The unknown lookup response time in seconds in which Unknown Multicast Groups dynamically learned with traffic snooping are traffic checked. So this is the time in which response traffic to the Trafficsnooper allowing the update of unknown multicast group aging timer. This variable enables the checking of bursty unknown multicast traffic. Small values lead to bad traffic checking but few snooper load and large values lead to good traffic checking but more snooper load. The default is 10 seconds and the range is 1 to 3598 seconds.