Marshaller

A Cisco Packet Tracer simulation of a fictional aviation-base network: a headquarters site (firewall, router, distribution switch, DNS/FTP/ Web/Mail servers) connected to four factory sites via routed point-to-point links, using OSPF area 0 for dynamic routing and around 20 department VLANs on separate /24 subnets. Added avionics-configgen: a declarative Cisco IOS configuration generator (YAML topology -> VLSM IP planner -> device-independent resolved model -> Jinja templates -> IOS config), modeled on the same pattern used by Ansible resource modules and Cisco NSO. Verified by regenerating this exact network's real, previously-captured addressing facts -- all 77 match exactly, including an OSPF router-id policy corrected to Cisco's real default behavior after cross-referencing the original captured neighbor-table evidence.