3Com S7906E - Switch, Руководство по настройке

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receiving multicast data from the 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 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 public instance PIM view
or VPN instance PIM view pim [ vpn-instance
vpn-instance-name ]
—
Configure a filtering rule for
register messages
register-policy acl-number
Optional
No register filtering rule by
default
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
Configure the register
suppression time register-suppression-timeou
t interval
Optional
60 seconds by default
Configure the register probe
time
probe-interval interval
Optional
5 seconds by default
Disabling SPT Switchover
If an S7900E series routing switch acts as an RP or the receiver-side DR, it initiates an STP switchover
process (by default) upon receiving the first multicast packet along the RPT. You can disable the
switchover from RPT to SPT.
Follow these steps to disable SPT switchover:
To do... Use the command... Remarks
Enter system view system-view —
Enter public instance PIM view
or VPN instance PIM view pim [ vpn-instance
vpn-instance-name ]
—