Alliant Networks CGW101, Руководство пользователя

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Using the Web Configuration Interface 802.11 User classification
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frame’s priority will be between 0 and 7, otherwise it will be -1 for a nonclassified frame.
Nonclassified frames are treated as the lowest priority frame.
These simple rules govern the classification rules in the order presented:
1. Rule 0 is applied first to the frame.
2. If the field does not exist in the frame, then the result is always FALSE. This is
determined by parsing through the frame. For example, an Ether II frame does not
contain an IP port and would fail if the rule required one.
3. If the field exists, then the operator is applied along with the provided values. If the result
is true, then the rule identified by the true index is used next. If the result is false, then the
rule identified by the false index is used next.
4. If a row does not exist, then this is equivalent to do nothing (see below).
Eventually a leaf node is reached. In which case, one of three actions can occur:
• The frame can be classified. A priority is assigned to the frame and it is then sent to the
next DISC.
•
The frame is dropped.
• Do nothing.
Even though the rules are conceptually a tree, they are organized in a table with six
columns. The table below shows how users can classify UDP frames not already classified
that are destined to ports between 1 and 90 to a priority of 3.
Index
Frame
Field
Operator Value1 Value2 True False
1 Priority == unassigned 2 5
2 IP == UDP 3 5
3 Dst Port Between 1 90 4 5