Using STP ................................................................................148List of commands in this chapter ........................................15813 – Rapid Spanning Tree Protocol (RSTP) ...................... 159RSTP concepts ........................................................................... 159Transition from STP to RSTP .............................................160Configuring RSTP ..................................................................161List of commands in this chapter ........................................17214 – S-Ring™ and Link-Loss-Learn™ (LLL) .................... 174S-Ring and LLL concepts ......................................................... 175Comparing resiliency methods .............................................176RSTP/STP Operation without S-Ring ...............................177RSTP/STP Operation with S-Ring .....................................179LLL with S-Ring .....................................................................181Ring learn features..................................................................181Configuring S-Ring ................................................................181List of commands in this chapter ........................................18515 – Dual-Homing .............................................................. 187Dual-Homing concepts ............................................................ 187Dual-Homing Modes .............................................................190Configuring Dual-Homing ...................................................190List of commands in this chapter ........................................19216 – Link Aggregation Control Protocol (LACP) ............... 193LACP concepts .......................................................................... 193LACP Configuration..............................................................194List of commands in this chapter ........................................20417 – Quality of Service ........................................................ 205QoS concepts ............................................................................. 205DiffServ and QoS...................................................................206IP Precedence .........................................................................207vii
