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defined in case the first authentication level fails. See the following table on
authentication methods and fallback mechanisms.
Table 10-6: Expert > Authentication Methods
Authentication Type Definition
None
No authentication.
Kerberos
Authentication is performed using a Kerberos
server.
Kerberos/Local
Kerberos authentication is tried first, switching
to Local if unsuccessful.
KerberosDownLocal
Local authentication is performed only when
the Kerberos server is down.
LDAP
Authentication is performed against an LDAP
database using an LDAP server.
LDAP/Local
LDAP authentication is tried first, switching to
Local if unsuccessful.
LDAPDownLocal
Local authentication is performed only when
the LDAP server is down.
Local
Authentication is performed locally. For
example, using the /etc/passwd file.
Local/Radius
Authentication is performed locally first,
switching to Radius if unsuccessful.
Local/TACACS+
Authentication is performed locally first,
switching to TACACS+ if unsuccessful.
Local/NIS
Authentication is performed locally first,
switching to NIS if unsuccessful.
NIS
NIS authentication is performed.
NIS/Local
NIS authentication is tried first, switching to
Local if unsuccessful.