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What can be done to make the group function properly?

During routine maintenance, it became necessary to shutdown G1/0/1 on DS1 and DS2. All other interface were up. During this time, DS1 became the active device for Vlan104s HSRP group. As related to Vlan104s HSRP group. What can be done to make the group function properly?
A. On DS1, disable preempt
B. On DS2, decrease the priority value to a value less than 150
C. On DS1, increase the decrement value in the track command to a value greater than 6
D. On DS1, disable track command.

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Answer: C

Explanation:

We should NOT disable preempt on DS1. By do that, you will make Vlan104s HSRP group fail function. Example: if we are disable preempt on DS1. It can not become active device when G1/0/1 on DS2 fail. In this question, G0/1/0 on DS1 & DS2 is shutdown. Vlan104 (left) : 150 1 = 149. Vlan104 (right) : 200 155 = 145. Result is priority 149 > 145 ( Vlan104 on DS1 is active). If increase the decrement in the track value to a value greater than 6 ( > or = 6). Vlan104 (left) : 150 6 = 144. Result is priority 144 < 145 ( vlan104 on DS2 is active).


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