Implementation of Open Shortest Path First Version 3 (OSPFv3) with Encryption and Authentication in IPv6 Network Rahul Sharma and Nishi Yadav Abstract With the huge use of smart devices, consumption of IPv4 is increased So, in that case, there is a demand of IPv6 to fulfill the demand. However, in modern days, all smart devices have options of this and due to use of IPV6, all the limitations of IPv4 are crossed. In this paper, we have considered the Open Shortest Path First version 3 (OSPFv3) and presented a topology which is implemented in IPv6 Network. The whole network topology is implemented in GNS3 and the results are obtained. In this network topology, we are finding the shortest path, encryption, and authentication between all nodes of network topology. Keywords OSPFv3 · IPv6 · ESP · SHA1 · 3DES · GNS3 1 Introduction For the communication of computers (smart devices) which is allocated in different geographical location we must have the medium, that medium is called Internet for making it useful there are various method available but all methods need one thing common that is Internet Protocol (IP) for identification of device over the Internet [1]. The router is one of the devices which is used for networking and all the routing protocols are configured on the router. There are various routing protocols in IPv6 network some of them are RIPng, EIGRP, and OSPFv3 which are used in IPv6 network. In this paper, we have considered the Open Shortest Path First version 3 (OSPFv3) for IPv6 network as a routing protocol. For authentication, we are using sha1 and for encryption ESP 3DES encryption algorithm. R. Sharma · N. Yadav (B ) School of Studies in Engineering and Technology, Guru Ghasidas Vishwavidalaya, Bilaspur, Chhattisgarh, India e-mail: nishidv@gmail.com R. Sharma e-mail: 1408rahulsharma@gmail.com © Springer Nature Singapore Pte Ltd. 2019 S. Smys et al. (eds.), International Conference on Computer Networks and Communication Technologies, Lecture Notes on Data Engineering and Communications Technologies 15, https://doi.org/10.1007/978-981-10-8681-6_70 767