Click the Exhibit button. R4 is directly connected to both RPs (R2 and R3). R4 is currently sending all joins upstream to R3 but you want all joins to go to R2 instead. Referring to the exhibit, which configuration change will solve 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.
A - Priority
See the statement copied/pasted below from the information at this URL: https://www.juniper.net/documentation/us/en/software/junos/multicast/topics/topic-map/mcast-pim-bootstrap-router.html
"By default, each routing device has a bootstrap priority of 0, which means the routing device can never be the bootstrap router. The routing device with the highest priority value is elected to be the bootstrap router. In the case of a tie, the routing device with the highest IP address is elected to be the bootstrap router. A simple bootstrap configuration assigns a bootstrap priority value to a routing device."
D is correct, check this out https://higherlogicdownload.s3.amazonaws.com/JUNIPER/MigratedInlineFiles/9531b1e0a25c46edaaa976789ad6305e_697bd1d7acea48deb9bd00536487d7d4
When two RPs advertise the exact same groups then we will prefer the RP with the highest priority. Unlike the BSR selection, highest priority for RP selection means the lowest priority value (0 is the highest priority). The priority is a value we can configure on the RP.
D is Correct
Absolutely priority.
Group can exclude only.
My R3 in lab is R3 in question. My R4 in lab is R2 in question
root@R4# set rp bootstrap family inet priority 220
Output on other router directly connected to both
address-family INET
RP address Type Mode Holdtime Timeout Groups Group prefixes
192.168.0.3 bootstrap sparse 150 131 0 224.0.0.0/4
192.168.0.4 bootstrap sparse 150 131 2 224.0.0.0/4 <<<<<<<<<<< 2 GROUPS
Group: 239.2.2.2
Source: *
RP: 192.168.0.4
Flags: sparse,rptree,wildcard
Upstream interface: ge-0/0/4.0 <<<<< To my R4 (R2 in question)
Group: 239.1.1.1
Source: *
RP: 192.168.0.4
Flags: sparse,rptree,wildcard
Upstream interface: ge-0/0/4.0 <<<<<< To my R4 (R2 in question)
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
a65ecbc
Highly Voted 1 year, 1 month agobradpope
Most Recent 6 days agoTony87
5 months, 3 weeks agoGuru29
8 months agosolen003
10 months, 2 weeks agozineeddine
10 months, 2 weeks ago