IGMP Configuration Commands 609DescriptionUse the igmp group-policy command to configure the filtering rule of multicastgroups on a specified VLAN so as to control the access to IP multicast groups. Youcan configure only one ACL rule for each VLAN, and the new configured rule willreplace the old one.Use the undo igmp group-policy command to cancel the configuration.By default, no filtering rule is set in a VLAN. In this case, a host can join anymulticast group.Example# Create ACL2001 and configure the flow rule for basic ACL, using the source IPaddress serves as the destination multicast address. system-viewSystem View: return to User View with Ctrl+Z.[SW8800]acl number 2001[3Com-acl-basic-2001]rule 0 permit source 224.1.1.1 0[3Com-acl-basic-2001]quit# Create VLAN 2. system-viewSystem View: return to User View with Ctrl+Z.[SW8800]vlan 2# Configure the filtering rule of multicast groups on VLAN2.[3Com-vlan2]igmp group-policy 2001# Cancel the filtering rule in VLAN2.[3Com-vlan2]undo igmp group-policyigmp host-join port Syntaxigmp host-join group-address port interface-type interface- number [ to {interface-type interface- number ]undo igmp host-join group-address port { interface-type interface-number [ to {interface-type interface- number ]ViewInterface viewParametergroup-address: Multicast address of the multicast group that an interface will join.interface-type interface-number [ to interface-type interface-number ]: Specifiesthe port under the interface.DescriptionUse the igmp host-join command to enable a port in the interface of an Ethernetswitch to join a multicast group.
