The document is a webinar presentation by Chuck Black of Tallac Networks, discussing the importance and applications of software-defined networking (SDN). It highlights the investment and research occurring in datacenter virtualization, WAN resiliency, load-balancing, and security measures, emphasizing that major tech companies are adopting SDN practices. Upcoming topics will cover a survey of SDN today, its applications, and details about OpenFlow technology.

1. Tallac Networks Webinar Series
Software-Defined
Networking
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2. About the Presenter
• Chuck Black, Principal Software Architect and all-
around good guy at Tallac Networks
• 30+ years experience doing
research and development in
networks, network security,
and network management
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3. SDN Intro: Part IV
SDN, Schmesh-DN. Why should I even care?
Tallac Networks Confidential

4. SDN: Nowhere to Hide
• Resistance is futile, you will be assimilated
• Billion-dollar acquisitions
• Millions of dollars of VC
• Google, VMware, even Cisco ... seems like
everybody is getting into the act
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5. SDN? Here‟s a dime…
A bit of Americana:
• Country music
• Pay phones: 10¢
• “Here’s a dime, call
someone who cares”
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6. Why should you care?
If any of these are important to you:
• Datacenter Virtualization, multi-tenancy, recovery from failures,
traffic engineering and load-balancing
• WAN/Backbone Resiliency, reliability, determinism, traffic
engineering and load-balancing
• Campus Network access control, guest access, BYOD,
hospitality networks
• Security Firewalls, intrusion detection and prevention,
blacklists, enforced quarantine
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7. Why should I care?
If you have a datacenter
• The bulk of the research being done, and of the investment being made
around SDN technology, is happening in the datacenter space.
• Why so much interest around SDN in the datacenter?
o Specific agility needs
o Specific resiliency needs
o Specific traffic engineering needs vSwitch
o Specific multi-tenancy needs
Server
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8. Why should you care?
If you have a WAN
Case Study: Google has already
implemented SDN for their WANs Data
Forwarding
Data
o COTS silicon Forwarding
o Openflow 1.0
o Failover and traffic shaping
Data
Data Forwarding
Forwarding
o So successful they are moving
datacenter networking to SDN Data Data
Forwarding Forwarding
Tallac Networks Confidential

9. Why should you care?
If your do router configuration
• Labor-intensive CLI or GUI
• Maintaining consistency among
routers
• Quickly adapting to changes Data
Forwarding
Data
and/or failures Forwarding
Data
Forwarding Data
•
Forwarding
Many of the same patterns and
issues as the datacenter
Data
Forwarding
Tallac Networks Confidential

10. Why should you care?
If you do load-balancing
• Load-balancing well-suited for SDN
o Flow-based simple routing decisions
Load Balancer
o SDN is designed to adapt quickly to changes
• Challenges for SDN
o Stateful flow needs
o Deep packet inspection needs
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11. Why should you care?
If you use firewalls
• Simple firewalls straightforward to implement
o Block/allow IP addresses Firewall
o Block/allow TCP/UDP ports
• Challenges for SDN
Firewall
o More complex firewall rules
o Deep packet inspection needs
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12. Why should you care?
If you need NAC and BYOD support
• Access control historically a messy space
• Solutions cumbersome and error-prone
• SDN and Openflow can handle NAC and BYOD:
Switch or AP
o Simple access control via Openflow
o Redirection to support BYOD
Guest
• Challenges for SDN
Employee's iPad
Company
o Flow table sizes laptops
Company iPad
o Co-existence with 802.1X
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13. Why should you care?
Take a look around...
• Because smart Google, Verizon, Facebook, Samsung, ...
companies care VMware, Oracle, Microsoft, ...
• Because your network Devices: Cisco, HP, Brocade, IBM, ...
vendor cares ASIC: Broadcom, Intel, Marvell ...
• Because people who Acquisitions: Nicera (Vmware), Vyatta (Brocade)
spend $$$$$ care Infusions: BigSwitch $12M, …
• Because smart people ONF, IETF, InCNTRE, ONRC (ON.Lab), Cal,
care Stanford, Princeton, Tsinghua, CERN ...
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14. SDN Next: Upcoming Topics
• Survey of SDN Today
Or, “A little less conversation, a little more action. Please?”
• Applications of SDN Technology
Or, “There‟s an app for that. Isn‟t there?”
• Openflow in Detail
Or, “Helping you to „Go with the flow‟.”
Tallac Networks Confidential

15. About Tallac Networks
• Consulting and training services
• SDN enterprise deployment solutions
Contact us:
o www.tallac.com
o Tallac Networks
 6528 Lonetree Blvd
 Rocklin, CA 95765
 916.757.6350
Tallac Networks Confidential

16. Tallac Networks Confidential