this command result :
mac-authentication authmode usernameasmacaddress usernameformat ?
with-hyphen MAC address with '-', just like XX-XX-XX-XX-XX-XX
without-hyphen MAC address without '-', just like XXXXXXXXXXXX,
But if I use with-hyphen command result is xxxx-xxxx-xxxx mode
I couldn't change to xx-xx-xx-xx-xx-xx mode