You can configure ANCP to operate in a mode compatible with the protocol as it was initially proposed to operate. This pre-ietf mode is compatible with draft-wadhwa-gsmp-l2control-configuration-00.txt, GSMP extensions for layer2 control (L2C). Setting this backwards-compatible mode enables interoperation with devices that are not compatible with the current IETF ANCP draft, draft-ietf-ancp-protocol-02.txt, Protocol for Access Node Control Mechanism in Broadband Networks.
To configure ANCP to operate in a backwards-compatible mode: