H3C S6812 Series Command Reference Manual page 1549

Usage guidelines
The rule numbering step sets the increment by which the system numbers rules automatically. If you
do not specify a rule ID when creating an ACL rule, the system automatically assigns it a rule ID. This
rule ID is the nearest higher multiple of the numbering step to the current highest rule ID, starting
from 0. For example, if the rule numbering step is 5 and the current highest rule ID is 12, the rule is
numbered 15.
The wider the numbering step, the more rules you can insert between two rules. Whenever the step
changes, the rules are renumbered, starting from 0. For example, if there are five rules numbered 0,
5, 9, 10, and 15, changing the step from 5 to 2 causes the rules to be renumbered 0, 2, 4, 6, and 8.
Examples
# Set the rule numbering step to 2 for IPv4 basic ACL 2000.
<Sysname> system-view
[Sysname] acl basic 2000
[Sysname-acl-ipv4-basic-2000] step 2
Related commands
display acl
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