#Network Programmability as a Cloud Service ##Network virtualization and programability

Contributors:

1. Akshay Kumar Battaje
2. Amey Uchagaonkar
3. Deepanshu Lulla
4. Anuj Tyagi

Mentor: Somaya Arianfar

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The goals of this project are:

Add multi–domain network virtualization support to OpenVirtex Support interoperability between the Multi-domain OpenVirtex and the rest of the MOC platform, e.g. HaaS or/and OpenStack Evaluate various aspects of the resulting system, and Explore novel networking services enabled by providing full network control to the customers

Technologies used:

• Mininet (virtual network emulator) and OVS
• OpenVirtex
• SDN Controller (FloodLight)
• Python
• Java
• JSON
• MongoDB

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Installation and Deployment

Install Mininet

# sudo apt-get install mininet  
# git clone git://github.com/mininet/mininet  
# cd mininet  
# install.sh -h  

Install OpenVirtex

# git clone https://github.com/OPENNETWORKINGLAB/OpenVirteX.git -b 0.0-MAINT

Copy the following files from this repository to the OpenVirteX directory as

# cp ovx/java/src/CreateOVXNetwork.java OpenVirteX/src/main/java/net/onrc/openvirtex/api/service/handlers/tenant/
# cp ovx/java/src/ConnectHost.java OpenVirteX/src/main/java/net/onrc/openvirtex/api/service/handlers/tenant/
# cp ovx/java/src/DisconnectHost.java OpenVirteX/src/main/java/net/onrc/openvirtex/api/service/handlers/tenant/

These files are necessary for sending messages on change in configuration

Remove the old jar file
# rm OpenVirteX/target/OpenVirteX.jar

Make following changes in OpenVirteX/scripts/ovx.sh file

1. Comment the line 
    mvn package > /dev/null
    
2. Add the below line,
    mvn package -Dmaven.test.skip=true > /dev/null

Install FloodLight

# sudo apt-get install build-essential default-jdk ant python-dev eclipse  
# git clone git://github.com/floodlight/floodlight.git  
# cd floodlight  
# java -jar target/floodlight.jar  

Setup:

Run the following on seperate VMs

1. Running Mininet Topology

# sudo python mininet_topology.py  

2. Running OpenVirteX

(i) Start MongoDB for OpenVirteX

# sudo mkdir ~/mongo_data/
# sudo mongod --dbpath ~/mongo_data/ --logpath ~/mongologs --fork

(ii) Run OpenVirteX
# sh OpenVirteX/scripts/ovx.sh  

(iii) Add switches to the the virtual topology
# python ovx/utils/add_switches.py <CONTROLLER_IP_1> <PORT_1> <CONTROLLER_IP_2> <PORT_2>

where,
CONTROLLER_IP_1 : IP address of the controller for Tenant_1
CONTROLLER_IP_2 : IP address of the controller for Tenant_2

3. Running the Publisher

# cd ovx/scripts
# sh start_publisher.sh <file_with_list_of_ovx_ips>

The publisher will start listening to incoming messages on port 50000

4. Running message receivers on OVXs

On each VM running OVX,

# cd ovx/scripts
# sh start_receiver.sh <ip_of_the_publisher>

The receiver will start listening to incoming messages from the publisher on port 49999

Configuration:

1. Adding hosts:

The following files can be used to add hosts to the virtual topology

ovx/utils/add_hosts_hd1.py -- Adds hosts to hardware domain 1
ovx/utils/add_hosts_hd2.py -- Adds hosts to hardware domain 2
ovx/utils/add_hosts_hd3.py -- Adds hosts to hardware domain 3

2. Test for connectivity:

On the VM running mininet,

mininet> h1 ping -c3 h3

mininet> h2 ping -c3 h6

mininet> h2 ping -c3 h4

The above commands should be able to ping the hosts

Teardown:

1. Stop mininet:

On the VM running mininet

mininet> exit

# sudo mn -c

2. Stop publisher:

# cd ovx/utils/
# python stop_publisher.py

3. Stop receivers on each OVX:

# cd ovx/utils/
# python stop_receiver.py

4. Stopping OpenVirteX:

Press CTRL + C to stop the script ovx.sh