300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

By Cisco · Question Mode

QuestionQ167

Multicast Routing

Question Image

Refer to the exhibit. Which two commands must the engineer configure for the company’s PIM-SM network so that Auto-RP mappings can be sent over the FastEthernet0/0 interface without affecting normal operation?

Choose two
  • A enable auto-rp listener
  • B enable sparse-mode
  • C enable Auto-RP announcements
  • D enable sparse-dense mode
  • E enable dense mode
Explanation

The Auto-RP listener enables the Auto-RP control groups to be dense-mode flooded across interfaces that operate in PIM sparse mode, allowing RP mappings to reach the router. Keeping the interface in sparse mode preserves normal PIM-SM forwarding behavior and avoids the potential dense-mode flooding associated with sparse-dense mode.

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