H3C S5500-EI - Disabling the Switchover to SPT

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multicast data from the multicast source along the SPT, the RP sends a register-stop message to the
source-side DR. After receiving this message, the DR stops sending register messages encapsulated with
multicast data and starts a register-stop timer. Before 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 might become source-side DRs.
To configure register-related parameters:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter public network PIM view
or VPN instance PIM view.
pim [ vpn-instance
vpn-instance-name ]
N/A
3. Configure a filtering rule for
register messages.
register-policy acl-number
Optional.
No register filtering rule by default.
4. Configure the device to
calculate the checksum based
on the entire register
messages.
register-whole-checksum
Optional.
By default, the checksum is
calculated based on the header of
register messages.
5. Configure the register
suppression time.
register-suppression-timeout
interval
Optional.
60 seconds by default.
6. Configure the register probe
time.
probe-interval interval
Optional
5 seconds by default.
Disabling the switchover to SPT
CAUTION:
If the switch is an RP, disablin
g
switchover to SPT mi
g
ht cause multicast traffic forwardin
g
failures on the
source-side DR. When disabling switchover to SPT, be sure you fully understand its impact on your
network.
If the switch acts as an RP or the receiver-side DR, it initiates a switchover to SPT process by default upon
receiving the first multicast packet along the RPT. You can disable the switchover from RPT to SPT.
To disable the switchover to SPT:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A