13
7.9.6. VRF Lite Development Scenarios .................................................................................................................... 216
7.9.7. VRF Configuration Example ............................................................................................................................ 219
8. Configuring Multicast Routing ..................................................................... 221
8.1. L3 Multicast Overview ......................................................................................................... 221
8.1.1. IP Multicast Traffic ......................................................................................................................................... 221
8.1.2. Multicast Protocol Switch Support ................................................................................................................. 221
8.1.3. Multicast Protocol Roles ................................................................................................................................. 222
8.1.4. Multicast Switch Requirements ...................................................................................................................... 222
8.1.5. Determining which Multicast Protocols to Enable ......................................................................................... 222
8.1.6. Multicast Routing Tables ................................................................................................................................ 222
8.1.7. Multicast Tunneling ........................................................................................................................................ 222
8.1.8. IGMP ............................................................................................................................................................... 223
8.1.8.1. IGMP Proxy ................................................................................................................................................. 223
8.1.9. MLD Protocol .................................................................................................................................................. 223
8.1.9.1. Join Mechanism .......................................................................................................................................... 224
8.1.9.2. Leave Mechanism ....................................................................................................................................... 224
8.1.10. PIM Protocol ................................................................................................................................................... 224
8.1.10.1. Using PIM-SM as the Multicast Routing Protocol....................................................................................... 224
8.1.10.2. Using PIM-DM as the Multicast Routing Protocol ...................................................................................... 225
8.2. Default L3 Multicast Values ................................................................................................. 225
8.3. L3 Multicast Configuration Examples .................................................................................. 227
8.3.1. Configuring Multicast VLAN Routing with IGMP and PIM-SM ....................................................................... 227
8.3.2. Example 1: MLDv1 Configuration ................................................................................................................... 229
8.3.3. Example 2: MLDv2 Configuration ................................................................................................................... 230
8.3.4. Example 3: MLD Configuration Verification .................................................................................................. 230
9. Configuring Data Center Features ................................................................ 232
9.1. Data Center Technology Overview ...................................................................................... 232
9.2. Priority-based Flow Control ................................................................................................. 232
9.2.1. PFC Operation and Behavior ........................................................................................................................... 233
9.2.2. Configuring PFC .............................................................................................................................................. 233
9.3. Data Center Bridging Exchange Protocol ............................................................................. 234
9.3.1. Interoperability with IEEE DCBX ...................................................................................................................... 234
9.3.2. DCBX and Port Roles ....................................................................................................................................... 235
9.3.3. Configuration Source Port Selection Process .................................................................................................. 236
9.3.4. Configuring DCBX ........................................................................................................................................... 237
9.4. CoS Queuing ......................................................................................................................... 238