# MVP Simulated Topology

`topology.json` is the L2/L3 dry-run fixture for the simulator skeleton. It
describes two `hwlab-box-simu` instances, two `hwlab-gateway-simu` instances,
and one `hwlab-patch-panel`.

Cross-device propagation is represented only through the patch panel wiring
config. Box simulators keep local port state but do not provide loopback as a
cross-device synchronization substitute.
