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silicann / blickwerk-boot

linux kernel and u-boot sources for blickwerk sensors
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Emit early network packet during u-boot phase #8

Open sumpfralle opened 5 years ago

sumpfralle commented 5 years ago

It would be nice, if the sensors would emit at least a single packet during their early boot phase (u-boot), in order to announce their MAC address to the attached switch.

This would be useful for speeding up discovery (without waiting for the full boot process) via SNMP.

Additionally it would allow a robust approach for identifying sensors based on their MAC address even in case of a broken network setup.

I am not aware of a usual format for non-IP-based packets of this kind.

sumpfralle commented 5 years ago

Maybe a LLDP packet would be suitable.