Configuring FRF.9 compression

Frame relay main interface is a P2MP interface, and frame relay subinterface includes the following types: P2P and P2MP. The configuration of frame relay FRF.9 compression varies by different interface types. For a P2P subinterface, use the fr compression frf9 command to enable FRF.9 compression in subinterface view. For a P2MP frame relay interface or subinterface, the frame relay compression is configured when creating static address mapping.