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multicast data) to the RP. If the DR receives a register-stop message during the register probe time,
it resets 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 DR.
To configure register-related parameters:
Step
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 switchover to SPT
CAUTION:
If the switch is an RP, disabling switchover to SPT might cause multicast traffic forwarding 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 the receiver-side DR or the RP, it initiates a switchover to SPT 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:
Step
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.
Disable the switchover to
SPT.
spt-switch-threshold
infinity
[
group-policy
acl-number
[
order
order-value
] ]
Optional.
By default, the device switches to the
SPT immediately after it receives the
first multicast packet.
