Primary and secondary ports of the master node send Hello packets. If the secondary port periodically receives Hello packets, the master node considers the RRPP ring in Complete state and blocks the secondary port to eliminate loops. Hello packets are forwarded fast depending on the chip. The maximum number of devices that can be configured on an RRPP ring is not limited. When many devices are configured in an RRPP ring, it takes a long time to rectify any link or node fault. It is recommended that a maximum of 16 devices be configured in an RRPP ring.