1-2Table 1-1 Description on user interfaceUser interface Applicable user Port used RemarksAUX Users logging in through theconsole port Console portEach switch canaccommodate one AUXuser.VTY Telnet users and SSH users Ethernet portEach switch canaccommodate up to fiveVTY users.One user interface corresponds to one user interface view, where you can configure a set of parameters,such as whether to authenticate users at login and the user level after login. When the user logs inthrough a user interface, the connection follows these parameter settings, thus implementingcentralized management of various sessions.Relationship Between a User and a User InterfaceYou can monitor and manage users logging in through different modes by setting different types of userinterfaces. An S5100-SI/EI switch provides one AUX user interface and five VTY user interfaces.z A user interface does not necessarily correspond to a specific user.z When a user logs in, the system automatically assigns the user a free user interface with thesmallest number based on the user login mode. The login process of the user is restricted by theconfigurations under this user interface.z The user interface assigned to a user depending on the login mode and login time.A user interface can be used by one user at one time, however, the user interface is not dedicated to aspecific user. For example, user A can use VTY 0 to log in to the device. When user A logs out, user Bcan use VTY 0 to log in to the device.User Interface IndexTwo kinds of user interface index exist: absolute user interface index and relative user interfaceindex.1) The absolute user interface indexes are as follows:z The absolute AUX user interface is numbered 0.z VTY user interface indexes follow AUX user interface indexes. The first absolute VTY userinterface is numbered 1, the second is 2, and so on.2) A relative user interface index can be obtained by appending a number to the identifier of a userinterface type. It is generated by user interface type. The relative user interface indexes are asfollows:z AUX user interfaces is numbered AUX0.z VTY user interfaces are numbered VTY0, VTY1, and so on.Common User Interface ConfigurationFollow these steps to configure common user interface:
