300-320 · Question #501
What need to be added to the R1 configuration to allow R2 be the active in case of R1 failure? (Choose two) (There is a diagram showing one switch connected with 2x links to 2x HSRP routers (R1 and…
The correct answer is B. ip track 50 interface f0\1 line-protocol (or ip routing) C. track 50 decrement 20. To enable HSRP failover to R2 when R1's uplink fails (not just the HSRP interface), you must configure object tracking on R1. First, 'ip track 50 interface f0/1 line-protocol' (or ip routing) creates a tracked object (ID 50) that monitors the state of R1's uplink interface…
Question
What need to be added to the R1 configuration to allow R2 be the active in case of R1 failure? (Choose two) (There is a diagram showing one switch connected with 2x links to 2x HSRP routers (R1 and R2). They are connected to two user computers. The HSRP configuration for R1 and R2 is the same.
Options
- Aip track 50 ip route 10.1.1.0 ...
- Bip track 50 interface f0\1 line-protocol (or ip routing)
- Ctrack 50 decrement 20
- Dtrack 50 shutdown
How the community answered
(42 responses)- A7% (3)
- B74% (31)
- D19% (8)
Explanation
To enable HSRP failover to R2 when R1's uplink fails (not just the HSRP interface), you must configure object tracking on R1. First, 'ip track 50 interface f0/1 line-protocol' (or ip routing) creates a tracked object (ID 50) that monitors the state of R1's uplink interface. Second, 'track 50 decrement 20' (applied under the HSRP standby configuration) tells HSRP to reduce R1's priority by 20 if the tracked object goes down. If the decrement drops R1's priority below R2's priority and preemption is enabled, R2 takes over as the active HSRP router. Without these two commands, HSRP would not detect an upstream link failure and failover would not occur.
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