JNCIP-ENT: Juniper Networks Certified Professional – Enterprise Routing (2023) — Question 20

You have PIM SM multicast configured and running in a network environment comprised of EX4300 devices. Your customers report increased delay when switching channels using IPTV. To help decrease the delay, you implement PIM join load balancing. You add the set protocols pim join-load-balance command to the configuration. After committing, you notice that the flows are still using only one path.
In this scenario, which statement is correct?

Answer options

• A. The clear pim join-distribution command must be issued.
• B. The interfaces must be specified to use for load balancing.
• C. IGMP snooping must also be configured.
• D. PIM join load-balancing only works for PIM-DM.

Correct answer: A

Explanation

The correct answer is A because the clear pim join-distribution command is necessary to refresh the PIM join distribution and allow the new load balancing configuration to take effect. Options B and C are incorrect as they do not address the need to reset the join distribution. Option D is also wrong since PIM join load balancing is applicable beyond just PIM-DM.