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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.
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PacketPushers.net
SDN is Tomorrows Reality
but you’ll love it when it gets here
CloudCamp London
20130424
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
2
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.
3
Physical Network
4
SDN Network
5
PacketPushers.Net
Why SDN ?
• Software configurable networking
• Automated deployment
• Automated change
6
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
7
PacketPushers.Net
SVR
MPLS/WAN
RTR
Internet
RTR
FWL FWL
SVR SVR
SVR SVR
SVRSVR
DC Network Today8
PacketPushers.Net
MPLS/WAN
RTR
Internet
FWL FWL
SVR SVR
RTR
FWL FWL FWL FWL
RTR RTRRTR
SVR SVR
FWL FWLSVR SVRSVR SVR
SVR
Physical Network Services
Cloud Networking 9
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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Controller Networking
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East West LAN
SwitchesNetwork SDN Controller
OpenFlow
Quantum/OpenStack Configuration Controller
Orchestration Controller
Northbound SDN
Northbound SDN
Southbound SDN
North/South LAN
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
12
PacketPushers.Net
SDN Futures
•Multi Data Centre
•MPLS integration
• Physical Network integration
•QoS
•Operational Depth
13
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)
14
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
15