Reference Guide

Rules Resquencing
Rules After Resequencing: seq 5 permit any host 1.1.1.1
seq 10 permit any host 1.1.1.2
seq 15 permit any host 1.1.1.3
seq 20 permit any host 1.1.1.4
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}
The example shows the resequencing of an IPv4 access-list beginning with the number 2 and incrementing by 2.
Remarks and rules that originally have the same sequence number have the same sequence number after you apply the
resequence command.
Example of Resequencing ACLs When Remarks and Rules Have the Same Number
FTOS(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
FTOS# end
FTOS# resequence access-list ipv4 test 2 2
FTOS# 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,
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