I have bunch of versa routers & Aruba switches; to configure them I have enabled the network discovery using SNMPv2 -> It worked, and all routers & switches got registered in Zabbix.

Now our organisation has decided to use only SNMPv3, so first we have enabled SNMPv3 on all routers and crosschecked the SNMPWALK command also validated the each SNMPEngineID weather its unique or not (Its unique for individual routers no duplicates).

BUT since 3 days the network discovery enabled not a single device discovered... additionally have manually created one router host with the same SNMP credential macros and its polling data without any issues... Also, have enabled SNMPv3 on few Aruba Switches and enabled the network discovery its worked and discovered.

Wondering why it's not working with the routers.

ANY IDEA or and any additional checks I have to do??