what is an mfr interface
The Multilink Frame Relay feature enables you to create a virtual interface called a bundle or bundle interface. The bundle interface serves as the Frame Relay data link and performs the same functions as a physical interface.The bundle is made up of physical serial links, called bundle links.his feature provides a cost-effective way to increase bandwidth for particular applications by enabling multiple serial links to be aggregated into a single bundle of bandwidth. Multilink Frame Relay is supported on User-to-Network Interfaces (UNI) and Network-to-Network Interfaces (NNI) in Frame Relay networks.