Huawei Quidway S3900 Series Operation Manual page 485

Operation Manual – AAA & RADIUS & HWTACACS & EAD
Quidway S3900 Series Ethernet Switches-Release 1510
PC PC PC PC
(1) The user inputs the user name and password (1) The user inputs the user name and password (1) The user inputs the user name and password (1) The user inputs the user name and password
(9) Inform the user the access is ended (9) Inform the user the access is ended (9) Inform the user the access is ended (9) Inform the user the access is ended
Figure 1-2 Basic message exchange procedure of RADIUS
The basic message exchange procedure of RADIUS is as follows:
1) The user enters the user name and password.
2) The RADIUS client receives the user name and password, and then sends an
authentication request (Access-Request) to the RADIUS server.
3) The RADIUS server compares the received user information with that in the Users
database to authenticate the user. If the authentication succeeds, the RADIUS
server sends back an authentication response (Access-Accept), which contains
the information of user's rights, to the RADIUS client. If the authentication fails, it
returns an Access-Reject response.
4) The RADIUS client accepts or denies the user depending on the received
authentication result. If it accepts the user, the RADIUS client sends a
start-accounting request (Accounting-Request, with the Status-Type filed set to
"start") to the RADIUS server.
5) The RADIUS server returns a start-accounting response (Accounting-Response).
6) The user starts to access the resources.
7) The RADIUS client sends a stop-accounting request (Accounting-Request, with
the Status-Type field set to "stop") to the RADIUS server.
8) The RADIUS server returns a stop-accounting response (Accounting-Response).
9) The resource access of the user is ended.
RADIUS RADIUS RADIUS RADIUS
Client client Client client
(2) Access -Request (2) Access -Request (2) Access -Request (2) Access -Request
(3) Access -Accept (3) Access -Accept (3) Access -Accept (3) Access -Accept
(4) Accounting -Request (start) (4) Accounting -Request (start) (4) Accounting -Request (start) (4) Accounting -Request (start)
(5) Accounting -Response (5) Accounting -Response (5) Accounting -Response (5) Accounting -Response
(6) The user starts to access the resources (6) The user starts to access the resources (6) The user starts to access the resources (6) The user starts to access the resources
(7) Accounting - Request (stop) (7) Accounting - Request (stop) (7) Accounting - Request (stop) (7) Accounting - Request (stop)
(8) Accounting -Response (8) Accounting -Response (8) Accounting -Response (8) Accounting -Response
Huawei Technologies Proprietary
1-4
Chapter 1 AAA & RADIUS & HWTACACS
Configuration
RADIUS RADIUS RADIUS RADIUS
server Server server Server