You've followed a packet, prioritized it, and isolated faults by layer. Now see the actual road: the LAN at a site, the WAN backhaul to the core, the gateways at each end — and the design choice that defines mission-critical networks: everything is doubled. Tap any element to learn it.
Topology and device names are from public Motorola transport documentation. The pattern is real (paired devices, hybrid links); exact models, addressing, and link bandwidths are system-specific and set in licensed docs. Names shown are illustrative of the standard design.