Configuration Guide User guide

BigIron RX Series Configuration Guide 407

53-1002484-04

MRP rings without shared interfaces

MRP Phase 1 allows you to configure multiple MRP rings, as shown in Figure 64, but the rings

cannot share the same link. For example, you cannot configure ring 1 and ring 2 to each have

interfaces 1/1 and 1/2.

Also, when you configured an MRP ring, any node on the ring that can be designated as the master

node for the ring. A master node can be the master node of more than one ring. (Refer to

Figure 64.) Each ring is an independent ring and RHP packets are processed within each ring.

FIGURE 64 Metro ring – multiple rings

In this example, two nodes are each configured with two MRP rings. Any node in a ring can be the

master for its ring. A node also can be the master for more than one ring.

Ring initialization

The ring shown in Figure 63 shows the port states in a fully initialized ring without any broken links.

Figure 65 shows the initial state of the ring, when MRP is first enabled on the ring’s switches. All

ring interfaces on the master node and member nodes begin in the Preforwarding state (PF).

Ring 1

Ring 2

Ring 3

port1/1

port1/2

port4/2

port4/1

Master

Node

Master

node