RRPP timers

When RRPP determines the link state of an Ethernet ring, it uses the following timers:

• Hello timer—Specifies the interval at which the master node sends Hello packets out of the primary port.

• Fail timer—Specifies the maximum delay of Hello packets sent from the primary port to the secondary port of the master node. If the secondary port receives the Hello packets sent by the local master node before the Fail timer expires, the ring is in Health state. Otherwise, the ring transits to Disconnect state.

In an RRPP domain, a transit node learns the Fail timer value on the master node through the received Hello packets. This ensures that all nodes in the ring network have consistent Fail timer settings.