Configuration Guide User guide

FastIron Configuration Guide 613
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Metro Ring Protocol
Metro Ring Protocol configuration notes
• When you configure Metro Ring Protocol (MRP), Brocade recommends that you disable one of
the ring interfaces before beginning the ring configuration. Disabling an interface prevents a
Layer 2 loop from occurring while you are configuring MRP on the ring nodes. Once MRP is
configured and enabled on all the nodes, you can re-enable the interface.
• The above configurations can be configured as MRP masters or MRP members (for different
rings).
• Brocade does not recommend configuring more than 15 MRP instances on FCX devices. Also,
due to hardware limitations on this platforms, configuring 40 or more MRP instances may
cause errors.
• If you configure MRP on a device running Layer 3 software, then restart the device running
Layer 2 software, the MRP configuration gets deleted.
MRP rings without shared interfaces (MRP Phase 1)
MRP Phase 1 allows you to configure multiple MRP rings, as shown in Figure 41, 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 configure an MRP ring, any node on the ring 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 41.)
Each ring is an independent ring and RHP packets are processed within each ring.
FIGURE 41 Metro ring – multiple rings