Implementing Cisco Service Provider Advanced Routing Solutions (SPRI) — Question 53

An engineer is troubleshooting slow performance issues on a customer’s network after the last multicast configuration change was applied on it. While checking the running configuration on the router, the engineer notices there are many ip igmp join-group commands applied on several interfaces of the router which caused the high CPU utilization usage. What action must the engineer take to solve this issue?

Answer options

• A. Configure all router interfaces to be process-switched by increasing the query interval
• B. Remove ip igmp join-group command on all unnecessary interfaces
• C. Remove unnecessary members from the IGMP group
• D. Configure ip igmp static-group command on all interfaces

Correct answer: D

Explanation

The correct option is D because configuring ip igmp static-group reduces the CPU load by maintaining a static membership in the multicast group, which avoids the need for frequent join-group messages. Options A and B do not address the root cause of the high CPU utilization, while option C does not relate to managing IGMP configurations effectively.