Operation Manual – MulticastH3C S5600 Series Ethernet Switches Chapter 4 PIM Configuration4-17To do... Use the command... RemarksConfigure to filter theregistration packetsfrom RP to DRregister-policyacl-numberRequiredBy default, the switch doesnot filter the registrationpackets from DR.Caution:Only the registration packets matching the permit command of ACLs can be accepted.When an invalid ACL is defined, RP will reject all the registration packets.4.3.5 Disabling RPT-to-SPT SwitchoverInitially, a PIM-SM-enabled multicast device forwards multicast packets through an RPT.By default, the last-hop switch initiates an RPT-to-SPT switchover process. You canalso disable RPT-to-SPT switchover through the configuration.Follow these steps to disable RPT-to-SPT switchover:To do... Use the command... RemarksEnter system view system-view —Enter PIM view pim —Disable RPT-to-SPTswitchoverspt-switch-thresholdinfinity [ group-policyacl-number [ orderorder-value ] ]OptionalBy default, the deviceswitches to the SPTimmediately after itreceives the first multicastpacket from the RPT.Note:Typically, you need to configure the above-mentioned parameters on the receiver-sideDR and the RP only. Since both the DR and RP are elected, however, you should carryout these configurations on the routers that may win DR election and on the C-RPs thatmay win RP election.4.4 Configuring Common PIM ParametersComplete the following tasks to configure common PIM parameters:
