19 loopback, Overview, Loopback operation – H3C Technologies H3C WX6000 Series Access Controllers User Manual

H3C WX5000 Series Access Controllers, H3C WX3000 Series Unified Switches, H3C LSWM1WCM10 Access Controller Module, H3C LSWM1WCM20 Access Controller Module, H3C LSQM1WCMB0 Access Controller Module, H3C LSRM1WCM2A1 Access Controller Module, H3C LSBM1WCM2A0 Access Controller Module