Which two discovery protocols can be used to automatically find an RP on a network?

The use of Auto-RP and BSR (Bootstrap Router) highlights essential mechanisms within Protocol Independent Multicast (PIM) for discovering a Rendezvous Point (RP) in multicast networking.

Auto-RP is a Cisco proprietary method that allows routers to advertise the RP information to other multicast routers in the network. Routers that are configured to use Auto-RP listen for RP advertisements and automatically update their information, thereby facilitating quick and efficient RP discovery without manual configuration.

BSR complements Auto-RP by providing a more scalable and vendor-independent approach to RP discovery. BSR allows for the election of the RP using a designated bootstrap router, which disseminates the RP information across the multicast domain. It operates based on a distributed control protocol that simplifies the management of RP configurations and allows routers to find the RP dynamically, thereby enhancing the overall efficiency of multicast routing.

In contrast, the other options do not directly relate to the mechanisms of discovering an RP. For instance, PIMv1 and PIMv2 are versions of the multicast routing protocol that manage packet forwarding but do not inherently provide mechanisms for automatic RP discovery. Similarly, RIP and OSPF are routing protocols focused on unicast traffic, and while they can support multicast routing functionalities,