Comparative Analysis of DMVPN Phase 3 Performance Across Dynamic Routing Protocols

Abstract

Dynamic Multipoint Virtual Private Network (DMVPN) by Cisco, was developed to overcome the limitations of traditional VPNs by improving their scalability, which had been a drawback. DMVPN achieves this by utilizing technologies like Multipoint Generic Routing Encapsulation (mGRE), Next Hop Resolution Protocol (NHRP), and various routing protocols. Additionally, the inclusion of IPsec is mandatory to ensure robust security measures.
In our research challenge, we sought to implement DMVPN Phase Three within a network configuration comprising one hub, two spokes, and three LANs. To execute this, we employed the GNS3 emulator, facilitating the deployment of different routing protocols such as RIPv2, EIGRP, OSPF, and BGP. The objective of this implementation was to assess and make comparisons based on performance metrics including latency, jitter, TCP/UDP throughput, and round-trip time (RTT). This comprehensive evaluation helps in determining which routing protocol best suits the specific network's needs and goals, shedding light on their respective advantages and limitations within the DMVPN framework.