The driver no longer collects over SNMP. SNMP_HEALTH_PROFILE states where the switch publishes uptime (TimeTicks), CPU and memory (tables with one row per stack unit, first row as before); the application polls and computes (napalm-device-types docs/STRUCTURE.md). Interface counters now come from the 64-bit ifXTable where the switch has it, as the application reads them for every device.