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Cisco Bug: CSCta04646 - Acl line unable to be removed due to less specific entry first

Last Modified

Feb 08, 2017

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

12.2(46)SG 12.2(46)SG1 12.2(50)SG 12.2(50)SG1 12.2(52)SG

Description (partial)


When creating an ACL on a Catalyst 4500 switch if you add a line before a previous entry that includes the later entries then you will be unable to remove the later lines from the ACL.  A reboot will clear this condition.  


Create an ACL like this:

Extended IP access list input_acl
    20 permit ip host host
    30 permit ip host host
    40 permit ip host host

Add the line:

   10 permit ip host any

Now you will be unable to remove lines 20-40.  If you remove line 10 then you will be able to remove lines 20-40.  Also reload will allow you to remove all lines.
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