Click the exhibit button.
[edit protocols pim]
user@R1# show
rp {
bootstrap {
family inet {
priority 250;
}
}
local {
address 10.220.1.1;
priority 1;
group-ranges {
224.1.1.11/32;
224.0.0.0/4;
}
}
}
interface all;
interface fxp0.0 {
disable;
}
[edit protocols pim]
user@R4# show
rp {
bootstrap {
family inet {
priority 249;
}
}
local {
address 10.220.1.4;
priority 5;
group-ranges {
224.1.1.12/32;
224.0.0.0/4;
}
}}
interface all;
interface fxp0.0 {
disable;
}
Referring to the exhibit, which router will be the RP?
A.
R4 for all groups
B.
R1 for group 224.1.1.11 and R4 for all other groups
C.
R1 for all groups
D.
R4 for group 224.1.1.12 and R1 for all other groups
Explanation:
A priority of 1 means the routing device has the least chance of becoming a designated router. Here R1 has
priority 1, while R4 has priority 5. R4 will be elected the designated router and the rendezvous point (RP) for
both address ranges.
Note: In a shared tree, the root of the distribution tree is a router, not a host, and is located somewhere in the
core of the network. In the primary sparse mode multicast routing protocol, Protocol Independent Multicast
sparse mode (PIM SM), the core router at the root of the shared tree is the rendezvous point (RP).
http://www.juniper.net/documentation/en_US/junos15.1/topics/example/ospf-designated-routerelection-configuring.html