Supports arbitrary pattern match classification. Up to 128 bytes of data within the first 128 bytes of a packet can be identified for pattern matching purposes. This object and the ntnSystemClfrPatternData object specify byte patterns and their position in a packet. When a packet is classified using this data, the appropriate bytes, or portions thereof, in the packet are compared against the byte patterns defined by the ntnSystemClfrPatternData attribute. If the data at the specified packet offset is the same, the packet is considered a match. The byte positions, and the pertinent bits within each identified byte, used for comparison purposes are specified using this attribute. The positions to be matched are identified by setting the appropriate bits to one. All other bits must be set to zero. For example, to specify that byte positions 5-8 and the high-order nibble (4 bits) of bytes 13-16 should be examined, this attribute would be set as follows: ntnSystemClfrPatternPosition (size 16): 00:00:00:00:FF:FF:FF:FF:00:00:00:00:0F:0F:0F:0F The target byte patterns would then be placed in bytes 5-8 and in portions of bytes 13-16 of the ntnSystemClfrPatternData attribute: ntnSystemClfrPatternData (size 16): 00:00:00:00:XX:XX:XX:XX:00:00:00:00:0Y:0Y:0Y:0Y Note that an implementation may not support pattern matching, also know as offset filtering, for the maximum number of bytes supported by the pattern match attributes. The number of bytes that can contain data for comparison purposes and the position of those bytes in relation to the start of a packet are thus implementation dependent. Use of this object and the associated ntnSystemClfrPatternData object invalidates the use of any other classification data in this and related (through the ntnClfrComponentTable) classifier entries. In other words, providing an explicit pattern overrides the implicit patterns defined when classification data is specified for other fields, such as the IP source address or EtherType classification attributes. A zero length string is used to indicate that explicit pattern matching is not requested. Version 1/2 attribute.