL FWL
SVR SVR
RTR
FWL FWL FWL FWL
RTR RTRRTR
SVR SVR
FWL FWL
SVR SVRSVR SVR
SVR
Physical Network Services
Cloud Networking 9

10. PacketPushers.Net
SDN Networking
• BILLING NETWORK SERVICES
• Use XX small network appliances
instead of HA pair of physical devices
• Distribute complexity, reduce failure
impact
• more complex network design
• You MUST deploy / build automation &
monitoring to manage complexity
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11. Controller Networking
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East West LAN
Switches
Network SDN
Controller
OpenFlow
Quantum/OpenStack
Configuration Controller
Orchestration
Controller
Northbound SDN
Northbound SDN
Southbound SDN
North/South LA

12. PacketPushers.Net
Disruption Resistance
• Vendors - market disruption
• SDN moves networking services into the
“vSwitch” - process disruption
• Build an OVERLAY Network - design
disruption
• Network & Server integrated -
organisational disruption
• Technology will take 2 years to mature
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13. PacketPushers.Net
SDN Futures
•Multi Data Centre
•MPLS integration
•Physical Network integration
•QoS
•Operational Depth
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14. PacketPushers.Net
SDN Vendors
•Real Products
‣ BigSwitch Networks
‣ NEC
‣ Midokura
•“Shipping”
‣ Nuage Networks
(Alcatel/Lucent)
‣ Contrail (Juniper)
‣ VMware/Nicira
•Still Working on It
‣ Cisco (multi-product,
multi-strategy)
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15. PacketPushers.Net
About Me
•Host of Packet Pushers Podcast
•“Cloud Plumber” at Canopy
Cloud Cloud Network Architect, Office of CTO ( Division of Atos )
•Blog - EtherealMind.com
•NetworkComputing.com (http://
networkcomputing.com/blogs/author/Greg-Ferro)
•Slides: speakerdeck.com/etherealmind
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