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Question 452 - 350-601 discussion

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Refer to the exhibit. A source is sending a multicast traffic stream to the receiver. How is the multicast traffic expected to flow through the network when it reaches a vPC peer?

A.

* The multicast traffic is not replicated to the ports that joined a multicast group (224.0.0.13) or the peer link. * The multicast traffic stream flows over the vPC link to ensure that orphan ports get the multicast stream in failure scenarios.

Answers
A.

* The multicast traffic is not replicated to the ports that joined a multicast group (224.0.0.13) or the peer link. * The multicast traffic stream flows over the vPC link to ensure that orphan ports get the multicast stream in failure scenarios.

B.

* The multicast traffic is replicated to the ports that joined a given multicast group and the peer link. * The multicast traffic stream flows from Agg-1 to Agg-2 over the M1-to-M2 peer link and forwards the traffic over Layer 4 to Access-2.

Answers
B.

* The multicast traffic is replicated to the ports that joined a given multicast group and the peer link. * The multicast traffic stream flows from Agg-1 to Agg-2 over the M1-to-M2 peer link and forwards the traffic over Layer 4 to Access-2.

C.

* The multicast traffic is replicated to the ports that joined a given multicast group and the peer link. * The multicast traffic stream flows over the peer link to ensure that orphan ports receive the multicast stream in failure scenarios.

Answers
C.

* The multicast traffic is replicated to the ports that joined a given multicast group and the peer link. * The multicast traffic stream flows over the peer link to ensure that orphan ports receive the multicast stream in failure scenarios.

D.

* The multicast traffic is not replicated to the ports that joined a multicast group (224.0.0.13) or the peer link. * The multicast traffic stream flows from Agg-1 to Agg-2 over the M1-to-M2 peer link and forwards the traffic over Layer 4 to Access-2.

Answers
D.

* The multicast traffic is not replicated to the ports that joined a multicast group (224.0.0.13) or the peer link. * The multicast traffic stream flows from Agg-1 to Agg-2 over the M1-to-M2 peer link and forwards the traffic over Layer 4 to Access-2.

Suggested answer: C

Explanation:

In a vPC (Virtual Port-Channel) environment, multicast traffic is expected to be replicated to the ports that have joined the multicast group and also across the peer link. This ensures that in case of a failure scenario, orphan ports, which are ports not part of the vPC and only connected to one of the vPC peer switches, still receive the multicast stream.Option C correctly describes this behavior, where the multicast traffic is replicated to the ports that joined a given multicast group and the peer link, and the multicast traffic stream flows over the peer link to ensure that orphan ports receive the multicast stream in failure scenarios12.

asked 10/10/2024
Alex Amponsah
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