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Question 169 - 350-601 discussion

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Refer to the exhibit.

A host with a source address 10.10.10.10 sends traffic to multicast group 239.1.1.1. How do the vPC switches forward the multicast traffic?

A.

If multicast traffic is received on Switch1 over the vPC peer-link, the traffic is dropped

Answers
A.

If multicast traffic is received on Switch1 over the vPC peer-link, the traffic is dropped

B.

If multicast traffic is received on Po10 Switch1, the traffic is forwarded out on Po1 and Po20

Answers
B.

If multicast traffic is received on Po10 Switch1, the traffic is forwarded out on Po1 and Po20

C.

If multicast traffic is received on Po11 Switch2, the traffic is forwarded out only on Po20

Answers
C.

If multicast traffic is received on Po11 Switch2, the traffic is forwarded out only on Po20

D.

If multicast traffic is received on Po11 Switch2, the traffic is dropped.

Answers
D.

If multicast traffic is received on Po11 Switch2, the traffic is dropped.

Suggested answer: B

Explanation:

In a vPC (Virtual Port-Channel) configuration, multicast traffic is handled based on the vPC design and operational rules. When a host sends traffic to a multicast group, the vPC switches determine the forwarding path based on the source and the vPC domain configuration. If multicast traffic is received on a vPC member port, such as Po10 on Switch1, the traffic is typically forwarded out on all ports that are part of the same VLAN and have receivers interested in the multicast group, which includes Po1 and Po20 in this case. This ensures that the multicast traffic reaches all intended recipients across the vPC domain.

asked 10/10/2024
Loyston Mathias
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