Refer to the exhibit. A small enterprise connects its office to two ISPs, Using Separate T1 links. A Static Route is used for the default Route, Pointing to both interfaces with a different…

Question

Exhibit

Options

• AImplement HSRP link tracking on the branch router L2P-R1
• BUse a track object with an IP SLA probe for the static route on L2P-R1.
• CTrack the link state of the ethernet link using a track object on L2P-R1
• DUse a routing protocol between L2P-R1 and the upstream ISP

• A
  17% (4)
• B
  48% (11)
• C
  35% (8)

Explanation

Interface Tracking Interface tracking allows you to specify another interface on the router for the HSRP process to monitor in order to alter the HSRP priority for a given group. If the specified interface's line protocol goes down, the HSRP priority of this router is reduced, allowing another HSRP router with higher priority can become active (if it has preemption enabled). To configure HSRP interface tracking, use the standby [group] track interface [priority] command. When multiple tracked interfaces are down, the priority is reduced by a cumulative amount. If you explicitly set the decrement value, then the value is decreased by that amount if that interface is down, and decrements are cumulative. If you do not set an explicit decrement value, then the value is decreased by 10 for each interface that goes down, and decrements are cumulative. The following example uses the following configuration, with the default decrement value of 10. Note: When an HSRP group number is not specified, the default group number is group 0. interface ethernet0 ip address 10.1.1.1 255.255.255.0 standby ip 10.1.1.3 standby priority 110 standby track serial0 standby track serial1 The HSRP behavior with this configuration is: 0 interfaces down = no decrease (priority is 110) 1 interface down = decrease by 10 (priority becomes100) 2 interfaces down = decrease by 10 (priority becomes 90)

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