3Com 4210G Series Configuration Manual page 536

Figure 1-7 Configure AAA for Telnet users by a HWTACACS server
Telnet user
Configuration procedure
# Configure the IP addresses of the interfaces (omitted).
# Enable the Telnet server on the switch.
<Switch> system-view
[Switch] telnet server enable
# Configure the switch to use AAA for Telnet users.
[Switch] user-interface vty 0 4
[Switch-ui-vty0-4] authentication-mode scheme
[Switch-ui-vty0-4] quit
# Configure the HWTACACS scheme.
[Switch] hwtacacs scheme hwtac
[Switch-hwtacacs-hwtac] primary authentication 10.1.1.1 49
[Switch-hwtacacs-hwtac] primary authorization 10.1.1.1 49
[Switch-hwtacacs-hwtac] primary accounting 10.1.1.1 49
[Switch-hwtacacs-hwtac] key authentication expert
[Switch-hwtacacs-hwtac] key authorization expert
[Switch-hwtacacs-hwtac] key accounting expert
[Switch-hwtacacs-hwtac] user-name-format without-domain
[Switch-hwtacacs-hwtac] quit
# Configure the AAA methods for the domain.
[Switch] domain bbb
[Switch-isp-bbb] authentication login hwtacacs-scheme hwtac
[Switch-isp-bbb] authorization login hwtacacs-scheme hwtac
[Switch-isp-bbb] accounting login hwtacacs-scheme hwtac
[Switch-isp-bbb] quit
# You can achieve the same result by setting default AAA methods for all types of users.
[Switch] domain bbb
[Switch-isp-bbb] authentication default hwtacacs-scheme hwtac
[Switch-isp-bbb] authorization default hwtacacs-scheme hwtac
[Switch-isp-bbb] accounting default hwtacacs-scheme hwtac
When telneting into the switch, a user enters username userid@bbb for authentication using domain
bbb.
Authentication/Accounting server
10.1.1.1/24
Switch
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Internet