MRP Rings Without Shared Interfaces (MRP Phase 1)
MRP Phase 1 allows you to configure multiple MRP rings, as shown in Metro Ring - Multiple Rings, but the rings cannot share the same link. For example, you cannot configure ring 1 and ring 2 to each have interfaces 1/1/1 and 1/1/2.
When you configure an MRP ring, any node on the ring can be designated as the master node. A master node can be the master node of more than one ring. Refer to Examples of Multiple Rings Sharing the Same Interface - MRP Phase 2. Each ring operates independently, and RHP packets are processed within each ring.
In this example Metro Ring - Multiple Rings, two nodes are each configured with two MRP rings. Any node in a ring can be the master for its ring. A node can also be the master for more than one ring.