Click the Exhibit button.
You are using PIM-SM in your network and want to ensure that all available equal-cost paths are being used for
multicast traffic.
Referring to the exhibit, where must you configure the PIM join-load-balance parameter to achieve this goal?
A.
R2, R4, and R5
B.
R1, R2, R4, and R5
C.
R4
D.
R4 and R5
Explanation:
Incorrect Answers:
A, B: R2 is the RP. You configure PIM join load balancing on the non-RP routers in the PIM domain.
http://www.juniper.net/documentation/en_US/junos15.1/topics/task/configuration/mcast-pim-joinload-balance.html
What is the correct answer here? The two routers next to the receiver, R4 and R5.
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I think it is C
– In PIM sparse mode, it’s possible to load-balance PIM joins between equal-cost next hops.
Without the command set protocols pim join-load-balance, only one interface is used as the RPF interface towards the source ( or RP ).
By adding this command, multiple equal cost next hops can be used on a per-S,G-by-S,G basis.
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even I agree with C
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You configure PIM join load balancing on the non-RP routers in the PIM domain.
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/mcast-pim-join-load-balance.html
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When PIM join load balancing is enabled in a multicast VPN scenario with point-to-multipoint (P2MP) tunnels, the load balancing is achieved based on the join counts for the far-end PE routers, not for any intermediate P routers.
https://www.juniper.net/documentation/software/junos/junos93/swconfig-multicast/configuring-pim-join-load-balancing.html#id-join-load-bal-guidelines
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