Disabling Spt Switchover - H3C LS-3100-52P-OVS-H3 Operation Manual

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
Configure the register probe
time

Disabling SPT Switchover

If an S5500-EI series routing switch acts as an RP or the receiver-side DR, it initiates an SPT
switchover process (by default) upon receiving the first IPv6 multicast packet along the RPT. You can
disable the switchover from RPT to SPT.
Perform the following operations to disable the SPT switchover:
To do...
Enter system view
Enter IPv6 PIM view
Use the command...
system-view
pim ipv6
register-policy acl6-number
register-whole-checksum
register-suppression-timeou
t interval
probe-interval interval
Use the command...
system-view
pim ipv6
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
Optional
5 seconds by default
Remarks
—
—