JN0-664: Service Provider Routing and Switching, ProfessionalDemo

By Juniper · Question Mode

QuestionQ11

IP Multicast

Click the Exhibit button.

Question Image

R4 is directly connected to both RPs, R2 and R3. R4 is presently sending all joins upstream to R3, but you want all joins to be sent to R2 instead.

Referring to the exhibit, which configuration change resolves this issue?

  • A Change the bootstrap priority on R2 to be higher than R3.
  • B Change the local address on R2 to be higher than R3.
  • C Change the default route in inet.2 on R4 from R3 as the next hop to R2.
  • D Change the group-range to be more specific on R2 than R3.
Explanation

PIM group-to-RP mappings are controlled by the advertised group ranges. R3’s 224.1.1.0/28 range is more specific than R2’s 224.1.1.0/24, so it is selected for groups in that range. Configuring a more-specific group range on R2 makes R2 the selected RP; RP priority and the unicast next hop do not override that group-range mapping. Juniper: group-ranges

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