Referring to the exhibit, which statement is correct?
A.
Only multicasts packets (224.0.1.39) are allowed on the input and output direction.
B.
Auto-RP discovery messages are filtered in the input and output direction.
C.
Rendezvous point announcements are filtered in the output direction.
D.
This filter does not work because the input or output parameter is missing.
I think answer should be A
Here is some reference material
https://www.juniper.net/techpubs/en_US/junos10.0/information-products/topic-collections/config-guide-multicast/multicast-scope-creation-overview.html
https://www.juniper.net/techpubs/en_US/junos10.0/information-products/topic-collections/config-guide-multicast/multicast-creating-a-named-scope-for-multicast-scoping.html
http://www.juniper.net/techpubs/en_US/junos/topics/example/mcast-named-scope.html
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Sorry. Found new information.
I now think answer is C
http://www.juniper.net/techpubs/en_US/junos11.4/topics/topic-map/mcast-admin-scoping.html
Example: Configuring Externally Facing PIM Border Routers
In this example, you add the scope statement at the [edit routing-options multicast] hierarchy level to prevent auto-RP traffic from “leaking” into or out of your PIM domain. Two scopes defined below, auto-rp-39 and auto-rp-40, are for specific addresses. The scoped-range statement defines a group range, thus preventing group traffic from leaking.
routing-options {
multicast {
scope auto-rp-39 {
prefix 224.0.1.39/32;
interface t1-0/0/0.0;
}
scope auto-rp-40 {
prefix 224.0.1.40/32;
interface t1-0/0/0.0;
}
scope scoped-range {
prefix 239.0.0.0/8;
interface t1-0/0/0.0;
}
}
}
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