User Documentation
User Manual Managed Switches 
2 
3.4.1 PoE Settings .................................................................................................................. 55 
3.4.2 PoE Timetabling ............................................................................................................. 57 
3.4.3 PoE Status ..................................................................................................................... 57 
3.4.4 PoE Email Warning Events Settings .............................................................................. 58 
3.4.5 PoE Relay Warning Events Settings ............................................................................. 58 
3.5 Communication redundancy............................................................................................... 59 
3.5.1 Introduction to Communication Redundancy ................................................................. 59 
3.5.2 The Turbo Ring Concept ................................................................................................ 60 
3.5.2.1 Topology Setup for “Turbo Ring (V1)” or “Turbo Ring V2” ..................................... 60 
3.5.2.2 Ring Coupling Configuration .................................................................................. 62 
3.5.2.3 Dual-Ring Configuration (applies only to “Turbo Ring V2”) ................................... 63 
3.5.2.4 Dual-Homing Configuration (applies only to “Turbo Ring V2”) .............................. 63 
3.5.3 Configuring “Turbo Ring (V1)” and “Turbo Ring V2” ...................................................... 64 
3.5.3.1 Configuring Turbo Ring (V1, original version) ........................................................ 64 
3.5.3.2 Configuring Turbo Ring V2 (new version) .............................................................. 66 
3.5.4 The Turbo Chain Concept .............................................................................................. 70 
3.5.5 Configuring “Turbo Chain” ............................................................................................. 70 
3.5.5.1 Head Switch Configuration .................................................................................... 71 
3.5.5.2 Member Switch Configuration ................................................................................ 71 
3.5.5.3 Tail Switch Configuration ....................................................................................... 71 
3.5.6 STP / RSTP .................................................................................................................... 73 
3.5.6.1 The STP / RSTP Concept ...................................................................................... 73 
3.5.6.2 How STP Works ..................................................................................................... 75 
3.5.7 Configuring STP / RSTP ................................................................................................ 78 
3.6 Using Traffic Prioritization .................................................................................................. 81 
3.6.1 The Traffic Prioritization Concept .................................................................................. 81 
3.6.2 Configuring Traffic Prioritization ..................................................................................... 84 
3.6.2.1 QoS Classification ................................................................................................. 84 
3.6.2.2 CoS Mapping ......................................................................................................... 87 
3.6.2.3 ToS/DiffServ Mapping ............................................................................................ 87 
3.7 Using Virtual LAN ................................................................................................................. 88 
3.7.1 The Virtual LAN (VLAN) Concept .................................................................................. 88 
3.7.2 Configuring Virtual LAN ................................................................................................. 92 
3.7.2.1 VLAN Settings........................................................................................................ 92 
3.7.2.2 Port-Based VLAN Settings .................................................................................... 94 
3.7.2.3 VLAN Table ............................................................................................................ 94 
3.8 Using Multicast Filtering ..................................................................................................... 95 
3.8.1 The Concept of Multicast Filtering ................................................................................. 96 
3.8.2 Configuring IGMP Snooping .......................................................................................... 99 
3.8.3 IGMP Table .................................................................................................................. 101 
3.8.4 Static Multicast MAC Addresses .................................................................................. 102 
3.8.5 Configuring GMRP ....................................................................................................... 103 
3.8.6 GMRP Table ................................................................................................................ 103 
3.9 Using Bandwidth Management ......................................................................................... 104 










