A technique improves the interaction between a backup remote data link switch device coupled to a remote: subnetwork having an Ethernet switch and a local DLSw device coupled to a local subnetwork of a DLSw network. The method comprises treating the surface of a fabric in structured sheet making applications using compositions containing hydrophobic quaternary amines in combination with other hydrophobes and surfactants. The front hole is formed on one end surface of the ligation member. In response to a tension which is applied via the feeling-of-stepping-force generation mechanism by the travel of brake, the stepping force sensor detects a stepping force, thereby generating output to control the electrically operated brake.