CCNA Lab: Dual-site enterprise WAN with BGP, GRE tunnel — Packet Tracer
Built my biggest Cisco Packet Tracer project so far — a dual-site enterprise WAN topology connecting a simulated US headquarters to a Philippines branch office.
Technologies/features implemented:
- BGP with simulated ISP/IXP ASNs
- GRE tunnel to overcome double NAT issues
- OSPF, static routing, NAT/PAT
- HSRP v2, EtherChannel, Rapid-PVST
- DHCP Snooping, DAI, Port Security
- Voice VLANs + wireless deployment
- Syslog, NTP, DNS services
One of the hardest parts was troubleshooting inter-site communication through double NAT and working around Packet Tracer limitations.
This project pushed me far beyond standard CCNA labs and gave me a much better understanding of WAN architecture and enterprise troubleshooting.
I’m still trying to break into IT/networking, so I’d genuinely appreciate any feedback or suggestions from more experienced engineers.
Disclaimer:
This is a fictional educational topology created for learning purposes only. ISP/provider names are used strictly for simulation realism and are not affiliated with or representative of actual network infrastructures. Public IP ranges follow RFC 5737 and RFC 6598 documentation standards.
Topology + configs:
https://github.com/chaardd127/Enterprise-WAN-Topology-US-to-Philippines