## 3 Literature Review  
The research presented in [1] introduces an innovative technique that integrates a backup mechanism directly into the real-time network, enhancing downtime management and maintaining optimal quality at 100%. The simulations demonstrate that the backup process operates smoothly, ensuring network quality remains intact. This study highlights the benefits of a failover system using BGP routing on a single link connection, showing superior performance. The study in [2] evaluates the effectiveness of merging internal and external routing protocols using GNS3, focusing on parameters such as throughput, jitter, packet loss, and network convergence. To achieve high Quality of Service (QoS), it is essential to minimize levels of throughput, jitter, and packet loss. The findings reveal that the OSPF routing protocol offers the fastest network convergence, while the combination of OSPF and BGP delivers the highest throughput, lowest packet loss, and lowest jitter. In [3], the research aims to identify the best interior gateway routing protocol for various traffic conditions within a corporate network. The study seeks to determine the most effective protocol for managing and routing network traffic, ensuring efficient communication and performance. The ultimate goal is to provide enterprises with valuable insights into selecting the internal gateway protocol that best meets their specific network requirements. The research in [4] focuses on comparing various networking characteristics using Cisco's Packet Tracer simulation environment, specifically examining packet drops, routing convergence speed, and end-to-end latency. The study likely assesses the performance of different networking setups or protocols based on these criteria to gain insights into their efficiency and effectiveness in a simulated environment. The study in [5] analyzes the performance of IPv6, concentrating on the header format, security concerns, and routing protocols, utilizing Packet Tracer for simulations. The emphasis is on evaluating the efficiency and functionality of these elements within the context of IPv6. The research in [6] investigates the performance of well-known routers, focusing on three IPv6 protocols: EIGRPv6, OSPFv3, and Routing Information Protocol Next Generation (RIPng). Data transmission rates and convergence times are measured using a Cisco simulation platform. Real-time comparisons are made using the ping command to check network connections, with findings collected through Cisco Packet Tracer, offering insights into the efficiency of these protocols in an IPv6 environment. In [7], the work examines the challenges faced by Internet Service Providers (ISPs) during the transition to IPv6. Issues such as packet traversal difficulties, routing scaling limitations, performance reliability concerns, and the need for enhanced security measures are explored. The study provides a comprehensive overview of the complexities involved in migrating to an IPv6 network. The fundamental purpose of the research in [8] is to evaluate the performance of specific protocols within simulated network models. The assessment is based on factors such as throughput, jitter, convergence time, end-to-end latency, and packet depletion. The results indicate that the EIGRP routing protocol outperforms OSPF in terms of overall performance, suggesting it is more suitable for real-world applications. The study in [9] explores multiple Internet Protocol Security (IPsec) transformations in Network Simulator Version 2 (NS2) simulations, using different authentication and encryption techniques. The findings reveal that IPsec overhead is minimal for smaller packet sizes but significantly increases for larger packets, especially when fragmentation is necessary. This information can help network managers make informed decisions about the trade-off between processing costs and the need for larger address spaces when transmitting large IP packets.