You can use this command
cifs session show -fields windows-user ,unix-user ,auth-mechanism
You can see this intuitively
Such as:
cluster1::> vserver cifs security modify -vserver vs1 -kerberos-clock-skew 3 -kerberos-ticket-age 8
cluster1::> vserver cifs security show -vserver vs1
Vserver: vs1
Kerberos Clock Skew: 3 minutes
Kerberos Ticket Age: 8 hours
Kerberos Renewal Age: 7 days
Kerberos KDC Timeout: 3 seconds
Is Signing Required: false
Is Password Complexity Required: true
Use start_tls For AD LDAP connection: false
Is AES Encryption Enabled: false
LM Compatibility Level: lm-ntlm-ntlmv2-krb
Is SMB Encryption Required: false