What are the steps for configuring stateful NBAR for dynamic protocols？（）
- AUse the command ip nbar protocol-discovery to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface.
- BUse the command match protocol rtp to allow identification of real-time audio and video traffic. Use thecommand ip nbar port-map to extend the NBAR functionality for well-known protocols to new port numbers.
- CUse the command match protocol to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface.
- DConfigure a traffic class. Configure a traffic policy. Attach the traffic policy to an interface.
- EConfigure video streaming. Configure audio streaming. Attach the codec to an interface.