OpenDayLight + Mininet · 2019-03-06 · • odl-dlux-all: OpenDaylight graphical user interface...

NATIONAL & KAPODISTRIAN UNIVERSITY OF ATHENS


Nancy [email protected]

Panagiotis [email protected]

OpenDayLight + Mininet

mailto:[email protected]

mailto:[email protected]


What is OpenDayLight

http://scan.di.uoa.gr | | 3/20/2017

The Open Daylight Project is a collaborative open source project that

aims to accelerate adoption of Software-Defined Networking (SDN) and

create a solid foundation for Network Functions Virtualization (NFV) for

a more transparent approach that fosters new innovation and reduces

risk. Founded by industry leaders and open to all, the OpenDaylight

community is developing a common, open SDN framework consistingof code and blueprints.


OpenDaylight Project


Multi-company collaboration under Linux foundation

Many Projects including OpenDaylight Controller

NO-OpenFlow (Not Only OpenFlow): Supports multiple southbound protocols via plug-ins including OpenFlow

Dynamically linked in to a Service Abstraction Layer(SAL) Abstraction: SAL figures out how to fulfill the service

requested by higher layers irrespective of the southbound protocol

Modular design using the OSGi framework

A rich set of North-bound APIs via RESTful services for loosely coupled applications and OSGi services for co-located applications using the same address space


OpenDaylight Releases


Hydrogen – February 2014

Hellium – October 2014

Lithium – June 2015

Beryllium – February 2016

Boron – November 2016

Includes improvements to several projects such as OpenFlow, OVSDB, FD.io (VPP)

OpenStack-related capabilities have been re-architected within a unified development framework for better scalability and performance, including clustering and persistence


BORON Architecture



ODL – High-Level Architecture


The SAL figures out how to fulfill the requested service irrespective of the underlying protocol used between the Controller and the network devices


ODL – SAL


• Service Abstraction Layer is at the heart of the modular design of the Controller and allows it to support multiple protocols on the Southbound and providing consistent services for modules and Apps


ODL – SAL


Southbound plugins provide portions of the overall network model tree


OpenDaylight AD-SAL vs MD SAL


API-Drivel SAL Model-Drivel SALThe MD-SAL allows both the

NB plugins and SB plugins to

use the same API generated

from a model

NB SAL APIs used by applications

are mapped 1:1 onto SB Plugin

APIs (programmer needs to write

2 APIs)

Provider

Consumer

Notifications RPCs


ODL – MVC Platform


MODEL

VIEW

CONTROL

YANG• Model for data, RPC

and notifications

• Used in MD-SAL

architecture

REST API• View self-generated

and accessible

through NB (AD-

SAL) OR RESTconf

(MD-SAL)

Java Code• Handle data

changes, RPC

callbacks


A new SB plugin: SNMP4SDN


Control off-the-shelf commodity Ethernet switches

Build SDN using Ethernet switches

Flow configuration can be installed on forwarding tables, ACL and VLAN table. Achieved by SNMP and CLI in SNMP4SDN

Switch discovery is achieved via SNMP trap sent from the switch

Topology discovery is resolved by reading LLDP data on the switches


HL SNMP4SDN Architecture



SNMP4SDN Architecture and Interaction among the modules



SNMP4SDN: Switch Discovery


Source:

https://wiki.opendaylight.org/view/SNMP4SD

N:Architecture_and_Design

https://wiki.opendaylight.org/view/SNMP4SDN:Architecture_and_Design


Installing OpenDayLight


Prerequisites:

Ubuntu 14.04 64bit or newer

1x CPUs (minimum)

2x CPUs (recommended minimum)

2GB RAM (minimum)

4GB RAM (recommended minimum)

Java 8

Maven


Installing OpenDayLight (cont.)


1. Installing Java

1. sudo add-apt-repository ppa:webupd8team/java

2. sudo apt update; sudo apt install oracle-java8-installer

3. javac -version (to check if the correct version was installed)

4. sudo apt install oracle-java8-set-default

5. sudo nano /etc/environment

1. Add: JAVA_HOME="/usr/lib/jvm/default-java"

6. source /etc/environment

7. echo $JAVA_HOME (to check if the change was kept)

8. Usually most linux systems source /etc/environment by default. If your system doesn't do that add the following line to ~/.bashrc

1. source /etc/environment




2. Installing Maven

1. sudo apt-get install maven

3. Installing ODL

1. Download ODL from official site ( https://www.opendaylight.org/downloads ) - It has been tested with the Boron Release

1. wget https://nexus.opendaylight.org/content/repositories/public/org/opendaylight/integration/distribution-karaf/0.5.4-Boron-SR4/distribution-karaf-0.5.4-Boron-SR4.zip

2. unzip ./distribution-karaf-0.5.4-Boron-SR4.zip

3. cd ./distribution-karaf-0.5.4-Boron-SR4

https://nexus.opendaylight.org/content/repositories/public/org/opendaylight/integration/distribution-karaf/0.5.4-Boron-SR4/distribution-karaf-0.5.4-Boron-SR4.zip




3. Installing ODL

1. Run ODL1. ./bin/karaf –of13 (of13 is used to enable OpenFlow Control v1.3)

2. Inside odl we install some basic features with command:

1. feature:install odl-dlux-all odl-l2switch-switch odl-restconf odl-mdsal-apidocs

• odl-dlux-all: OpenDaylight graphical user interface

• odl-l2switch-switch: Provides network functionality similar to an Ethernet switch

• odl-restconf: Allows access to RESTCONF API

• odl-mdsal-apidocs: Allows access to Yang API


Installing Mininet


Prerequisites:

Ubuntu Server 14.04 LTS or newer

1x CPUs (minimum)

1GB RAM (minimum)

Git


Installing Mininet (cont.)


1. git clone git://github.com/mininet/mininet

2. cd mininet3. git tag # list available versions4. git checkout -b 2.2.2 2.2.2 # or whatever version you wish to

install5. cd ..6. mininet/util/install.sh

Typical install.sh options include:1. -a: install everything that is included in the Mininet VM, including

dependencies like Open vSwitch as well the additions like the OpenFlowwireshark dissector and POX. By default these tools will be built in directories created in your home directory.

2. -nfv: install Mininet, the OpenFlow reference switch, and Open vSwitch3. -s mydir: use this option before other options to place source/build trees

in a specified directory rather than in your home directory.


Installing Mininet (cont.)


7. mininet/util/install.sh –a (we use this option)

8. After installation we test it by running

sudo mn --test pingall

Another way is to download the VM image from https://github.com/mininet/mininet/releases/download/2.2.2/mininet-2.2.2-170321-ubuntu-14.04.4-server-amd64.zip, which includes everything mininet needs

https://github.com/mininet/mininet/releases/download/2.2.2/mininet-2.2.2-170321-ubuntu-14.04.4-server-amd64.zip


OpenDayLight GUI



OpenDayLight GUI (cont.)


Topology




Nodes




Yang UI


Mininet command line tool and CLIdemo


# mn

# mn --topo tree,depth=3,fanout=3 --link=tc,bw=10

mininet> xterm h1 h2

h1# wireshark &

h2# python -m SimpleHTTPServer 80 &

h1# firefox &

# mn --topo linear,100

# mn --custom custom.py --topo mytopo


Mininet API basics



Performance modeling in Mininet



Mininet command line tool


# sudo ovs-ofctl -O OpenFlow13 dump-flows s1

Print the flows of switch s1

#sudo ovs-ofctl -O OpenFlow13 del-flows s1

Delete the flows of switch s1

# sudo mn --topo single,2 --mac --switch

ovsk,protocols=OpenFlow13 --controller

remote,ip=<controller ip>

• --topo points to the topology we need to load

• --mac simple form of MAC addresses




option dict name key: value

--topo topos 'short name':Topo constructor

--switch switches 'short name': Switch constructor

--host hosts 'short name': Host constructor

--controller controllers 'short name': Controller constructor

--link links 'short name': Link constructor

--test test'short name': test function to call with

Mininet object




• --link=tc (needs mininet.link import TCLink in

our topology file)

• --host=cfs (needs mininet.node import

CPULimitedHost)

#sudo mn --custom ~/mininet/custom/topo-2sw-

2host.py --topo mytopo --mac --switch

ovsk,protocols=OpenFlow13 --controller

remote,ip=<controller ip>

:

OpenDayLight + Mininet · 2019-03-06 · • odl-dlux-all: OpenDaylight graphical user interface...

Documents

Transcript of OpenDayLight + Mininet · 2019-03-06 · • odl-dlux-all: OpenDaylight graphical user interface...