HP Q.11. (2510-24) Access, Login Primary, Caution Regarding, Table 4-2.Primary/Secondary Authentication Table

TACACS+ Authentication

Configuring TACACS+ on the Switch

Table 4-2. Primary/Secondary Authentication Table

Access Method and	Authentication Options		Effect on Access Attempts
Privilege Level	Primary	Secondary
Console — Login	local	none*	Local username/password access only.
	tacacs	local	If Tacacs+ server unavailable, uses local username/password access.
Console — Enable	local	none*	Local username/password access only.
	tacacs	local	If Tacacs+ server unavailable, uses local username/password access.
Telnet — Login	local	none*	Local username/password access only.
	tacacs	local	If Tacacs+ server unavailable, uses local username/password access.
	tacacs	none	If Tacacs+ server unavailable, denies access.
Telnet — Enable	local	none*	Local username/password access only.
	tacacs	local	If Tacacs+ server unavailable, uses local username/password access.
	tacacs	none	If Tacacs+ server unavailable, denies access.

*When “local” is the primary option, you can also select “local” as the secondary option. However, in this case, a secondary “local” is meaningless because the switch has only one local level of username/password protection.

Caution Regarding	During local authentication (which uses passwords configured in the switch
the Use of Local for	instead of in a TACACS+ server), the switch grants read-only access if you
Login Primary	enter the Operator password, and read-write access if you enter the Manager
Access	password. For example, if you configure authentication on the switch with
	Telnet Login Primary as Local and Telnet Enable Primary as Tacacs, when you
	attempt to Telnet to the switch, you will be prompted for a local password. If
	you enter the switch’s local Manager password (or, if there is no local Manager
	password configured in the switch) you can bypass the TACACS+ server
	authentication for Telnet Enable Primary and go directly to read-write (Man-
	ager) access. Thus, for either the Telnet or console access method, configuring
	Login Primary for Local authentication while configuring Enable Primary for
	TACACS+ authentication is not recommended, as it defeats the purpose of
	using the TACACS+ authentication. If you want Enable Primary log-in
	attempts to go to a TACACS+ server, then you should configure both Login
	Primary and Enable Primary for Tacacs authentication instead of configuring
	Login Primary to Local authentication.

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