H3C Technologies H3C S7500E Series Switches - Manual (Page 377)

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In configuration, make sure that the BS period is smaller than the BS timeout value.
Configuring IPv6 Multicast Source Registration
Within an IPv6 PIM-SM domain, the source-side DR sends register messages to the RP, and
these register messages have different IPv6 multicast source or IPv6 multicast group
addresses. You can configure a filtering rule to filter register messages so that the RP can
serve specific IPv6 multicast groups. If an (S, G) entry is denied by the filtering rule, or the
action for this entry is not defined in the filtering rule, the RP will send a register-stop message
to the DR to stop the registration process for the IPv6 multicast data.
In view of information integrity of register messages in the transmission process, you can
configure the device to calculate the checksum based on the entire register messages.
However, to reduce the workload of encapsulating data in register messages and for the sake of
interoperability, this method of checksum 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 starts receiving register messages with IPv6 multicast data encapsulated from the IPv6
multicast source, the RP sends a register-stop message to the source-side DR. Upon receiving
this message, the DR stops sending register messages encapsulated with IPv6 multicast data
and starts a register-stop timer. When the register-stop timer expires, 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 its register-stop
timer; otherwise, the DR starts sending register messages with encapsulated data again when
the register-stop timer expires.
The Register-Stop Timer is set to a random value chosen uniformly from the interval (0.5 times
register_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 the checksum based on the entire register messages. Configure the register
suppression time and the register probe time on all routers that may become source-side DRs.
Follow these steps to configure register-related parameters:
To do... Use the command... Remarks
Enter system view system-view —
Enter IPv6 PIM view pim ipv6 —
Configure a filtering rule for
register messages
register-policy acl6-number
Optional
No register filtering rule by
default