Assignment 5 on Software Defined Networking
In the era of data centers, increasingly widespread use of server
virtualization has been a key leading factor for recognizing the need for
more flexible and automated switching operations. Increasing use of mobile
devices (smartphones, tablets and notebooks) also lay an emphasis on
allocating network resources, responding to rapidly changing resources,
Quoality of Service (QoS) and security requirements. SDN (Software Defined
Networking) innovations provide an open, end-to-end, flexible and automated
ways to tackle these challenges in modern networks. In this assignment, we
will be focussing only on the security enhancements in a network using
OpenFlow (a standard for SDN).
You are required to familiarize yourself with Software Defined Networking
and OpenFlow. The first deliverable for this assignment will be a one page
summary of your understanding of SDN, potential of network enhancements via
SDN and challenges that network administrators will face with SDN
implementations. Then, you should download and install Mininet (openflow
enabled emulator for SDN that provides openflow network and end-host VMS
within a single machine). It includes built-in support to create several
common topologies and allows for the construction of custom topologies
using a python script. The second deliverable for this assignment will be
to create an openflow-enabled topology in mininet and provide an
application that increments the security in a network. For instance, your
application could reinvent the way rules are created and packets are
inspected in firewalls; or change the add rules/drop rules in the switches
for efficient control logic based on run-time network conditions; or
provide the flexibility to modify traffic prioritization/route preferences
in openflow switch control logic. As a part of this second deliverable you
are required to provide a description of your application, topology used,
how its implemented in networks today, how will openflow improve this
implementation, what challenges (limitations) might be encountered for your
proposed openflow enabled implementation and how would your implementation
behave when the topology scales to include many more hosts. The topology
for this network can vary for individual submissions. Although in its
simplest form, it must contain atleast one controller, 4 openflow enabled
switches and 10 hosts to clearly demonstrate the usage and significance of
your application.
Relevant Material
Following are some of the papers and lectures that can be reffered for a
basic understanding of openflow, mininet, and some existing implemented
modules in openflow:
- Ethane : Taking control of the Enterprise
- ElasticTree : saving energy in data center networks.
-
HERCULES: Integrated Control Framework for Datacenter Traffic Management
- Automated and scalable QoS control for network convergence
- Maestro
- Mininet
- Spain
- A Network in a Laptop
- Openflow: enabling innovation in campus networks
- DevoFlow: scaling flow managementfor high performance networks
- Scalable flow-based networking with DIFANE
- Hyperflow: A distributed control plane for openflow
- Scot Shenker
- Nick McKeown
Files
mininet
Submission
To be done in the group of two.
Deadline is 20 Nov.