In an MPLS-based network, there is a link that constantly flaps. This flapping makes the network constantly reconverge and causes it to become unstable. Which two technologies can be deployed to resol

IP Event Dampening applies an increasing penalty each time an interface flaps and suppresses route advertisements until the penalty decays below a reuse threshold, preventing the routing protocol from reconverging on every flap.

BFD accelerates failure detection by sending rapid hello packets, which causes faster reconvergence on link failures - the opposite of what is needed when the goal is to suppress the effect of flapping.

Carrier Delay introduces a configurable timer that must expire before an interface down or up event is reported to the routing processes, absorbing short-duration flaps and preventing unnecessary SPF or DUAL recalculations.

IP Routing Protocol Route Purge removes stale route entries from the routing table after a hold-down timer expires but does nothing to dampen or delay the reporting of interface state changes that trigger reconvergence.