User's Manual

Table Of Contents
318
Users Manual of CS-6306R
IGMP-snooping can run on up to 16 VLANs.
To enable IGMP-snooping on VLAN3, you must first run no ip IGMP-snooping to disable IGMP-snooping of
all VLANs, then configure ipIGMP-snooping VLAN 3 and save configuration.
30.1.1.2 Adding/Deleting Static Multicast Address of VLAN
Hosts that do not support IGMP can receive corresponding multicast message by configuring the static
multicast address.
Perform the following configuration in global configuration mode:
Command Description
ip igmp-snoopingvlanvlan_id staticA.B.C.D
interfaceintf
Adds static multicast address of VLAN.
no ip igmp-snooping vlanvlan_id staticA.B.C.D
interfaceintf
Deletes static multicast address of
VLAN.
30.1.1.3 Configuring immediate-leave of VLAN
When the characteristic immediate-leave is configured, the switch can delete the port from the port list of the
multicast group after the switch receives the leave message. The switch, therefore, does not need to enable
the timer to wait for other hosts to join the multicast. If other hosts in the same port belongs to the same group
and their users do not want to leave the group, the multicast communication of these users may be affected.
In this case, the immediate-leave function should not be enabled.
Perform the following configuration in global configuration mode:
Command Description
ip igmp-snooping vlan vlan_id immediate-leave
Configures the immediate-leave
function of the VLAN.
no ip igmp-snooping vlanvlan_idimmediate-leave
Sets immediate-leave of VLAN to its
default value.
The immediate-leave characteristic of VLAN is disabled by default.