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3Com Switch 8800 Configuration Guide
Chapter 40 AAA and RADIUS/TACACS+ Protocol Con
figuration
40-4
z The TACACS server sends back an authentication response, requesting for the
login password. Upon receiving the response, the TACACS client requests the
user for the login password.
z After receiving the login password, the TACACS client sends an authentication
continuance packet carrying the login password to the TACACS server.
z The TACACS server sends back an authentication response indicating that the
user has passed the authentication.
z The TACACS client sends the user authorization packet to the TACACS server.
z The TACACS server sends back the authorization response, indicating that the
user has passed the authorization.
z Upon receipt of the response indicating an authorization success, the TACACS
client pushes the configuration interface of the switch to the user.
z The TACACS client sends a start-accounting request to the TACACS server.
z The TACACS server sends back an accounting response, indicating that it has
received the start-accounting request.
z The user logs off; the TACACS client sends a stop-accounting request to the
TACACS server.
z The TACACS server sends a stop-accounting response to the client, which
indicates it has received the stop-accounting request packet.
The following figure illustrates the basic message exchange procedures:
Figure 40-2 illustrates the basic message exchange procedures.