Dell PowerConnect FCS624S Configuration Guide - Page 390

10 Metro Ring Protocol (MRP) Master VLANs and customer VLANs All the ring ports must be in the same VLAN. Placing the ring ports in the same VLAN provides Layer 2 connectivity for a given customer across the ring. Figure 67 shows an example. FIGURE 67 Metro ring - ring VLAN and customer VLANs Switch B ====== ring 1 interfaces 1/1, 1/2 topology group 2 master VLAN 2 (1/1, 1/2) member VLAN 30 (1/1, 1/2, 2/1) member VLAN 40 (1/1, 1/2, 4/1) Customer A VLAN 30 Customer B VLAN 40 Port2/1 Port1/2 Port4/1 Port1/1 Switch B Switch D Port1/2 Port2/1 Port1/1 Port4/1 Customer A VLAN 30 Customer B VLAN 40 Switch D ====== ring 1 interfaces 1/1, 1/2 topology group 2 master VLAN 2 (1/1, 1/2) member VLAN 30 (1/1, 1/2, 2/1) member VLAN 40 (1/1, 1/2, 4/1) Notice that each customer has their own VLAN. Customer A has VLAN 30 and Customer B has VLAN 40. Customer A host attached to Switch D can reach the Customer A host attached to Switch B at Layer 2 through the ring. Since Customer A and Customer B are on different VLANs, they will not receive each other traffic. You can configure MRP separately on each customer VLAN. However, this is impractical if you have many customers. To simplify configuration when you have a lot of customers (and therefore a lot of VLANs), you can use a topology group. 348 PowerConnect B-Series FCX Configuration Guide 53-1002266-01