Refer to the exhibit and the partial configuration on routers R1 and R2.
HSRP is configured on the network to provide network redundancy for the IP traffic. The network
administrator noticed that R2 does not become active when the R1 serial0 interface goes down.
What should be changed in the configuration to fix the problem?
A.
R2 should be configured with an HSRP virtual address.
B.
R2 should be configured with a standby priority of 100.
C.
The Serial0 interface on router R2 should be configured with a decrement value of 20.
D.
The Serial0 interface on router R1 should be configured with a decrement value of 20.
Explanation:
You can configure a router to preempt or immediately take over the active role if its priority is the
highest at any time. Use the following interface configuration command to allow preemption:Switch(config-if)# standby group preempt [delay seconds]
By default, the router can preempt another immediately, without delay. You can use the delay
keyword to force it to wait for seconds before becoming active. This is usually done if there are
routing protocols that need time to converge.
Reference: Configuring HSRP
(http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/release/12.1_12c_ea1/confi
guration/guide/swhsrp.html)