As there is an increase in (IOT) Internet of Things, there is a growing implementation of Internet of things in many areas in our day-to-day life. Internet of things entails the linking of different embedded devices like appliances, weather stations and even toys to the internet using the Internet Protocol. Surveys say that the number of embedded devices that are IP-enabled will outnumber the total personal computers in the near future. 6LoWPAN is the name of a concluded working group in the Internet area of the IETF. 6LoWPAN is the technology that enable small, low powered embedded devices to access the internet. 6LoWPAN is a protocol definition that makes IPv6 packets to be carried on top of low power wireless networks, specifically IEEE 802.15.4.

In this literature survey, I am going to give the details about the architecture and design of 6LoWPAN, the routing protocols used, and the security and privacy mechanisms used. There are three types of Lowpans: Ad-Hoc lowpan, Simple lowpan and extended lowpan. I am going to write about the innovative ways to implement security in 6LoWPAN. 6LoWPAN is different because of its small address size and low power features. Hence, to make 6LoWPAN secure new and unique challenges needs to be addressed. The routing protocols in 6LoWPAN are very sensitive because of the limited node’s capabilities in terms of power, transmission range and so on. Hence, it is based on layering decisions: application-based, and other parameter bases.