Editing ACLs Using Sequence Numbers

Numbered ACLs have existed in IOS since the early days of Cisco routers and IOS. However, for many years, through many IOS versions, the ability to edit a numbered IP ACL was poor. For example, to simply delete a line from the ACL, the user had to delete the entire ACL and then reconfigure it.

Today, modern IOS versions allow CLI users to easily edit both numbered and named ACLs. Cisco first introduced these enhanced ACL editing features in named ACLs only, and slowly added them to numbered ACLs as well. This section examines these great ACL editing features that have been around in IOS since Version 12.3, which as of the writing of this book, is now a relatively old IOS version.

The ACL editing feature uses ...

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