350-401 Question 221
Select 2A network engineer is tasked with monitoring the performance of a critical WAN link between two branch offices. They decide to use IP SLA to measure the round-trip delay and jitter for ICMP packets over the link. After configuring the IP SLA operation on the router, which additional steps must be taken to ensure the results are actively monitored? (Choose two.)
- A
Define a schedule for the IP SLA operation to start and run continuously
- B
Configure a responder on the destination device
- C
Assign the IP SLA operation to an SNMP trap group
- D
Apply an access control list (ACL) to permit IP SLA traffic
- E
Verify the IP SLA operation using the 'show ip sla statistics' command
Show answer and explanation
Correct answers: A, E
Explanation
To monitor IP SLA performance metrics, the operation must first be scheduled to run. Additionally, verifying the operation using the 'show ip sla statistics' command is critical to ensure it is functioning as expected and collecting the desired data. Other configurations, like responders or SNMP traps, are situational and not needed for ICMP-based IP SLA.
- A. Correct.
A schedule must be defined for the IP SLA operation to activate and run continuously or at specific intervals. Without scheduling, the operation will not start.
- B. Incorrect.
An IP SLA responder is not required when using ICMP-based operations, as ICMP traffic does not rely on a responder.
- C. Incorrect.
Assigning the IP SLA to an SNMP trap group is not necessary for basic operation. SNMP traps are only needed for integration with monitoring tools.
- D. Incorrect.
An ACL is not required for this scenario unless there are specific restrictions blocking ICMP traffic. This is not part of a standard IP SLA configuration.
- E. Correct.
The 'show ip sla statistics' command is essential to verify the operation's results and monitor performance metrics like delay and jitter.