Nortel Networks 4050 manual Radius Authentication Servers menu displays, Fallback onoff

	Chapter 10 Configuring system settings 493
/cfg/sys/adm/auth
followed by:
timeout <interval>	Sets the timeout interval for a connection request to a
	RADIUS server. At the end of the timeout period, if no
	connection has been established, authentication will
	fail.
	• interval is an integer that indicates the time
	interval in seconds (s), minutes (m), or hours (h). If
	you do not specify a measurement unit, seconds is
	assumed. The range is 1–10000 seconds. The
	default is 10 seconds.
fallback onoff	Specifies the desired fallback mode. Valid options are:
	• on — if the RADIUS servers are unreachable, the
	local passwords defined on the Nortel SNAS 4050
	are used as fallback
	• off — if the RADIUS servers are unreachable, the
	only way to access the system is to reinstall the
	software (boot install)
	The default is on.
	Note: With the fallback mode set to on, unwanted
	access to the Nortel SNAS 4050 is possible using a
	serial cable if the network cable is disconnected and
	the local password is known.
ena	Enables RADIUS authentication of system users.
	The default is disabled.
dis	Disables RADIUS authentication of system users.
	The default is disabled.

Managing RADIUS authentication servers using the CLI

To configure the Nortel SNAS 4050 to use external RADIUS servers to authenticate system users, use the following command:

/cfg/sys/adm/auth/servers

The RADIUS Authentication Servers menu displays.

Nortel Secure Network Access Switch 4050 User Guide