300-510 · Question #210
The ISP_A network is configured with PIMv2 with sparse mode. The engineering team at ISP_A must implement multicast support following RFC 5059 in the network. The RP priority will be 0, and the…
The correct answer is C. Implement bootstrap router in the network core. RFC 5059 defines the Bootstrap Router (BSR) protocol for automatic RP discovery and distribution in PIM Sparse Mode networks. Auto-RP (choice A) is a Cisco-proprietary mechanism and does not conform to RFC 5059. Static RP (choice B) requires manual configuration on every…
Question
The ISP_A network is configured with PIMv2 with sparse mode. The engineering team at ISP_A must implement multicast support following RFC 5059 in the network. The RP priority will be 0, and the solution must require limited supervision from the operations team. Which action must the team take to meet the requirements?
Options
- AImplement Auto-RP on the candidate RP and the mapping agent only.
- BImplement Static RP across all routers in the network.
- CImplement bootstrap router in the network core.
- DImplement Anycast-RP on edge routers only.
How the community answered
(24 responses)- A17% (4)
- B4% (1)
- C75% (18)
- D4% (1)
Explanation
RFC 5059 defines the Bootstrap Router (BSR) protocol for automatic RP discovery and distribution in PIM Sparse Mode networks. Auto-RP (choice A) is a Cisco-proprietary mechanism and does not conform to RFC 5059. Static RP (choice B) requires manual configuration on every router, violating the 'limited supervision' requirement. Anycast-RP (choice D) is a redundancy mechanism, not the primary RP discovery mechanism. BSR (choice C) automates RP election and distribution network-wide once the candidate RP and BSR are configured, requiring minimal ongoing operational involvement and fully aligning with RFC 5059 and the RP priority of 0.
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