This value sets, in milliseconds and always a multiple of 10, the interval over which bytes forwarded on this Virtual Interface are measured for rate-limiting purposes; it has no meaning when csOrionVIfRateLimitNumBytes is 0, and must be set whenever that object is. An admin tunes it together with the byte limit to define how granular the rate-limiting measurement window is. For example, setting csOrionVIfRateLimitInterval to 1000 measures the configured byte limit over one-second windows rather than a longer or shorter period.