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[Note]
When fast-leave is enabled, the entry for IGMP group membership are deleted immediately after the IGMPv2 Leave Group
message is received.
If there are multiple multicast receivers on the VLAN, fast-leave should not be enabled.
[Example]
Enable fast-leave for multicast groups on VLAN #2 within the range of 225.192.20.0 to 225.192.20.255.
SWX3220(config)#interface vlan2
SWX3220(config-if)#ip igmp immediate-leave group-list 1
SWX3220(config-if)#exit
SWX3220(config)#access-list 1 permit any 225.192.20.0 0.0.0.255 any
8.5.10 Set source address check for IGMP packets
[Syntax]
ip igmp check source-address type
no ip igmp check source-address
[Parameter]
type : Address check operations
Setting value Description
disable Disables source address checking
enable Enables source address checking
[Input mode]
interface mode
[Description]
If disable is specified, this disables IGMP packet (Report/Leave message) source address checking for the applicable interface.
If this command is executed using the "no" syntax or when enable is specified, source address checking is enabled.
Default setting is enabled.
When source address checking is enabled, this checks the source IP address for IGMP packets; and if the address falls outside
of the subnet address range to which the receiving interface belongs, the IGMP packet is discarded.
[Note]
Address checks will not be performed on IGMP packets with a source IP address of 0.0.0.0.
[Example]
Disable source address checking for IGMP.
SWX3220(config)# interface vlan2
SWX3220(config-if)# ip igmp check source-address disable
8.5.11 Set limit multicast group membership
[Syntax]
ip igmp access-group listnum
no ip igmp access-group
[Parameter]
listnum : <1-2000>
ID of IPv4 access list
[Initial value]
none
[Input mode]
interface mode
388 | Command Reference | IP multicast control