// case study
Computer networking project
Router & switch configuration, then connectivity testing and troubleshooting.
Context
Computer Networks lab work with group A11 (2023). The reports are on GitHub: Module 4 (Cisco Packet Tracer + GNS3, CIDR and VLSM) and Module 5 (VLSM, DHCP, and DNS).
Approach
- Cisco Packet Tracer architecture: a multi-router topology with 21 subnets (A1–A21), with routes and the IP count for each subnet.
- GNS3 architecture: a topology with routers, switches, and NAT to the internet. The subnet table lists the Network ID, netmask, and broadcast address for 10 subnets (A1–A10).
- IP addressing used classless calculation, CIDR and VLSM.
- Configured routers and switches, then tested connectivity with
pingto each host.
Result
ping tests to the target hosts succeeded with 0% packet loss.
What I learned
Network troubleshooting is fastest when done layer by layer, from physical up to application.