https://www.cisco.com/assets/sol/sb/Switches_Emulators_v2_3_5_xx/help/350_550/index.html#p age/tesla_350_550_olh/ts_vrrp_18_09.html 2nd switch has 160 priority and it will be active after it is powered up. Preemtion is enabled. Advertisement interval is meant of detection failed node and there are important metric - timeout interval for detecting down. its three times of advertisement. preemption delay is related to preemption.