2-3To do… Use the command… RemarksSet the accounting-optionalswitch accounting optionalOptionalBy default, theaccounting-optional switch isoff.Set the messenger function messenger time { enable limitinterval | disable }OptionalBy default, the messengerfunction is disabled.Set the self-service serverlocation functionself-service-url { disable |enable url-string }OptionalBy default, the self-serviceserver location function isdisabled.Note that:z On a unified device, each access user belongs to an ISP domain. You can configure up to 16 ISPdomains on the device. When a user logs in, if no ISP domain name is carried in the user name, thedevice assumes that the user belongs to the default ISP domain.z If you have configured to use "." as the delimiter, for a user name that contains multiple ".", the first"." will be used as the domain delimiter.z If you have configured to use "@" as the delimiter, the "@" must not appear more than once in theuser name.z If the system does not find any available accounting server or fails to communicate with anyaccounting server when it performs accounting for a user, it does not disconnect the user as longas the accounting optional command has been executed, though it cannot perform accounting forthe user in this case.z The self-service server location function needs the cooperation of a RADIUS server that supportsself-service, such as comprehensive access management server (iMC). Through self-service,users can manage and control their account or card numbers by themselves. A server installedwith self-service software is called a self-service server.iMC Server is a service management system used to manage networks and ensure network and userinformation security. With the cooperation of other networking devices in a network, a iMC server canimplement the AAA functions and right management.Configuring an AAA Scheme for an ISP DomainYou can configure either of the following AAA schemes:Configuring a combined AAA schemeYou can use the scheme command to specify an AAA scheme for an ISP domain. If you specify aRADIUS or HWTACACS scheme, the authentication, authorization and accounting will be uniformlyimplemented by the RADIUS or TACACS server(s) specified in the RADIUS or HWTACACS scheme. In
