The document discusses how software defined networking (SDN) can address the convergence of mobility and cloud computing. SDN allows for centralized, consistent policies across campus networks, data centers, and carriers. This enables seamless user experiences across wired and wireless access. SDN also helps provision virtual desktop infrastructure by extending policies within data centers. Several challenges to SDN adoption are mentioned, such as standards maturity and vendor interoperability. The future of SDN may include an "app store" approach using OpenFlow applications.

1. SOFTWARE DEFINED NETWORKING:
FROM CAMPUS TO CARRIER
TO CLOUD
Shehzad T. Merchant
© 2012 Extreme Networks, Inc. All rights reserved.

2. Two Major Themes: Convergence and Mobility
Ethernet
3G / 4G WLAN LAN Data Center The Cloud
Seamless User Experience
WIRED
Information
WIRELESS Content
Applications
3G / 4G
Businesses Are Being Mobilized
SDN Can Deliver High Value & Make This a Reality
2 © 2012 Extreme Networks, Inc. All rights reserved.

3. Mobility and Tenancy In the Campus
Role Internet Intranet Mail CRM/Database VLAN
Unauthenticated Yes No No No Default
Contractor Yes Yes No No Default
Employee Yes Yes Yes Yes Default
User: John
Role: Employee
Resource Access = Permit All
User: Alice
Role: Contractor
Resource Access = Deny Mail and CRM
User: Bob
Role: Unauthenticated
Resource Access = Internet Only
Page 3 © 2012 Extreme Networks, Inc. All rights reserved.

4. Mobility and Tenancy In the Data Center
VM
Role Finance Accounting
Internet Intranet Mail Engineering
CRM/Database VLAN
VLAN
VM Payroll
Unauthenticated Yes Yes No No No NoNo Default
Default
Employee
ContractorDatabase Yes No Yes Yes No NoNo Default
Default
Hypervisor Outlook
Employee Yes Yes Yes Yes Yes No
Yes Default
Default
User: John
VM: Payroll
Role: Employee
Access = Finance
Resource Access = Permit All
VM
User: Alice
VM: Employee Database
Role: Contractor
Access = HR
Resource Access = Deny Mail and CRM
Hypervisor
VM
VM: Outlook
User: Bob Employees
Access = All
Role: Unauthenticated
Resource Access = Internet Only
Page 4 © 2012 Extreme Networks, Inc. All rights reserved.

5. VDI Provisioning: The Lines Are Blurring
• Demarcation of the Access Edge no longer in the Wiring Closet
• Access edge border now extends within the Enterprise Data Center …
the “virtual wiring closet”
• That’s where Virtual Desktop Machines are located
• User sessions are now initiated within the Enterprise Data Center
Internet
“Virtual” John
User Traffic User Traffic
VDI Session
“Physical” John Access Edge Core Network Data Center Data Center
Wiring Closet ToR VM Servers
5 © 2012 Extreme Networks, Inc. All rights reserved.

6. VDI Provisioning: The Lines Are Blurring
• Controls needs to be applied at Access Edge and within the Data
Center ToR
• Identity, Roles and Mobility pervasive across Campus and DC
• Mapping Identity to Physical Desktop Machine and Virtual Desktop Machine
• Dynamic roles, policies, and identity need to be consistent
Internet
“Virtual” John
User Traffic User Traffic
VDI Session
“Physical” John Access Edge Core Network Data Center Data Center
Wiring Closet ToR VM Servers
6 © 2012 Extreme Networks, Inc. All rights reserved.

7. Enter Software Defined Networking
• De-Couple Forwarding and Policy Decisions From Network Connectivity
and Topology
• Centralized, Consistent Policy and Management Model
• Campus edge to DC server edge and into the mobile carrier edge
Ethernet
3G / 4G WLAN LAN Data Center The Cloud
Software DefinedExperience
Seamless User Networking
WIRED
Information
WIRELESS Content
Applications
3G / 4G
Businesses Are Being Mobilized
SDN Can Deliver High Value & Make This a Reality
7 © 2012 Extreme Networks, Inc. All rights reserved.

8. Where Are The Deployments?
• Mostly Early Trials
• Universities, Enterprise Campus, DC and Cloud
• Building Knowledge, Expertise and Comfort
• But, With Growing Interest…
8 © 2012 Extreme Networks, Inc. All rights reserved.

9. Challenges
• Lack of Maturity
• Standards Changing/Evolving Quickly
• Limited Silicon Support
• Vendor Commitment
• Lack Of Vendor Interoperability
• Controller, Switch, Security, Policy
• The Proverbial Departmental Divide
• Misplaced Expectations
• Demonstrable ROI v/s Existing Vendor Approach
9 © 2012 Extreme Networks, Inc. All rights reserved.

10. Technology Adoption Cycle
OpenFlow
Interest
Time
10 © 2012 Extreme Networks, Inc. All rights reserved.

11. Looking To the Future – OpenFlow App Store?
• OpenFlow becomes the Android of networking
• OpenFlow and related specifications all available as
Open Source
• Apps for every need – From QoS, to PBR, to Identity and
mobility, to multi-tenancy
• ONF becomes the Marketplace for OpenFlow Apps?
• Controller vendors eventually become application developers
11 © 2012 Extreme Networks, Inc. All rights reserved.

12. Thank you
© 2012 Extreme Networks, Inc. All rights reserved.

13. Mobility Drives the Cloud
Ethernet
3G / 4G WLAN LAN Data Center The Cloud
Seamless User Experience
WIRED
Information
WIRELESS Content
Applications
3G / 4G
Businesses Are Being Mobilized
Extreme Can Deliver High Value & Make This a Reality
13 © 2012 Extreme Networks, Inc. All rights reserved.