Why does a broadcast storm occur when the secondary port of the master node is blocked

After an RRPP ring network is built, the master node and transit nodes work properly. The secondary port on the master node has been blocked. However, a broadcast storm still occurs when unknown unicast packets are sent to the RRPP ring network.

On some RRPP nodes, data VLANs are not added to the control VLAN instance, causing a failure to block data VLANs. Consequently, a broadcast storm occurs. The problem can be solved after the data VLANs are added to the control VLAN instance.

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