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KSZ9567R

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Each of the 16 processing entries is used to link any number of matching rules (specified in RuleSet) to any one action

rule (specified in FRN). When there are multiple matching rules in a RuleSet, those rules are AND'ed together. Only if

all of those matching results are true will the FRN action be taken.

It is also possible to configure the ACL table so that multiple processing entries specify the same action rule. In this way,

the final matching result is the OR of the matching results from each of the multiple RuleSets.

The 16 ACL rules represent an ordered list, with entry #0 having the highest priority and entry #15 having the lowest

priority. All matching rules are evaluated. If there are multiple true match results and multiple corresponding actions, the

highest priority (lowest numbered) of those actions will be the one taken.

4.4.18.1

Processing Entry Description

The Processing Entry consists of two parameters as described in Table 4-15.

The examples in Figure 4-7 are interpreted as follows:

• Rule #0: Test the matching rule entry #0. If true, apply action rule entry #0.

• Rule #1: Test the matching rule entry #1. If true, apply action rule entry #0.

TABLE 4-15:

ACL PROCESSING ENTRY PARAMETERS

Parameter

Description

FRN[3:0]

First Rule Number

Pointer to an Action rule entry. Possible values are 0 to 15. If all Matching rules speci-

fied in the RuleSet are evaluated true, then this is the resulting Action rule.

RuleSet[15:0]

Specifies a set of one or more Matching rule entries.

RuleSet has one bit for each of the 16 Matching rule entries. If multiple Matching rules

are selected, then all conditions will be AND'ed to produce a final match result.

0 = Matching rule not selected

1 = Matching rule selected

FIGURE 4-7:

ACL STRUCTURE AND EXAMPLE RULE VALUES

FRN

#15

#14

#13

#12

#11

#10

none

4, 5, 6

none

7, 11

none

RuleSet

Processing Field

Entry Number

Entry #0

Entry #1

Entry #2

Entry #3

Entry #4

Entry #5

Entry #6

Entry #7

Entry #8

Entry #9

Entry #10

Entry #11

Entry #12

Entry #13

Entry #14

Entry #15

Entry #0

Entry #1

Entry #2

Entry #3

Entry #4

Entry #5

Entry #6

Entry #7

Entry #8

Entry #9

Entry #10

Entry #11

Entry #12

Entry #13

Entry #14

Entry #15

Action Rule

Matching Rule

Action Field

AND

When counter

function is enabled

in Matching Rule.

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