I am pleased to introduce the work of one of my students, who developed a complex corporate network topology using Cisco Packet Tracer – a simulation tool widely used in the Cisco Networking Academy program.
You can find the video link here: Corporate Network Optimization in Cisco Packet Tracer
This project clearly demonstrates that even within a simulator like Packet Tracer, it is possible to build a fully functional topology connecting both the corporate headquarters and branch networks. The work reaches a professional level in terms of network design, configuration, and security.
Key Technologies Implemented:
- VLAN (Virtual LAN): Dividing the network into logical segments to improve security and efficiency.
- OSPF (Open Shortest Path First): A dynamic routing protocol used within an organization for efficient route sharing.
- Static Routing: Manual route configuration, often used for critical or backup paths.
- BGP (Border Gateway Protocol): A routing protocol used for exchanging routes between different autonomous systems, essential for larger-scale network interconnections.
- IPSec VPN: Establishing secure, encrypted tunnels between remote sites.
- NAT (Network Address Translation): Mapping internal private IP addresses to public addresses for internet access.
- ACL (Access Control Lists): Defining traffic permissions to enhance security.
- DMZ (Demilitarized Zone): Hosting public services while protecting the internal network.
- HSRP (Hot Standby Router Protocol): Ensuring gateway redundancy and high availability.
- Layer 3 EtherChannel: Bundles multiple physical links between switches or routers into a single logical link to achieve higher bandwidth and redundancy at the Layer 3 (routing) level.
- AAA Server (RADIUS): Centralized user authentication and accounting.
- DHCP Server: Dynamic IP address assignment to client devices.
- DNS Server: Translating domain names to IP addresses.
- VoIP (Voice over IP): Enabling voice communication over IP networks.
- NTP Server: Synchronizing time across all network devices.
Picture 1 - Professional Corporate Network Simulation in Packet Tracer
Simulation Limitations:
It is important to highlight that some minor anomalies are due to the Packet Tracer simulator limitations, not configuration mistakes:
- Incorrect time display for OSPF routes.
- Slower network convergence.
- Occasional delay in DHCP lease assignments.
Such issues would not occur when deploying on real Cisco hardware.
In conclusion, this project is a strong showcase of professional corporate network design and deployment even within a simulation environment — an excellent preparation for real-world implementations.