1-24In configuration, make sure that the BS period is smaller than the BS timeout value.Configuring IPv6 Multicast Source RegistrationWithin an IPv6 PIM-SM domain, the source-side DR sends register messages to the RP, and theseregister messages have different IPv6 multicast source or IPv6 multicast group addresses. You canconfigure a filtering rule to filter register messages so that the RP can serve specific IPv6 multicastgroups. If an (S, G) entry is denied by the filtering rule, or the action for this entry is not defined in thefiltering rule, the RP will send a register-stop message to the DR to stop the registration process for theIPv6 multicast data.In view of information integrity of register messages in the transmission process, you can configure thedevice to calculate the checksum based on the entire register messages. However, to reduce theworkload of encapsulating data in register messages and for the sake of interoperability, this method ofchecksum calculation is not recommended.When receivers stop receiving data addressed to a certain IPv6 multicast group through the RP (that is,the RP stops serving the receivers of that IPv6 multicast group), or when the RP formally startsreceiving IPv6 multicast data from the IPv6 multicast source, the RP sends a register-stop message tothe source-side DR. Upon receiving this message, the DR stops sending register messagesencapsulated with IPv6 multicast data and starts a register-stop timer. When the register-stop timerexpires, the DR sends a null register message (a register message without encapsulated multicast data)to the RP. If the DR receives a register-stop message during the register probe time, it will reset itsregister-stop timer; otherwise, the DR starts sending register messages with encapsulated data againwhen the register-stop timer expires.The Register-Stop Timer is set to a random value chosen uniformly from the interval (0.5 timesregister_suppression_time, 1.5 times register_suppression_time) minus register_probe_time.Configure a filtering rule for register messages on all C-RP routers and configure them to calculate thechecksum based on the entire register messages. Configure the register suppression time and theregister probe time on all routers that may become source-side DRs.Follow these steps to configure register-related parameters:To do... Use the command... RemarksEnter system view system-view —Enter IPv6 PIM view pim ipv6 —Configure a filtering rule forregister messages register-policy acl6-numberOptionalNo register filtering rule bydefaultConfigure the device tocalculate the checksum basedon the entire register messagesregister-whole-checksumOptionalBased on the header of registermessages by defaultConfigure the registersuppression timeregister-suppression-timeout intervalOptional60 seconds by default
