Final year thesis under Dr. Mayank Pandey, Professor, Computer Science, and Engineering Department, MNNIT. • Realizes a publish-subscribe architecture over SDN using the Floodlight controller module and Mininet infrastructure emulator. • Maintains an IPv4 based topical hierarchy in a centralized controller to enable content-based subscription via dynamic routes that transmit content amongst interested nodes in an asynchronous and space-decoupled fashion (publishers and subscribers are abstracted from each other). • Technologies used: SDN, Mininet, Floodlight, Wireshark. Effective use of Networking concepts e.g. Subnetting and Data structures e.g. Trie. Detailed thesis at https://drive.google.com/file/d/1ARdShp-ugso0HIwAQPm8KXj3k3Y7YRHz/view.