Configuration Guide Basic Management
AAA is short for Authentication, Authorization and Accounting.
Authentication refers to the verification of user identities and the related network services.
Authorization refers to the granting of network services to users according to authentication results.
Accounting refers to the tracking of network service consumption by users. A billing system charges users based on
consumption records.
AAA provides effective means of network management and security protection.
 RADIUS
Remote Authentication Dial In User Service (RADIUS) is the most widely used AAA protocol at present.
 Telnet
Telnet is a terminal emulation protocol in the TCP/IP protocol stack which provides access to a remote host through a virtual
terminal connection. It is a standard protocol located at Layer 7 (application layer) of the Open System Interconnection (OSI)
model and used on the internet for remote login. Telnet sets up a connection between the local PC and a remote host.
 System Information
System information includes the system description, power-on time, hardware and software versions, control-layer software
version, and boot-layer software version.
 Hardware Information
Hardware information includes the physical device information as well as slot and module information. The device
information includes the device description and slot quantity. The slot information includes the slot ID, module description
(which is empty if a slot does not have a module), and actual and maximum number of physical ports.
Overview
Controls the terminal access to network devices on the internet based on passwords and privileges.
Login Authentication
Control
Performs username-password authentication to grant access to network devices when AAA is
enabled. (Authentication is performed by a dedicated server.)
Refer to the parameters of a system, such as the clock, banner, and Console baud rate.
Displaying
Configurations
Displays the system configurations, including the configurations that the system is currently running
and the device configurations stored in the nonvolatile random access memory (NVRAM).
Telnet is an application-layer protocol in the TCP/IP protocol stack. It provides the standard governing
remote login and virtual terminal communication on the internet.
Introduces system restart.
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