IPv4 Access Control Lists (ACLs)

Editing an Existing ACL

Attaching a Remark to an ACE

A remark is numbered in the same way as an ACE, and uses the same sequence number as the ACE to which it refers. This operation requires that the remark for a given ACE be entered prior to entering the ACE itself.

Syntax: access-list < 1 - 99 100 - 199 > remark < remark-str>

This syntax appends a remark to the end of a numbered ACL and automatically assigns a sequence number to the remark. The next command entry should be the ACE to which the remark belongs. (The new ACE will automatically be numbered with the same sequence number as was used for the preceding remark.)

Syntax: ip access-list < standard extended > < name-str 1-99 100-199 > [ seq-#] remark < remark-str>

no < seq-#> remark

This syntax applies to both named and numbered ACLs. With­ out an optional sequence number, the remark is appended to the end of the list and automatically assigned a sequence number. When entered with an optional sequence number, the remark is inserted in the list according to the numeric prece­ dence of the sequence number. The no form of the command deletes the indicated remark, but does not affect the related ACE.

To associate a remark with a specific ACE, enter the remark first, and then enter the ACE.

–Entering a remark without a sequence number and then entering an ACE without a sequence number results in the two entries being automatically paired with the same sequence number and appended to the end of the current ACL.

–Entering a remark with a sequence number and then entering an ACE with the same sequence number results in the two entries being paired together and positioned in the list according to the sequence number they share.

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