Brocade TurboIron 24X Series Configuration Guide - Manual (Page 324)

290 Brocade TurboIron 24X Series Configuration Guide
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Metro Ring Protocol (MRP)
FIGURE 17 Metro ring – ring VLAN and customer VLANs
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.
A topology group enables you to control forwarding in multiple VLANs using a single instance of a
Layer 2 protocol such as MRP. A topology group contains a master VLAN and member VLANs. The
master VLAN contains all the configuration parameters for the Layer 2 protocol (STP, MRP, or
VSRP). The member VLANs use the Layer 2 configuration of the master VLAN.
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Customer A
VLAN 30 Customer B
VLAN 40
Customer A
VLAN 30 Customer B
VLAN 40
Switch B
Switch D
Port 3 Port 4
Port 2 Port 1
Port 3 Port 4
Port 2 Port 1
Switch D
ring 1
interfaces 1,1
topology group 2
master VLAN 2 (1,2)
member VLAN 30 (1,2,3)
member VLAN 40 (1,2,4)
ring 1
interfaces 1, 2
topology group 2
master VLAN 2 (1,2)
member VLAN 30 (1,2,3)
member VLAN 40 (1,2,4)
Switch B