H3C S5500-EI Configuration Manual page 83

messages are suppressed. To solve this problem, disable the join suppression function on all PIM-capable
routers that connect to the PIM snooping-capable switch in the VLAN.
Solution
Use the pim hello-option neighbor-tracking command to enable the neighbor tracking function on
1.
the interfaces of PIM routers that connect to the PIM snooping-capable switch.
If a PIM-capable router cannot be enabled with the neighbor tracking function, you have to disable
2.
PIM snooping on the switch.
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