Chapter 1 What’s New for FortiOS 5.2.1 : System Features : Setting the Service and AC-name in PPOE PADI/PADO Negotiations
  
Setting the Service and AC-name in PPOE PADI/PADO Negotiations
The Service and AC name in the PPPoE PADI/PADO negotiation is now configurable. This allows CLI-specified names to encoded, enhancing logic in the handling of various PPPoE server responses, especially in situations where there are multiple Access Concentrator servers in the Point of Presence site.
Syntax
edit port1
set mode pppoe
set service-name <name>
set ac-name <name>
end