S7610接口配置组播SM后，没有组播流，请问下怎么配置组播

vlan 120

 description STB

 igmp-snooping enable

 pim-snooping enable

#interface Vlan-interface120

 description STB

 ip address 10.192.8.254 255.255.255.0

 pim sm

 interface Ten-GigabitEthernet0/0/1

 port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 2021

 speed 1000 

 duplex full

 interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 2022

 speed 1000 

 duplex full

 interface Vlan-interface2021

 description to-core9312-1-11/0/18

 ip address 10.192.66.102 255.255.255.252

 pim sm

 packet-filter 3101 inbound

 interface Vlan-interface2022

 description to-core9312-2-11/0/18

 ip address 10.192.66.106 255.255.255.252

 pim sm

 packet-filter 3101 inbound

 multicast routing

#

pim

 static-rp 218.1.0.10