Configuring PIM Common Information 653n The commands introduced in this section are to be configured on all routers in thePIM domain.c CAUTION:■ Make sure that the same SSM group range is configured on all routers in theentire domain. Otherwise, multicast information cannot be delivered throughthe SSM model.■ When a member of a multicast group in the SSM group range sends anIGMPv1 or IGMPv2 report message, the device does not trigger a (*, G) join.Configuring PIMCommon Informationn For the configuration tasks described in this section■ Configurations performed in PIM view are effective to all interfaces, whileconfigurations performed in interface view are effective to the current interfaceonly.■ If the same function or parameter is configured in both PIM view and interfaceview, the configuration performed in interface view is given priority, regardlessof the configuration sequence.PIM CommonInformationConfiguration Task ListComplete these tasks to configure PIM common information:ConfigurationPrerequisitesBefore configuring PIM common information, complete the following tasks:■ Configure any unicast routing protocol so that all devices in the domain areinteroperable at the network layer.■ Configure PIM-DM, or PIM-SM, or PIM-SSM.Before configuring PIM common information, prepare the following data:■ An ACL rule as multicast data filter■ Priority for DR election (global value/interface level value)■ PIM neighbor timeout time (global value/interface value)To do… Use the command… RemarksEnter system view system-view -Enter PIM view pim -Configure the SSM grouprangessm-policy acl-number Optional232.0.0.0/8 by defaultTask Remarks“Configuring a PIM Filter” on page 654 Optional“Configuring PIM Hello Options” on page 654 Optional“Configuring PIM Common Timers” on page 656 Optional“Configuring Join/Prune Message Limits” on page 657 Optional
