securing using SNMP v3

snmp server engine ID can be manually created but  is auto created.  When engineID is changed, enmp users needs to be recreated.

SNMP v3 has several security levels and more secure than v1 and v2:

AUTH - authentication and no encryption
NoAuth - no authentication and no encryption
PRIV - authentication and encryptuon


Example of using SNMP v3 with ACL 5,  SNMP user U1 is created with authentication SHA and its passworrd "a-pass" and encryption AES 128 with password "e-pass"  User U1 is memner of group G1

U1 user account is not show in running configuration.  Show snmp user command shows SNMP users

Send traps to SNMP server 192.168.1.164 using U1 user account. specify the authentication and encryption methods its passwords.