TP-Link T1600G-18TS T1600G-18TSUN V2 CLI Reference Guide Guide - Page 140

Parameter v1 | v2 | v3-- Specify the IGMP version. By default, it is IGMP v3. v1: The switch works as an IGMPv1 Snooping switch. It can only process IGMPv1 messages from the host. Report messages of other versions are ignored. v2: The switch works as an IGMPv2 Snooping switch. It can process both IGMPv1 and IGMPv2 messages from the host. IGMPv3 messages are ignored. v3: The switch works as an IGMPv3 Snooping switch. It can process IGMPv1, IGMPv2 and IGMPv3 messages from the host. Command Mode Global Configuration Mode Privilege Requirement Only Admin, Operator and Power User level users have access to these commands. Example Specify the IGMP version as v2: Switch (config)# ip igmp snooping version v2 17.3 ip igmp snooping drop-unknown Description The ip igmp snooping drop-unknown command is used to configure the way how the switch processes multicast streams that are sent to unknown multicast groups as Discard. By default, it is Forward. To return to the default configuration, please use no ip igmp snooping drop-unknown command. Syntax ip igmp snooping drop-unknown no ip igmp snooping drop-unknown Command Mode Global Configuration Mode Privilege Requirement Only Admin, Operator and Power User level users have access to these commands. Example Specify the operation to process unknown multicast as discard: 119