what is the use of a separate strong CHAP/MS-CHAP password in the ACS user

[boonteongng]

what is the use of a separate strong CHAP/MS-CHAP password in the ACS user setup ? Document said it need to be supported by the AAA client. Do I need to configure anything in the AP ( AAA client ) to match this password?

[aonibala]

It used mailly for MAC authentication. Be sure the two passwords are NOT the same: the first is the MAC, and the second is something else.

[venancio.martinez]

I don't understand the use of the second password. In case of MAC authentication, the first password is used, and that works.