How to Code SDN

Mainly, this article is the representation of the process of creating code in software defined networking with the guidance of our research experts. Firstly, we have listed some research topics in software defined networking.

Latest SDN Project Titles

  • Controller placement process with deployed in the network to the SDN modeling for cloud computing enabled fog cloud environment
  • Network slicing and deep learning based intrusion detection system with virtual load  balancing in edge enabled SDN/NFV based 5G networks
  • SDN based communications privacy preserving architecture for VANETs using fog computing
  • Efficient path selection in software defined drone networks

Create Code in SDN

Following that, we have created a code for software defined network using both the Mininet and OMNeT++ tools in the following. Let’s start with the Mininet based code.

  • Import SDN related header files

from mininet.node import Node, Host, OVSSwitch, Controller

from mininet.link import Link, Intf

from mininet.net import Mininet

from mininet.examples.clustercli import CLI

  • Remote switch configuration process

def batchStartup( cls, switches, **_kwargs ):

“Start up switches in per-server batches”

key = attrgetter( ‘server’ )

for server, switchGroup in groupby( sorted( switches, key=key ), key ):

info( ‘(%s)’ % server )

group = tuple( switchGroup )

switch = group[ 0 ]

OVSSwitch.batchStartup( group, run=switch.cmd )

return switches

In addition, our technical experts have highlighted the code based on OMNeT++ about the message queue process in controller in the following.

if (dynamic_cast<Open_Flow_Message *>(data_msg) != NULL) {

Open_Flow_Message *of_msg = (Open_Flow_Message *)data_msg;

ofp_type type = (ofp_type)of_msg->getHeader().type;

switch (type) {

case OFPT_HELLO:

registerConnection(of_msg);

sendHello(of_msg);

sendFeatureRequest(data_msg);

break;

case OFPT_PACKET_IN:

EV << “packet-in message from switch\n”;

handlePacketIn(of_msg);

break;

default:

break;

}

}

The research scholars can reach us to acquire some assistance based on the implementation of coding in software defined networking.

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