29.7.8 Using with the link-down detection timer and the link-up detection timer

When the link status of ports used in a ring port (physical ports or physical ports belonging to a link aggregation) is unstable, the master node might continuously detect ring faults and ring fault recovery, causing unstable ring network statuses, loops, and extended communication cut-offs. To avoid such situations, a link-down detection timer and link-up detection timer can be used for ports used in a ring port. For the settings of the link-down detection timer and the link-up detection timer, see section 22.4.8, Link-Down Detection Timer Setting and section 22.4.9, Link-Up Detection Timer Setting.