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Example: Configuring RP/DR Register Message Filters

Configure an RP filter to drop the register packets for multicast group range 224.1.1.0/24 from source address 10.10.94.1:



protocols {


pim {


rp {
rp-register-policy incoming-policy-for-rp;


local {
address 10.10.10.5;
}


}


}


}
policy-options {


policy-statement incoming-policy-for-rp {


from {
router-filter 224.1.1.0/24 orlonger;
source-address-filter 10.10.94.2/32 exact;
then reject;
}


}


}

Configure a DR filter to prevent sending register packets for group range 224.1.1.0/24 and source address 10.10.10.1/32:



protocols {


pim {


rp {
dr-register-policy outgoing-policy-for-dr;


static {
address 10.10.10.3;
}


}


}


}
policy-options {


policy-statement outgoing-policy-for-rp {


from {
router-filter 224.1.1.0/24 orlonger;
source-address-filter 10.10.10.1/32 exact;
then reject;
}


}


}

More complex register message filtering is possible. This example configures a policy expression to accept register messages for multicast group 224.1.1.5 but reject those for 224.1.1.1:



protocols {


pim {


rp {
rp-register-policy [ reject_224_1_1_1 | accept_224_1_1_5
];


local {
address 10.10.10.5;
}


}


}


}
policy-options {


policy-statement reject_224_1_1_1 {


from {
router-filter 224.1.1.0/24 orlonger;
source-address-filter 10.10.94.2/32 exact;
then reject;
}




policy-statement accept_224_1_1_5 {


term one {


from {
router-filter 224.1.1.5/32 exact;
source-address-filter 10.10.94.2/32 exact;
}


then accept;
}




term two {
then reject;
}


}


}


}

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