Metro Ring Protocol configuration

To configure Metro Ring Protocol (MRP), perform the following tasks. You need to perform the first task on only one of the nodes. Perform the remaining tasks on all the nodes.

• Disable one of the ring interfaces. This prevents a Layer 2 loop from occurring while you are configuring the devices for MRP.
• Add an MRP ring to a port-based VLAN. When you add a ring, the CLI changes to the configuration level for the ring, where you can perform the following tasks.
  • Optionally, specify a name for the ring.
  • On the master node only, enable the device to be the master for the ring. Each ring can have only one master node.
  • Specify the MRP interfaces. Each device has two interfaces to an MRP ring.
  • Optionally, change the hello time and the preforwarding time. These parameters control how quickly failover occurs following a change in the state of a link in the ring.
  • Enable the ring.
• Optionally, add the ring VLAN to a topology group to add more VLANs to the ring. If you use a topology group, make sure you configure MRP on the group master VLAN. Refer to Topology groups.
• Re-enable the interface you disabled to prevent a Layer 2 loop. Once MRP is enabled, MRP will prevent the Layer 2 loop.