1-3ACL StepCurrently, the Web interface does not support ACL step configuration.Meaning of the stepThe step defines the difference between two neighboring numbers that are automatically assigned toACL rules by the device. For example, with a step of 5, rules are automatically numbered 0, 5, 10, 15,and so on. By default, the step is 5.Whenever the step changes, the rules are renumbered, starting from 0. For example, if four rules arenumbered 0, 5, 10, and 15 respectively, changing the step from 5 to 2 will cause the rules to berenumbered 0, 2, 4, and 6.Benefits of using the stepWith the step and rule numbering/renumbering mechanism, you do not need to assign numbers to ruleswhen defining them. The system will assign a newly defined rule a number that is the smallest multipleof the step bigger than the current biggest number. For example, with a step of five, if the biggestnumber is currently 28, the newly defined rule will get a number of 30. If the ACL has no rule definedalready, the first defined rule will get a number of 0.Another benefit of using the step is that it allows you to insert new rules between existing ones asneeded. For example, after creating four rules numbered 0, 5, 10, and 15 in an ACL with a step of five,you can insert a rule numbered 1.Configuring an ACLConfiguration Task ListConfiguring an IPv4 ACLTable 1-3 lists the IPv4 ACL configuration tasks.Table 1-3 IPv4 ACL configuration task listTask RemarksConfiguring a Time RangeOptionalA rule referencing a time range takeseffect only during the specified time range.Creating an IPv4 ACLRequiredThe category of the created ACL dependson the ACL number that you specify.Configuring a Rule for a Basic IPv4 ACLConfiguring a Rule for an Advanced IPv4 ACLConfiguring a Rule for an Ethernet Frame Header ACLRequiredComplete one of the three tasks accordingto the ACL category.
