ntnSystemClfrPatternPosition

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.

MIB

NTN-QOS-POLICY-EVOL-PIB

OID

.1.3.6.1.4.1.45.4.7.1.5.6.1.7

Type

column

Access

readwrite

Status

current

Parent

ntnSystemClfrEntry