3Com 7700 Configuration Manual page 193

PIM-SM Configuration 185
Configure LS_C:
1 Enable PIM-SM.
[SW7700] multicast routing-enable
[SW7700] vlan 10
[SW7700-vlan10] port Ethernet 1/0/2 to Ethernet 1/0/3
[SW7700-vlan10] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 10
[SW7700-vlan-interface10] pim sm
[SW7700-vlan-interface10] quit
[SW7700] vlan 11
[SW7700-vlan11] port Ethernet 1/0/4 to Ethernet 1/0/5
[SW7700-vlan11] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 11
[SW7700-vlan-interface11] pim sm
[SW7700-vlan-interface11] quit
[SW7700] vlan 12
[SW7700-vlan12] port Ethernet 1/0/6 to Ethernet 1/0/7
[SW7700-vlan12] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 12
[SW7700-vlan-interface12] pim sm
[SW7700-vlan-interface12] quit