In this application, the PPPoE subscriber host terminates in a retail IES service, the IES service ID or name can be obtained by one of the following:
Alc-Retail-Serv-Id or Alc-Retail-Serv-Name attribute in the RADIUS access-accept packet
Be aware that Alc-Retail-Serv-Id takes precedence over Alc-Retail-Serv-Name if both are specified.
Alc-Retail-Serv-Name indicates the service name of the required retail VPRN service configured on the system
If MSAP is used then the SAP is created in the wholesale VPRN.
The PPPoE session is negotiated with the parameters defined by the wholesale VPRN group interface. The connectivity to the retailer is performed using the linkage between the two interfaces.
Because of the nature of IES service, there is no IP address overlap between different IES retails services, therefore, the private-retail-subnets flag is not needed in this case.