Spoke with the dev that made the feature. You configure the snmp crawl profile, it will reach out to that switch you configure it for. From there, it will use LLDP to go switch to switch, up to 5 layers (we can change this if need be). The LLDP discovery gives MAC to port binding (so we know which next targets to find), and after the crawler has exhausted LLDP switch discovery, it will then request ARP tables from each switch to populate MAC to IP for IoT. He doesn't wish to share how the crawler itself functions in the network, but, that he will show it in PoC. You can create multiple SNMP profiles, and will need to for each subnet/segment of the network. That is to say, it won't crawl any L3 boundaries.
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