Enabling And Disabling The Igmp Zapping; Limiting Igmp Multicast Groups - Alcatel-Lucent OmniSwitch 9900 Series Network Configuration Manual

Configuring IP Multicast Switching
Or, as an alternative, enter the following commands to restore the IGMP spoofing to its default setting:
-> no ip multicast vlan 2 spoofing
-> no ip multicast service 10 spoofing

Enabling and Disabling the IGMP Zapping

By default, IGMP zapping (i.e., processing membership and source filter removals immediately without
waiting for the specified time period for the protocol – this mode facilitates IP TV applications looking for
quick changes between IP multicast groups) is disabled on a switch. The following subsections describe
how to enable and disable IGMP zapping by using the
Enabling the IGMP Zapping
To enable IGMP zapping on the system if no VLAN or SPB service is specified, use the
zapping command as shown below:
-> ip multicast zapping enable
You can also enable IGMP zapping on the specified VLAN or SPB service by entering:
-> ip multicast vlan 2 zapping enable
-> ip multicast service 10 zapping enable
Disabling the IGMP Zapping
To disable IGMP zapping on the system if no VLAN or SPB service is specified, use the
zapping command as shown below:
-> ip multicast zapping disable
Or, as an alternative, enter the following command to restore the IGMP zapping to its default setting:
-> no ip multicast zapping
You can also disable IGMP zapping on the specified VLAN or SPB service by entering:
-> ip multicast vlan 2 zapping disable
-> ip multicast service 10 zapping disable
Or, as an alternative, enter the following commands to restore the IGMP zapping to its default setting:
-> no ip multicast vlan 2 zapping
-> no ip multicast service 10 zapping

Limiting IGMP Multicast Groups

By default there is no limit on the number of IGMP groups that can be learned on a port/VLAN/SPB
service instance. A maximum group limit can be set on a port, VLAN, SPB service, or on a global level to
limit the number of IGMP groups that can be learned. Once the configured limit is reached, a configurable
action decides whether the new IGMP report is dropped or replaces an existing IGMP membership.
The maximum group limit can be applied globally, per VLAN, per SPB service, or per port. Port settings
override VLAN and SPB service settings, which override global settings.
If the maximum number of groups is reached, an action can be configured to either drop the new
membership request or replace an existing group membership as shown below.
OmniSwitch AOS Release 8 Network Configuration Guide
ip multicast zapping command.
December 2017
Modifying IPMS Parameters
ip multicast
ip multicast
page 25-23