Switches - Reflexive ACLs

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Jul 10th, 2007
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As I understand matters a reflexive (dynamic ACL) is one in which the 'outbound' traffic is defined in an ACE and the network device dynamically builds a return ACE for the returning traffic. If I am correct in my understanding then:-


Are there any layer 3 switches that support reflexive ACLs?


Grateful any guidance on this.

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royalblues Tue, 07/10/2007 - 12:14
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Yes pretty much the same but mostly used for traffic initiating from the inbound and allowing only the return traffic for the session from the outside.


Earlier we used to configure "established" parameter with our access-lists for these tyoe of behavior but it used to always look at TCP layer and above and hence never used to work with UDP, ICMP etc. reflexive ACLs however work well with these protocols.


The 6500 supports Reflexive ACLs.

use the feature navigator to see the platforms that support this

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp


HTH

Narayan

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