The value of the object tIPFilterParamsExtPktLenVal1 specifies the packet length value1 to be compared to the value of the Total Length field of an IP packet header that has hit this filter's entry. The way how the value of this object is used depends on the value of the object tIPFilterParamsExtPktLenOper. The value of this object can be set to a non-default value only if the value of the object tIPFilterParamsExtPktLenOper is other than 'none (0)'. If the value of tIPFilterParamsExtPktLenOper is 'range (2)' then the value of this object must be less than the value of tIPFilterParamsExtPktLenVal2. If the value of tIPFilterParamsExtPktLenOper is 'lt (3)' then the value of this object can be set in range 1..65535. If the value of tIPFilterParamsExtPktLenOper is 'gt (4)' then the value of this object can be set in range 0..65534. If both the values of the objects tIPFilterParamsExtPktLenOper and tIPFilterParamsExtPktLenVal1 need to be changed then it must be done in the same SET SNMP request. Note that the value of this object is silently cleared by the system if tIPFilterParamsAction is set to a value other than 'drop (1)' or if tIPFilterParamsExtPktLenOper is set to 'none (0)' or if tIPFilterParamsExtTTLOper is set to a value other than 'none (0)'.