The maximum number of seconds between successive samples of the counters associated with this data source. A sampling interval of 0 disables counter sampling. The agent is permitted to have minimum and maximum allowable values for the counter polling interval. A minimum interval lets the agent designer set an upper bound on the overhead associated with polling, and a maximum interval may be the result of implementation restrictions (such as counter size). In addition not all values between the maximum and minimum may be realizable as the sampling interval (again because of implementation considerations). The minimum sampling interval is 20, the maximum sampling interval is 120.