Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 769)

IGMP Snooping Commands
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 31.31
ip igmp ssm-map enable
Use this command to enable Source Specific Multicast (SSM) mapping on the device.
Use the no variant of this command to disable SSM mapping.
Syntax ip igmp ssm-map enable
no ip igmp ssm-map enable
Mode Global Configuration
Usage This command applies to VLAN interfaces configured for IGMP.
Example To enable SSM on the switch enter the commands:
Related Commands ip igmp ssm-map static
awplus# configure terminal
awplus(config)# ip igmp ssm-map enable