Mininet and openflow | Computer Science homework help


Problem-1: Create the network topology 

Write a python script to create the topology given in the Fig.1. In this topology H1, H2, H3, and H4 are hosts and S1, S2, S3, and S4 are OpenFlow switches. Specify bandwidth, delay and loss rate for each link of your choice. Assign appropriate port numbers to the switch interfaces and accordingly use in your implementation.


Please refer attached document  for topology(Figure)

Problem-2: Push the flow rules 

Implement a controller which pushes flow rules on switches to satisfy following traffic constraints.

· No traffic should be allowed between H3 and H1.

· The HTTP traffic between H4 and H1 should be routed through Switch S2 and any other traffic between H4 and H1 should be routed through Switch S3.

· The traffic between H3 and H2 should be routed through Switch S3.

· The traffic between remaining nodes should follow shortest path.


Problem-3: Link Bandwidth Measurement 

Once the flow rules are pushed, create necessary traffic flows to calculate instantaneous bandwidth for the following:

· Measure and print the instantaneous bandwidth on the links connected to the Switch S2.

Problem-4: Packet loss Count for a specific traffic flow 

· Calculate the packet loss count between the switches S4 and S1 for the HTTP traffic flow

H4 —S4 — S2 — S1 — H1

· Calculate the packet loss count between the switches S4 and S1 for the non-HTTP traffic flow

H4 —S4 — S3 — S1 — H1


1) Topology implementation file: prob1.py

2) Controller implementation file: prob2.py

3) Controller implementation file: prob3.py

4) Controller implementation file: prob4.py


Paper Writing Center
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.


Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.


Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.


Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.


Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.