Starting Policy Processing; Processing The Classifier Result; Figure 7: Input Policy With Primary Stage And Auxiliary Substage - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - POLICY MANAGEMENT CONFIGURATION GUIDE 2010-10-04 Configuration Manual

Figure 7: Input Policy with Primary Stage and Auxiliary Substage

Starting Policy Processing

Processing the Classifier Result

Copyright © 2010, Juniper Networks, Inc.
The order of policy action execution for each attachment is:
Filter
1.
Modify (includes setting of color, traffic class, user packet class) and Log
2.
Rate limit profile/color
3.
Mark TOS
4.
Exception
5.
Forward
6.
Input and auxiliary-input classification operations, specified by the details of each policy,
are performed in parallel. Classifier inputs for both policies are determined concurrently
using the initial values of the classification terms. Policy attachments within a stage
cannot communicate between the input and auxiliary-input classification operations.
For example, any changes made by the input attachment to traffic-class, color, TOS, or
user packet class are not visible in the auxiliary-input policy classification. If this
communication is needed, it can only be done between different policy stages, rather
than within a single stage.
The results of the input policy actions are passed forward to the auxiliary-input policy
action processing. This means that a color-aware rate limit profile action in the auxiliary
substage recognizes any change in color caused by primary policy actions.
The classifier result of the input policy attachment is processed and a set of actions is
identified. When you configure filter, it is the first action taken and immediately discards
Chapter 6: Merging Policies
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