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Example: Configuring Externally Facing 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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