This object enables or disables an IGMP or IGMP Proxy interface; setting it to disable saves the interface's configuration without discarding it. Administrators use this to temporarily turn off multicast processing on an interface, for example during maintenance, while preserving all its IGMP settings for when it's re-enabled. For instance, a technician replacing a switch downstream of a multicast-enabled interface might disable IGMP on that interface first, then re-enable it once the new hardware is verified.