could you guys please tell me if you know some documents on how to configure SNMPv3 ?
this is the only one i've found so far
but i need to understand how to get the engineID and all of that what's required what's not and maybe some configuration examples
This document may help:
The engineID should be pre-assigned, and can be obtained with the command:
show snmp engineID
The Local SNMP engineID can then be used in your SNMP managers.
Essentially, all you need to allow a manager to poll your device is an SNMPv3 group and an SNMPv3 user. The simplest working config is:
snmp-server group v3group v3 auth
snmp-server user v3user v3group v3 auth md5 v3user123