3Com Switch 8800 Configuration Guide Chapter 27 IGMP Configuration27-8Table 27-10 Limiting multicast groups an interface can accessOperation CommandLimit the range of allowedmulticast groups on currentinterface (in VLAN interfaceview)igmp group-policy acl-number [ 1 | 2 | port{ interface_type interface_ num | interface_name }[ to { interface_type interface_ num |interface_name } ] ]Remove the filter set on theinterface (in VLAN interfaceview)undo igmp group-policy [ port { interface_typeinterface_ num | interface_name } [ to{ interface_type interface_ num |interface_name } ] ]Limit the multicast groups thatthe interface serves (inEthernet port view)igmp group-policy acl-number vlanvlanidCancel the filter configured onthe interface (in Ethernet portview)undo igmp group-policy vlan vlanidNote:Using the above two configuration methods to configure ports, you can obtain the sameresult. You can select any one.By default, no filter is configured, that is, all multicast groups are allowed on theinterface.The port keyword only takes effect on VLAN interfaces. The port specified by the portkeyword must belong to this VLAN interface. For the configuration in Ethernet port view,the port must belong to the VLAN interface specified by the command. Besides, IGMPis enabled on this VLAN interface. Otherwise, this command does not take effect.27.2.11 Deleting IGMP Groups Joined on an InterfaceThis configuration task is to delete all IGMP groups joined on all interfaces or specificinterfaces of the router, or to delete the IGMP groups at the specific address or in thespecific network segment on the specific interfaces of the router.Perform the following configuration in user view.Table 27-11 Deleting IGMP groups joined on an interfaceOperation CommandDelete IGMP groupsjoined on an interfacereset igmp group { all | interface vlan-interfaceinterface-number { all | group-address [ group-mask ] } }After a group is deleted, it can be joined on an interface again.
