Indicate the mask to be logical-ANDed with the destination address before being compared to the value in the ipCidrRouteDest field. For those systems that do not support arbitrary subnet masks, an agent constructs the value of the ipCidrRouteMask by reference to the IP Ad- dress Class. Any assignment (implicit or otherwise) of an instance of this object to a value x must be rejected if the bitwise logical-AND of x with the value of the corresponding instance of the ipCidrRouteDest object is not equal to ipCidrRoute- Dest. The mask is also used to specify the range of IP addresses. For Eg. Destination Net = 128.11.0.0 Net Mask = 255.255.0.0 specifies the range of routes starting from 128.11.0.0 to 121.11.255.255. For specifying all routes give Destination Net = 0.0.0.0 Net Mask = 255.255.255.255