Performance Comparison of DTN Routing Protocols Using Different Mobility Models

Delay and Fault Tolerant Network (DTN) is a new communication paradigm across multiple networks and addresses stringent conditions that are not supposed in the Internet model. DTN (Delay Tolerant Network) is a segmented wireless ad hoc network that is intermittently connected. Other terms in this series of dynamic networks include interruptible networks, intermittently connected networks, and opportunistic networks. Packet routing in DTN is based on storage carry and forward paradigm.

Routing protocols are an important element in network connectivity. Various comparisons have been made between routing protocols to study voice performance, and less attention has been paid to video performance. Focus is to use voice traffic and video traffic running on the same network to evaluate network performance. The main contribution of this project was to run EIGRP and OSPF routing protocols over the network to investigate network performance and to conclude which routing protocols provide better performance for voice and video. Another point is to apply the diffserv model to the network and check for improved network performance.

IP routing is performed by all hosts and routers, its primary function is to forward packets across network boundaries. The routers communicate with each other via specially designed routing protocols (internal gateway protocols or external gateway protocols) required for the network topology. IP task is to forward packets from the source host to the destination host based solely on the IP address in the packet header. For this purpose, IP defines a packet structure that encapsulates the data to be passed. It also defines an addressing method for tagging datagrams with source and destination information.

TCP / IP is a two-part system that functions as the basic "control system" of the Internet. IP stands for Internet Protocol, its role is to send and route packets to other computers using the IP header (ie IP address) of each packet. The second part, the Transmission Control Protocol (TCP), decomposes the message or file into smaller packets, routes the packet to the correct application on the target computer using the TCP header, and if the packet is lost in the middle I will resend it. Once the packet arrives at the other end, the packet is reassembled in the correct order.

The Internet layer is the second layer of the TCP / IP model that is used to transfer messages from the source computer to the target computer. Internet Protocol (IP) is the primary protocol for this layer. This protocol provides many services, such as routing packets between source and destination. The Internet protocol receives messages from the network interface layer in bit format and converts them into packets. The network interface layer is the lowest layer of the TCP / IP model, the main function of this layer is to establish a connection to physical media using a protocol that can perform error detection and packet framing. This layer includes wide area network (WAN) technologies such as Local Area Network (LAN) and Token Ring, X.25, ehhernet, Frame Relay. This layer is responsible for physical devices such as wires, cables, network interface cards, satellite links.