350-401 Question 223
Single answerAn enterprise network engineer is tasked with monitoring network performance between two routers using IPSLA. They configure an IPSLA ICMP Echo operation on Router1 with the following command: 'ip sla 1'. After the operation is configured, they forget to schedule the IPSLA operation. Which of the following steps should the engineer take to ensure the IPSLA operation is running and collecting data?
- A
Configure the command 'ip sla schedule 1 life forever start-time now'.
- B
Add a threshold value to the IPSLA operation using 'ip sla reaction-configuration'.
- C
Enable logging for IPSLA using the command 'logging ip sla'.
- D
Use the command 'ip sla responder' on Router2 to start the IPSLA operation.
Show answer and explanation
Correct answer: A
Explanation
In IPSLA, after configuring an operation, it must be scheduled to start running. The command 'ip sla schedule' is used to define the start time and duration of the operation. Without scheduling, the operation will remain in a configured state but will never actively collect data. In this scenario, the correct command to schedule the ICMP Echo operation is 'ip sla schedule 1 life forever start-time now'.
- A. Correct.
This is the correct step to schedule the IPSLA operation. Without scheduling, the operation will not start, even if it is properly configured.
- B. Incorrect.
While reaction-configuration allows monitoring of thresholds, it does not schedule or start the IPSLA operation. It is unrelated to the issue described in the scenario.
- C. Incorrect.
Enabling logging for IPSLA is not required to run the operation. It is used for debugging and monitoring logs.
- D. Incorrect.
The 'ip sla responder' command is only required for certain operation types like UDP Jitter, and it must be configured on the target device. ICMP Echo does not require a responder.