It can be thought of an IP address for a device’s value.
This allows for a more seamless communication channel between the multiple devices on a network and the monitoring tool. It’s one of many network monitoring protocols, but SNMP is special because it’s designed to transmit messages between a central alarm master (an SNMP manager) and SNMP remotes (devices) at each network site. The command snmp-server host 192.168.5.5 informs version 3 authpriv CISCO specifies the keyword authpriv, which indicates encryption will be used and authentication based on HMAC-MD5 or HMAC-SHA algorithms.SNMP stands for Simple Network Management Protocol. The command snmp-server host 192.168.5.5 informs version 2c CISCO specifies version 2c, which only support community string-based authentication. The command snmp-server host 192.168.5.5 traps version 3 auth CISCO configures the host to send traps rather than informs. Finally, the noauth keyword specifies authentication by username only and no encryption. The version 3 keyword indicates that version 3 is in use, which is the ONLY version that supports authentication and encryption. Unlike a trap, an inform message is acknowledged by the receiver. The keyword informs indicates that an inform message type will be used. The receiver will then acknowledge receipt of the notification. The command snmp-server host 192.168.5.5 informs version 3 noauth CISCO will configure the host to authenticate a user by username and send clear text notifications.