The customer is configuring their switch to use IGMP snooping and would like to know which version to use.
Pelco Video Management
Endura video management system
IGMP has three versions -- 1, 2, and 3.
Endura viewing stations, by default, will send IGMP version 3 messages. However, all versions of IGMP are backwards compatible. So, you can configure your network equipment to use any version of IGMP and it will still work. However, older versions of IGMP are not as efficient as Version 3.