3Com MSR 50, MSR 30 manual Example # Set the rule numbering step to 2 for ACL, 2101

2101

When defining rules in an IPv4 ACL, you do not necessarily assign them numbers. The system can do this automatically in steps. For example, if the default step applies, rules you created are automatically numbered 0, 5, 10, 15, and so on. One benefit of rule numbering step is that it allows you to insert new rules between existing ones as needed. For example, after creating four rules numbered 0, 5, 10, 15 in an ACL configured with the step of five, you can still insert a rule numbered 1.

Any step change can result in renumbering. For example, after you change the step in the above example from five to two, the rules are renumbered 0, 2, 4, 6, and 8.

Note that even if the current step is the default, performing the undo step command can still result in rule renumbering. Suppose that ACL 3001 adopts the default numbering step and contains two rules numbered 0 and 5. After you insert rule 1 and rule 3, the rules are numbered 0, 1, 3, and 5. If you perform the undo step command, they will be renumbered 0, 5, 10, and 15.

Example # Set the rule numbering step to 2 for ACL 2000.

<Sysname> system-view

[Sysname] acl number 2000

[Sysname-acl-basic-2000] step 2

# Set the rule numbering step to 2 for ACL 3000.

<Sysname> system-view

[Sysname] acl number 3000

[Sysname-acl-adv-3000] step 2

# Set the rule numbering step to 2 for ACL 4000.

<Sysname> system-view

[Sysname] acl number 4000

[Sysname-acl-ethernetframe-4000] step 2