Implementing Cisco Service Provider Advanced Routing Solutions (SPRI) — Question 90

A network engineer recently deployed a wireless network for users at a new office to join video conferences wirelessly. The existing network consists of routers that are configured for EIGRP and BGP, which are located at several data centers in different physical locations. The engineer configured PIM-SSM within a single domain from a single source. However, during the testing phase, the video conference failed to work for any of the users. The IPs are reachable and firewalls in the network are configured correctly to allow the traffic. Which action resolves the issue?

Answer options

• A. Configure PIM sparse mode to replace PIM-SSM.
• B. Configure PIM dense mode to replace PIM-SSM.
• C. Configure the devices to send join messages toward a multicast SPT.
• D. Configure PIM dense mode with multidomain multicast.

Correct answer: C

Explanation

The correct answer, C, addresses the need for devices to correctly join the multicast group by sending join messages towards the multicast Shortest Path Tree (SPT). The other options either suggest changing the PIM mode, which may not be necessary for a single-source scenario, or implement configurations that do not directly resolve the issue with multicast traffic flow.