Diseño e implementación de una aplicación prototipo para ofrecer el servicio de DHCP sobre una SDN

Abstract

A summary of elements referent to Software Defined Networks and OpenFlow protocol, and later explains Ryu controller components is given. Some of the main features of DHCP protocol are shown as specified in RFC 2131 since this protocol constitutes the base for the development of the application. Afterwards the main elements used in the development stage of the DHCP application are established and explained. The Mininet tool is used for emulating a virtual environment to perform tests with all the necessary connectivity equipment. The application is also run in a physical environment and the necessary switch configuration for compatibility with the OpenFlow protocol is explained. During the application development process test runs are performed and these outputs are presented, including the analysis of data caught by Wireshark. The examined data from Wireshark consists of packets from the DHCP protocol and OpenFlow messages. A tabulation of the time it takes a client to get network parameters via DHCP with both the Ryu application and a traditional DHCP service is also given. Finally the conclusions and recommendations obtained from the development of the project are enumerated and appendixes with additional information for the operability of the application and the source code for the application are incorporated.