1. OpenFlow Stanford
University / Ericsson
Collaboration
Mobile World Congress 2013

2. Openflow & Sdn
A A A Application Application Application
p
p
p
p
p
p
Well-defined
open API
Operating
System
Specialized Packet Network Operating System
Forwarding
Hardware
Data Plane
Open interface to forwarding
A A A A A A (L1/L2/L3) such as Openflow Separation of
p p p p p p
p p p p p p
Data and
Operating Operating Simple Packet ControlPlane
System System Forwarding Hardware
Specialized Packet Specialized Packet
Forwarding Forwarding
Hardware Hardware
Simple Packet Simple Packet
Forwarding Hardware Forwarding Hardware
A A A
p p p
p p p
Operating
System Simple Packet
Forwarding Hardware
Specialized Packet
Forwarding
Hardware
In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 2

3. Open Network research
contributions
Problem to solve Ericsson Research Stanford Research Objectives
› SDN architecture and › Scalable and reliable › Statical analysis and › Evaluate different
design Service Provider SDN dynamic design choices
› New features added architecture troubleshooting › Improve network
to existing protocols › Inline service chaining › SDN for Home performance
and traffic steering as a networks
› New applications built › Leverage the SDN
new SDN application
on top of SDN › Connectivity platform for new
› Integration of Cloud and management on applications
Service Provider SDN mobile devices
controller platforms
Ericsson is a founding member of Open Networking Research Center (ONRC)
In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 3

4. Inline service chaining
and traffic steering
› Service chain: An ordered list of services (NAT, firewall, DPI, etc.)
› Dynamically derived from subscriber, application, and service ordering policies
› Unidirectional: different upstream and downstream service paths Service Path 1 (Upstream)
Service Path 2 (Downstream)
› Multiple service paths per subscriber Service Path 3 (Voice)
Service Path 4 (Video)
SERVICE SERVICE SERVICE
A A A
BNG SERVICE ROUTER
A
SERVICE SERVICE
A A In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 4

5. Controller-Switch
Connectivity
› Controller placement for
Internet2 3SOE Deployment
− Maximum resiliency
(Ericsson Research)
− Minimum average delay
(Stanford University)
› Optimizing control traffic
routing for combined
resiliency-delay metric
› Network partitioning: switch
to controller assignment for
maximum resiliency
Controller location for minimum average delay
Controller location for maximum resiliency
In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 5

6. Elastic Networking
for OpenStack
SITE A SITE B
SWIFT NOVA QUANTUM
INTERNAL
› Connectivity and bandwidth NETWORKING
AGENT
on demand SWIFT NOVA QUANTUM ELASTIC
NETWORKING
− Cloud – Cloud INTERNAL API
− Cloud – Enterprise GW
INTERNAL
NETWORKING
› Simple, customer usable API AGENT
SITE C (e.g. Enterpise)
− Reduces operator INTERNAL NETWORKING AGENT
management overhead GW
• Tight integration with GW
OpenStack Quantum data
center networking Applications
− End to End, Data Center to Disaster Recovery Enterprice VoIP in the Cloud
WAN to X, virtual networking
Remote Backup and Replication Streaming Video with SLAs
In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 6

7. Ericsson OPENFLOW/SDN
RESEARCH in next steps
Application Application Application Service Exposure
Well-defined
open API
Network Operating System
Data Plane Network and Cloud Management
Open interface to forwarding
(L1/L2/L3) such as Openflow Separation of
Data and
Simple Packet ControlPlane
Forwarding Hardware
Simple Packet
Simple Packet
Forwarding Hardware Forwarding Hardware Integrated Network Control
Telco
Simple Packet Data
Forwarding Hardware
Center
In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 7

8. Ericsson OPENFLOW/SDN
RESEARCH in next steps
Service Exposure
Network and Cloud Management
Integrated Network Control
Telco
Data
Center
OpenFlow/SDN In collaboration with:
Mobile World Congress 2013 | © Ericsson AB 2013 | 2013-02-25 | Page 8

10. Overview
Users Network Operators Content Providers
Leverage Programmable Networks and SDN to :
1. Improve User Experience 2. Improve Network Operation

11. Putting Users in Charge of their Network
Content
ISP Provider
Policy
Makers
Myth 1 : Dumb Users User Agents
• Preferences • Capture User Preferences & Feedback
• Current experience • Translate into Network Semantics
• Context • Communicate to ISP
Myth 2 : Too Complex ISPs
• Queues / User easy • Configure network, paths, queues
• SDN • Expose Network Interface

12. Hercules –
Making use of all networks around us
Google Netflix Google Netflix
Data CDN
Center
•OpenFlow switch
•Scheduling

13. Header Space Analysis
Network State:
Topology, Configs, T1(h,p) T2(h,p)
Forwarding Tables, etc.
HSA Parser
T3(h,p)
Real Network Model of Network
Simple and Protocol Agnostic
Abstraction of Forwarding
Functionality.
Network Debugging: Real Time Policy Checking for Network Monitoring:
Checking Reachability, SDNs: Automatic Test Packet
Finding Forwarding Loops, Detect violating changes before Generation with Maximum
etc. they hit the data plane Coverage

14. Easier network troubleshooting using Packet Histories
Network Admin Network
NetSight
Questions Answers
“Host A can’t talk to Host B. NetSight returns Packet Histories, which provide direct
Show me where packets from A to B are going and why.” evidence to troubleshoot networks.
“Some hosts are failing to grab IP addresses. Show me all
DHCP traffic. packet [MAC src: 0x123, ...]:
switch 1: { in/out port:
mods:
switch state:
matched rules:
switch 2: { …
Packet History: the full path, modifications, and headers
encountered during a packet’s journey through the network.