Configuring Ipv6 Multicast Source Registration - 3Com S7906E Configuration Manual

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 IPv6 multicast data 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...
Enter system view
Enter IPv6 PIM view
Configure a filtering rule for
register messages
Configure the device to
calculate the checksum based
on the entire register messages
Configure the register
suppression time
Use the command...
system-view
pim ipv6
register-policy acl6-number
register-whole-checksum
register-suppression-timeou
t interval
1-24
Remarks
—
—
Optional
No register filtering rule by
default
Optional
Based on the header of register
messages by default
Optional
60 seconds by default