ONF SampleTap – An Educational Journey
Developing a simple OpenFlow application on OpenDaylight
© 2014 Open Networking Foundation
ONF Sample Tapping Application
•  Goals
–  Educational project to promote OpenFlow and one the most
basic OpenFlow applications – tap aggregation
•  Project Details
–  Have an experienced networking developer go through the
journey of designing and implementing a sample OpenFlow
tapping application on a popular controller
–  Capture the experiences in the series of blog posts:
•  Understanding OpenFlow and the tapping application
•  Designing a portable tapping application using OpenFlow
•  Implementation on OpenDaylight controller
–  Conduct an interactive webinar that covers the salient aspects of
the blog posts with a live demonstration of the application
Revision 1.0
© 2014 Open Networking Foundation
2
ONF Demo Tapping Application Use Cases
•  Target primary use case: tap aggregation
E.g. TOR switches, access switches
Span ports
Tap Aggregation
Revision 1.0
© 2014 Open Networking Foundation
3
Initial Design Criteria
•  Clean and extensible architecture
–  Even though non-production example application, make it easy
for others to use
•  Portable architecture
–  Limit tight dependencies on underlying controller and allow for
integration with other controller frameworks and northbound APIs
–  Use portable configuration and storage/stats mechanism
(MongoDB)
–  Flexible logging mechanism – DB, separate logs or controller
logs
•  Native integration with ODL for best experience
–  Native Java API integration with ODL controller
–  Yet allow for RESTful API integration in the future for integration
with other frameworks
Revision 1.0
© 2014 Open Networking Foundation
4
High-Level Functionality
•  Tag Aggregation
–  Ability to place match criteria on the incoming tap port, add portchains for transformation (e.g. truncation, decryption etc) and
multiple capture devices
–  Store and re-use filters, match criteria etc
Client 1
Server 1
e.g. TOR switch
Tap Port
TappAgg OF Switch
Inspector 1
Transform 1
Revision 1.0
© 2014 Open Networking Foundation
5
Inspector 2
High-Level Product Design
ONF
Sample
App
Mid-tier – UI Integration
Application Logic
Controller Integration
ODL Controller
SAL
OPF Plugin
Revision 1.0
© 2014 Open Networking Foundation
6
Persistence
Layer
UI – HTML/Javascript
Object
Database
Top Level Object Design
•  Tap Policy – association of matching rules with switches/ports and
capture devices
•  Match rule – set of matching criteria with bi-directional reflexive
matching
Tap Policy
Name
Array: Match
Rules
Array: Switches/
Ports
Port Chain
Array: Capture
Devices
Match
Rule
Name
Revision 1.0
© 2014 Open Networking Foundation
Reflexive?
Header
Fields
Source
Address
7
Dest
Address
TCP/UDP
Services
High-Level View of ONS 2014 Demo
•  Tap aggregation demo
–  Client interacts with Server over HTTP and FTP, Tap Port Mirrors
all Traffic from Server Port into Tap Aggregation Switch, which
filters out port 80 and 21 traffic into inspection port
Client 1
Server 1
e.g. TOR switch
Tap Port
Capture
Device
Revision 1.0
© 2014 Open Networking Foundation
8
TappAgg OF Switch
Thank you!
www.opennetworking.org
Revision 1.0
© 2014 Open Networking Foundation
High-Level View of ONS 2014 Demo
–  E.g. Client interacts with Server over HTTP and FTP, Tap Port
Mirrors all Traffic from Server Port into Tap Aggregation Switch,
which filters out port 80 and 21 traffic into inspection port
Client
Server
Top of Rack Switch
Tap Port
OpenFlow-enabled
Tap Aggregation Switch
Capture Device
Revision 1.0
© 2014 Open Networking Foundation
ONF SampleTap App
on ODL
10

速報！SDNの最前線とONFの取り組み - SDN Japan

Networking Basics and SDN - Undergraduate Research in

OVS

Document