Configuring the cluster 291The Authentication menu appears.The Authentication menu includes the following options:/cfg/sys/adm/authfollowed by:servers Accesses the RADIUS AuthenticationServers menu, in order to configure externalRADIUS authentication servers for the cluster(see “Managing RADIUS authenticationservers” (page 292)).timeout Sets the timeout interval for a connectionrequest to a RADIUS server. At the end ofthe timeout period, if no connection has beenestablished, authentication will fail.• interval is an integer that indicatesthe time interval in seconds (s), minutes(m), or hours (h). If you do not specify ameasurement unit, seconds is assumed.The range is 1–10000 seconds. The defaultis 10 seconds.fallback on|off Specifies the desired fallback mode. Validoptions are:• on—if the RADIUS servers areunreachable, the local passwords definedon the Nortel SNAS are used as fallback• off—if the RADIUS servers areunreachable, the only way to accessthe system is to reinstall the software (bootinstall)The default is on.ATTENTIONWith the fallback mode set to on, unwantedaccess to the Nortel SNAS is possibleusing a serial cable if the network cableis disconnected and the local password isknown.Nortel Secure Network Access SwitchUsing the Command Line InterfaceNN47230-100 03.01 Standard28 July 2008Copyright © 2007, 2008 Nortel Networks.
