Configure the Local Name
By default, when CHAP is enabled on an interface, the interface uses the router's system hostname as the name sent in CHAP challenge and response packets.
To configure the name the interface uses in CHAP challenge and response packets, include the
local-namestatement at the[edit interfacesinterface-nameppp-options chap]hierarchy level:[edit interfacesinterface-nameppp-options chap]local-namename;