Company XYZ is connecting its sites over a private WAN. The company is planning on implementing multicast routing on the network. The company has a mixture of routers from different vendors. Which technique can be used in the multicast routing design to minimize PIM sparse mode configurations?

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D. PIM sparse mode with RP using BSR to announce itself BSR (Bootstrap Router Protocol), defined in RFC 5059, is a vendor-neutral standard supported by all major router vendors, making it the correct choice when the network contains non-Cisco equipment. It allows the RP to dynamically announce itself so routers learn the RP address automatically, minimizing manual RP configuration. PIM sparse mode with BSR is both scalable and interoperable in mixed-vendor environments.

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A. PIM dense mode with RP using Auto-RP to announce itself PIM dense mode uses flood-and-prune forwarding and does not rely on a Rendezvous Point, making the combination with Auto-RP RP announcement architecturally contradictory.

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B. PIM sparse mode with RP using Auto-RP to announce itself Auto-RP is a Cisco proprietary protocol and will not function on non-Cisco routers, making it unsuitable for a mixed-vendor network.

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C. PIM dense mode with RP using BSR to announce itself PIM dense mode does not use a Rendezvous Point, so pairing it with BSR for RP election is architecturally inconsistent and provides no operational benefit.

Company XYZ is connecting its sites over a private WAN. The company is planning on implementing multicast routing on the network. The company has a mixture of routers from different vendors. Which…

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