ROX™
ROX™ v2.2 User Guide
7
RuggedBackbone™ RX1500
25.1.1. Router and Host IGMP Operation ........................................................ 274
25.1.2. Switch IGMP Operation ....................................................................... 275
25.1.3. Combined Router and Switch IGMP Operation ...................................... 277
25.2. GMRP (GARP Multicast Registration Protocol) ................................................ 277
25.2.1. GMRP Example .................................................................................. 278
25.3. Multicast Filtering Configuration and Status .................................................... 280
25.3.1. Configuring IGMP Parameters ............................................................. 280
25.3.2. Configuring Static Multicast Groups ...................................................... 282
25.3.3. Configuring GMRP .............................................................................. 285
25.4. Troubleshooting ............................................................................................. 287
26. Classes Of Service .................................................................................................. 289
26.1. CoS Operation .............................................................................................. 289
26.1.1. Inspection Phase ................................................................................ 289
26.1.2. Forwarding Phase ............................................................................... 290
26.2. CoS Configuration ......................................................................................... 290
26.2.1. Global CoS Parameters ...................................................................... 290
26.2.2. Priority to CoS Mapping ...................................................................... 291
26.2.3. DSCP to CoS Mapping ....................................................................... 292
27. MAC Address Tables ............................................................................................... 294
28. Spanning Tree ......................................................................................................... 298
28.1. RSTP Operation ............................................................................................ 298
28.1.1. RSTP States and Roles ...................................................................... 299
28.1.2. Edge Ports ......................................................................................... 301
28.1.3. Point-to-Point and Multipoint Links ....................................................... 301
28.1.4. Path and Port Costs ........................................................................... 301
28.1.5. Bridge Diameter .................................................................................. 302
28.2. MSTP Operation ............................................................................................ 302
28.2.1. MST Regions and Interoperability ........................................................ 303
28.2.2. MSTP Bridge and Port Roles .............................................................. 304
28.2.3. Benefits of MSTP ............................................................................... 305
28.2.4. Implementing MSTP on a Bridged Network ........................................... 305
28.3. RSTP Applications ......................................................................................... 306
28.3.1. RSTP in Structured Wiring Configurations ............................................ 306
28.3.2. RSTP in Ring Backbone Configurations ............................................... 308
28.3.3. RSTP Port Redundancy ...................................................................... 309
28.4. Spanning Tree Configuration .......................................................................... 309
28.4.1. Spanning Tree Parameters .................................................................. 310
28.4.2. Port RSTP Parameters ........................................................................ 314
28.4.3. Bridge MSTI Parameters ..................................................................... 316
28.4.4. Port MSTI Parameters ........................................................................ 318
28.5. Spanning Tree Statistics ................................................................................ 320
28.5.1. Bridge RSTP Statistics ........................................................................ 320
28.5.2. Port RSTP Statistics ........................................................................... 322
28.5.3. MSTI Status ....................................................................................... 325
28.5.4. Port MSTP Statistics ........................................................................... 327
28.6. Clearing Spanning Tree Statistics ................................................................... 328
28.7. Troubleshooting ............................................................................................. 329
29. Virtual LANs ............................................................................................................. 332
29.1. VLAN Operation ............................................................................................ 332
29.1.1. VLANs and Tags ................................................................................ 332
29.1.2. Tagged vs. Untagged Frames ............................................................. 332
29.1.3. Native VLAN ....................................................................................... 332
29.1.4. Edge and Trunk Port Types ................................................................ 332
29.1.5. VLAN Ingress and Egress Rules .......................................................... 333