300-420 Question 282
Select 4An enterprise network engineer is designing a multicast routing architecture for a large organization. The network requires efficient delivery of multicast traffic to receivers, minimizing duplication, and managing traffic sourced from multiple multicast senders. The engineer must also ensure loop-free forwarding of multicast traffic. Which multicast routing concepts should the engineer implement to meet these requirements?
- A
Source trees
- B
Shared trees
- C
Reverse Path Forwarding (RPF)
- D
Spanning Tree Protocol (STP)
- E
Rendezvous Points (RPs)
Show answer and explanation
Correct answers: A, B, C, E
Explanation
To design an efficient multicast routing architecture, key concepts like source trees, shared trees, RPF, and rendezvous points must be implemented. Source trees and shared trees provide efficient multicast traffic delivery paths, while RPF prevents loops by ensuring traffic arrives via the correct interface. Rendezvous points play a critical role in shared tree configurations by facilitating communication between multicast sources and receivers. STP, however, is unrelated to multicast routing and addresses Layer 2 loop prevention.
- A. Correct.
Source trees (Shortest Path Trees) are used to create optimal paths from the source to receivers, minimizing duplication and ensuring efficient delivery of multicast traffic.
- B. Correct.
Shared trees are used to create a common path for multicast traffic through a rendezvous point, which is especially useful in scenarios with multiple multicast sources.
- C. Correct.
Reverse Path Forwarding (RPF) ensures loop-free forwarding of multicast traffic by verifying that the incoming interface for multicast traffic matches the expected path back to the source.
- D. Incorrect.
Spanning Tree Protocol (STP) is used for preventing loops in Layer 2 networks and is unrelated to multicast routing concepts.
- E. Correct.
Rendezvous Points (RPs) are essential for shared tree configurations, acting as a central point where multicast senders and receivers initially communicate.