During routine maintenance, you may need to add rules to an ACL to meet new service requirements. If the default increment 5 is used, you can insert only four rules between neighboring rules (for example, rules 6, 7, 8, and 9 can be inserted between rules 5 and 10). To insert more than four rules between neighboring rules, increase the increment to a value greater than 6 so that the system reallocates IDs to the rules.
For details about the step, see ACL Increment.
Run the acl [ number ] acl-number [ match-order { auto | config } ] command to create a numbered ACL and enter the ACL view.
Run the acl name acl-name [ advance | basic | link | ucl | user | acl-number ] [ match-order { auto | config } ] command to create a named ACL and enter the ACL view.
By default, no ACL exists on the device.
The default increment is 5.