Westermo MDI-112-F4G - Manual (Page 110)

106
4.8.3 Unknown Multicast
After enabled IGMP Snooping, the known multicast can be filtered by IGMP
Snooping mechanism and forwarded to the member ports of the known multicast
groups. The other multicast streams which are not leant is so-called unknown
multicast, the switch decide how to forward them based on the setting of this
page.
Send to Query Ports: The unknown multicast will be sent to the Query ports. The
Query port means the port received the IGMP Query packets and it is usually the
uplink port on the switch.
Send to All Ports: The unknown multicast will be flooded to all ports even if they
are not member ports of the groups.
Discard: The unknown multicast will be discarded. Non-member ports will not
receive the unknown multicast streams.
4.8.4 CLI Commands of the Multicast Filtering
Command Lines of the multicast filtering configuration
Feature Command Line
IGMP Snooping
IGMP Snooping - Global Switch(config)# ip igmp snooping
IGMP snooping is enabled globally. Please specify
on which vlans IGMP snooping enables
IGMP Snooping - VLAN Switch(config)# ip igmp snooping vlan
VLANLIST allowed vlan list
all all existed vlan
Switch(config)# ip igmp snooping vlan 1-2
IGMP snooping is enabled on VLAN 1-2.
Disable IGMP Snooping -
Global
Switch(config)# no ip igmp snooping
IGMP snooping is disabled globally ok.