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MAGNUM 6K SWITCHES, MNS-6K USER GUIDE
TACACS+ Flow
TACACS works in conjunction with the local user list on the MNS-6K software (operating
system.) Please refer to User Management for adding users on the MNS-6K software. The
process of authentication as well as authorization is shown in the flow chart below.
Login
User in Local
User List?
Yes
Is User Manager?
Yes
Login as Manager
Login as Operator
No
No
TACACS+ Enabled?
No
Logout
Yes
Connect to
TACACS server to
authenticate
Authentication failure
Logout
Authenticated
TACACS+
authorization
Authorized as
Operator or
Authorization Failure
Login as Operator
Authorized as
Manager
Login as Manager
Start
Additional
Servers?
Logout
Connection failure
No
Yes
Login
User in Local
User List?
Yes
Is User Manager?
Yes
Login as Manager
Login as Operator
No
No
TACACS+ Enabled?
No
Logout
Yes
Connect to
TACACS server to
authenticate
Connect to
TACACS server to
authenticate
Authentication failure
Logout
Authenticated
TACACS+
authorization
Authorized as
Operator or
Authorization Failure
Login as Operator
Authorized as
Manager
Login as Manager
Start
Additional
Servers?
Additional
Servers?
Logout
Connection failure
No
Yes
FIGURE 71 – Flow chart describing the interaction between local users and TACACS authorization
The above flow diagram shows the tight integration of TACACS+ authentication with the local
user-based authentication. There are two stages a user goes through in TACACS+. The first stage
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