I have NMS+NAC version 22.214.171.124 with environment where almost all end systems are using static IP addresses (there is no DHCP service enabled) and most of them are not supporting 802.1x protocol (so I can't use RADIUS Accounting packets to check the end system IP addresses). I know that the "last resort" method for such case is to use the switch SNMP query to it's ipNetToMediaTable. Unfortunately access switches don't have L3 interfaces in hosts VLANs so this solution doesn't work (their ARP tables are empty). When I make manual query to ipNetToMediaTable on a default gateway device I can find MAC to IP mapping for such hosts
In NAC Manager there is an option to enable IP Router Discovery but as I understand this GTAC case article:
this method only works with DHCP service enabled networks:
EAC uses these (DHCP) packets to obtain device type information, and for Router IP discovery it uses the gateway address in the DHCP request to identify the router that will have ARP information for the client.
Thanks in advance for a help