4-15Typically, you need to configure the above-mentioned parameters on the receiver-side DR and the RPonly. Since both the DR and RP are elected, however, you should carry out these configurations on therouters that may win DR election and on the C-RPs that may win RP election.Configuring Common PIM ParametersComplete the following tasks to configure common PIM parameters:Task RemarksConfiguring a Multicast Data Filter OptionalConfiguring the Hello Interval OptionalConfiguring PIM Neighbors OptionalConfiguring Multicast Source Lifetime OptionalConfiguring PIM Prune Delay OptionalClearing the Related PIM Entries OptionalConfiguring a Multicast Data FilterNo matter in a PIM-DM domain or a PIM-SM domain, routers can check passing-by multicast databased on the configured filtering rules and determine whether to continue forwarding the multicast data.In other words, PIM routers can act as multicast data filters. These filters can help implement trafficcontrol on one hand, and control the information available to receivers downstream to enhance datasecurity on the other hand.Follow these steps to configure a multicast data filter:To do... Use the command... RemarksEnter system view system-view —Enter PIM view pim —Configure a multicast groupfilter source-policy acl-number OptionalNo multicast data filter by defaultz If you have configured a basic ACL, the switch filters all the received multicast packets based onthe multicast source address, and discards packets that fail source address match.z If you have configured an advanced ACL, the switch filters all the received multicast packets basedon the multicast source address and group address, and discards packets that fail source andgroup address match.
