H3C Technologies H3C S7500E Series Switches - Manual (Page 169)

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To do... Use the command... Remarks
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-timeout
interval
Optional
60 seconds by default
Configure the register probe
time
probe-interval interval
Optional
5 seconds by default
Disabling SPT Switchover
If an S7500E 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 ]
—
Disable the SPT switchover
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.
For an S7500E Series Ethernet switch, once a multicast forwarding entry is created,
subsequent multicast data will not be encapsulated in register messages before being
forwarded even if a register outgoing interface is available. Therefore, to avoid forwarding
failure, do not use spt-switch-threshold infinity command on a switch that may become an
RP (namely, a static RP or a C-RP).