Operation Manual – MulticastH3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration7-29To do... Use the command... RemarksConfigure a filtering rulefor register messagesregister-policyacl-numberOptionalNo register filtering rule bydefaultConfigure the device tocalculate the checksumbased on the entireregister messagesregister-header-checksumOptionalBy default, the checksumis calculated based on theheader of registermessagesConfigure the registersuppression timeout timeregister-suppression-timeout intervalOptional60 seconds by defaultConfigure the probe time probe-interval interval Optional5 seconds by defaultNote: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 the DR election and on the C-RPsthat may win RP elections.7.3.7 Disabling RPT-to-SPT SwitchoverInitially, multicast traffic flows along an RPT to the receivers. By default, the last-hopswitch initiates an RPT-to-SPT switchover process when it receives the first multicastpacket from the RPT. You can disable RPT-to-SPT switchover through the followingconfiguration.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.
