ODL App DevelopmentVijay Anand R

Mobile Software Trends..

Why SDN ?

SDN

Brain child of clean slate initiative.. from Stanford.. and active contributions from UC Berekley.

The current network architecture closed for innovation.

SDN is all about abstraction. Control Plane and Data Plane completely

abstracted. Control Plane now runs in a central location and

programs the forwarding elements. OpenFlow is used to program the Forwarding

Elements – rules to handle incoming traffic.

Flow Table Entries(MATCH RULES)

H E A D E R F I E L D S

AC T I O N S C O U N T E R S

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Ingress port

Source

MAC

Dest MAC

Ether

Type

VLAN ID

VLAN priorit

y

IPSRC

IPDEST

IP Protoco

l

IP TOS

TCP/UDPSRC

TCP/UDPDEST

1 2 3 4 5 6 7 8 9 10 11 12

HEADER F IELDS

12 Tup le key

Flow Table Entries(ACTIONS)

HEADER F IELDS

ACT IONS COUNTERS

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ACTIONSActions To be performed upon a matchForward out all ports except input ports (flood)Forward to group of ports (multicast)Redirect to Controller (controller packet)

Forward to local CPU (punt path)Forward to destination port (unicast routing)Drop packet (limited queueing QOS capabilities)

Flow Table Entries(Counters)

HEADER F IELDS

ACT IONS COUNTERS

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COUNTERSCounters – To keep track of stats Forward out all ports except input ports

(flood) Per Table counters (active entries, packet

lookups, packet matches) Per Flow Counters ( Received packets,

Received Bytes, Duration of the flow)

Per Queue (Transmit packets, Transmit Bytes , TX Overrun Errors)

Per Port Counters ( Received Packets, Transmit Packets, Received Bytes, Transmit Bytes, Received Drops…...

SDN Network PARADIGM

Network Virtualization

Layer

Network OS / SDN Contro l ler

APP

APP

APP

APP

Data PathForwarding

TableData Path

Forwarding Table

Data PathForwarding

Table

NETC

ON

F

ONEPK

North Bound APIs

North Bound APIs

N o r t h B o u n d A P I s

ANDROID OS

APPs

Mobile Phone

Hardware

OPEN

FLOW

ODL Controller Architecture.

ReST - REpresentational State Transfer

Its an architectural style, based on the current architecture of World Wide Web, with certain constraints.

Every resource in the web is identified by an URI.

Use traditional HTTP methods GET, PUT,POST.

Resource state represented in JSON or XML format.

https://apigee.com/console/facebook

JSON - JavaScript Object Notation

human-readable text to transmit data objects consisting of attribute–value pairs.

{"employees":[    {"firstName":"John", "lastName":"Doe"},     {"firstName":"Anna", "lastName":"Smith"},    {"firstName":"Peter", "lastName":"Jones"}]}

<employees>    <employee>        <firstName>John</firstName> <lastName>Doe</lastName>    </employee>    <employee>        <firstName>Anna</firstName> <lastName>Smith</lastName>    </employee>    <employee>        <firstName>Peter</firstName> <lastName>Jones</lastName>    </employee></employees>

Environment Setup

Java Setup apt-get install git apt-get install openjdk-7-jre apt-get install openjdk-7-jdk apt-get install maven export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-i386/

Mininet - Network, host virtualization software. git clone git://github.com/mininet/mininet mininet/util/install.sh –a

Eclipse setup - https://www.eclipse.org/downloads/ From Eclipse, go to Help => Install New Software... Paste "http://download.eclipse.org/technology/m2e/releases" into the "Work

with:" field Select m2e and (optionally) m2e - slf4j both (1.4.0 is current as of the writing of

these instructions) Click Next, OK and Finish else until things install Restart Eclipse when it asks.

Accessing, Building and Running the

Opendaylight Controller

https://wiki.opendaylight.org/view/OpenDaylight_Controller:Pulling,_Hacking,_and_Pushing_the_Code_from_the_CLI

Pulling the code. git clone https://git.opendaylight.org/gerrit/p/controller.git cd controller/opendaylight/distribution/opendaylight/ mvn clean install (uses maven build system, POM.xml is the makefile equivalent). cd target/distribution.opendaylight-osgipackage/opendaylight/ ./run.sh

Prebuild binary download wget https://jenkins.opendaylight.org/controller/job/controller-merge/lastSuccessfulBuild/artifact/

opendaylight/distribution/ opendaylight/target/distribution.opendaylight-osgipackage.zip gunzip distribution.opendaylight-osgipackage.zip cd opendaylight ./run.sh

Run mininet instances. sudo mn --controller=remote,ip=127.0.0.1 --topo=linear,2 (topology with 2 hosts and 2 switches).

Access the Controller http://localhost:8080/ Username : admin Passwd : admin

Simple REST based application

Sample Programs

Download and add the following Jars to you Project Build Path. ODL REST API reference -

https://wiki.opendaylight.org/view/OpenDaylight_Controller:REST_Reference_and_Authentication

Jersey Download Page - The sample program was built using jersey-bundle-1.18.jar jar.

https://jersey.java.net/download.html&nbsp; wget 

http://repo1.maven.org/maven2/com/sun/jersey/jersey-bundle/1.18/jersey-bundle-1.18.jar

JavaX Json Bundle Download Page - The sample program was build using javax.json-1.0.4.jar

http://mvnrepository.com/artifact/org.glassfish/javax.json wget http://

repo1.maven.org/maven2/org/glassfish/javax.json/1.0.4/javax.json-1.0.4.jarTopologyRest.java FlowMgr.java

OSGI - Open Service Gateway initiative

OSGi specification defines a component and service model for Java.

The components and services (bundles) can be dynamically installed, activated, de-activated, updated and de-installed.

Sample Applications.

https://github.com/fredhsu/odl-apps Go to the folder where the controller

code was downloaded using “git clone” cd controller/opendaylight and extract

mystats.tar.gz cd mystats mvn clean install The bundle is built in the target folder. Copy the bundle onto OSGI and verify as

in OSGI_OP.

mystats.tar.gz OSGI_op.txt