JN0-649 · Question #109
Click the Exhibit button. Referring to the exhibit, the source is currently sending multicast traffic using group 224.1.1.1, which is being received by R1. R2 is not receiving PIM register messages…
The correct answer is A. Tunnel services have not been enabled on R1. The multicast traffic being sent by the source must be encapsulated into a PIM register packet. If the tunneling services under the chassis stanza is not configured, a PE (PIM Encapsulation interface) will not be present in the multicast first hop router. Anyway long story…
Question
Click the Exhibit button. Referring to the exhibit, the source is currently sending multicast traffic using group 224.1.1.1, which is being received by R1. R2 is not receiving PIM register messages. What would be the cause of this problem?
Exhibit
Options
- ATunnel services have not been enabled on R1.
- BAll routers have not been configured with the same Auto-RP discovery group.
- CR5 has not received an IGMP report of 224.1.1.1.
- DA(*,G) tree has not been built yet.
How the community answered
(40 responses)- A78% (31)
- B8% (3)
- C3% (1)
- D13% (5)
Explanation
The multicast traffic being sent by the source must be encapsulated into a PIM register packet. If the tunneling services under the chassis stanza is not configured, a PE (PIM Encapsulation interface) will not be present in the multicast first hop router. Anyway long story short, tunneling services must be turned on or else you will not get PIM register messages sent to the RP. https://kb.juniper.net/InfoCenter/index?page=content&id=KB13329
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