Resequencing An Acl Or Prefix List - Dell S4048T Configuration Manual

Resequencing an ACL or Prefix List

Resequencing is available for IPv4 and IPv6 ACLs, prefix lists, and MAC ACLs.
To resequence an ACL or prefix list, use the following commands. You must specify the list name, starting
number, and increment when using these commands.
• IPv4, IPv6, or MAC ACL
EXEC mode
resequence access-list {ipv4 | ipv6 | mac} {access-list-name StartingSeqNum
Step-to-Increment}
• IPv4 or IPv6 prefix-list
EXEC mode
resequence prefix-list {ipv4 | ipv6} {prefix-list-name StartingSeqNum Step-to-
Increment}
Examples of Resequencing ACLs When Remarks and Rules Have the Same Number or Different Numbers
Remarks and rules that originally have the same sequence number have the same sequence number after you
apply the resequence command.
The example shows the resequencing of an IPv4 access-list beginning with the number 2 and incrementing
by 2.
Dell(config-ext-nacl)# show config
!
ip access-list extended test
remark 4 XYZ
remark 5 this remark corresponds to permit any host 1.1.1.1
seq 5 permit ip any host 1.1.1.1
remark 9 ABC
remark 10 this remark corresponds to permit ip any host 1.1.1.2
seq 10 permit ip any host 1.1.1.2
seq 15 permit ip any host 1.1.1.3
seq 20 permit ip any host 1.1.1.4
Dell# end
Dell# resequence access-list ipv4 test 2 2
Dell# show running-config acl
!
ip access-list extended test
remark 2 XYZ
remark 4 this remark corresponds to permit any host 1.1.1.1
seq 4 permit ip any host 1.1.1.1
remark 6 this remark has no corresponding rule
remark 8 this remark corresponds to permit ip any host 1.1.1.2
seq 8 permit ip any host 1.1.1.2
seq 10 permit ip any host 1.1.1.3
seq 12 permit ip any host 1.1.1.4
Remarks that do not have a corresponding rule are incremented as a rule. These two mechanisms allow
remarks to retain their original position in the list. The following example shows remark 10 corresponding to
rule 10 and as such, they have the same number before and after the command is entered. Remark 4 is
incremented as a rule, and all rules have retained their original positions.
Dell(config-ext-nacl)# show config
!
Access Control Lists (ACLs) 165