Install Guide

The following example shows how to write a remark for an ACL rule:
Dell(config-ext-nacl)#ip access-list extended test
Dell(config-ext-nacl)# remark permit any ip
Dell(config-ext-nacl)# seq 10 permit ip any any
Dell(config-ext-nacl)#sh config
!
ip access-list extended test
remark 10 permit any ip
seq 10 permit ip any any
Deleting a Remark
To delete a remark, follow this procedure:
A standard IP ACL uses the source IP address as its match criterion.
● Use the no form of the following command:
CONFIG-EXT-NACL mode or CONFIG-STD-NACL
no remark [remark-number] [remark-text]
The remark number is optional.
The following is an example of removing a remark.
Dell(config)#ip access-list extended test
Dell(config-ext-nacl)# remark 10 permit any ip
Dell(config-ext-nacl)# seq 10 permit ip any any
Dell(config-ext-nacl)#sh config
!
ip access-list extended test
remark 10 permit any ip
seq 10 permit ip any any
Dell(config-ext-nacl)#no remark 10
Dell(config-ext-nacl)#show config
!
ip access-list extended test
seq 10 permit ip any any
ACL Resequencing
ACL resequencing allows you to re-number the rules and remarks in an access or prefix list.
The placement of rules within the list is critical because packets are matched against rules in sequential order. To order new
rules using the current numbering scheme, use resequencing whenever there is no opportunity.
For example, the following table contains some rules that are numbered in increments of 1. You cannot place new rules between
these packets, so apply resequencing to create numbering space, as shown in the second table. In the same example, apply
resequencing if more than two rules must be placed between rules 7 and 10.
You can resequence IPv4 and IPv6 ACLs, prefixes, and MAC ACLs. No CAM writes happen as a result of resequencing, so there
is no packet loss; the behavior is similar Hot-lock ACLs.
NOTE:
ACL resequencing does not affect the rules, remarks, or order in which they are applied. Resequencing merely
renumbers the rules so that you can place new rules within the list as needed.
Table 7. ACL Resequencing
Rules Resquencing
Rules Before Resequencing: seq 5 permit any host 1.1.1.1
seq 6 permit any host 1.1.1.2
seq 7 permit any host 1.1.1.3
seq 10 permit any host 1.1.1.4
126 Access Control Lists (ACLs)