how does the IOS interpret an ACL

From: Navid Daghighi (smart4D@free.fr)
Date: Wed Apr 02 2008 - 16:31:41 ART

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There is a very interesting article on
http://blog.internetworkexpert.com/2008/01/04/using-extended-access-lists-in-a-distribute-list/

It looks like there are 3 interpretations for an extended ACL :

A/ "normal" interpretation :
- source
- destination

B/ as a "prefix-list"
- address
- mask

C/ as a "who/what"
- who advertises this subnet
- what subnet is concerned

Interpretation B will be used in a route-map used :
- for redistribution betwen 2 IGPs
- for a "distribute-list ROUTE_MAP in" for BGP

Interpretation C will be used in a route-map used :
- for a "distribute-list ROUTE_MAP in" for an IGP

Is this correct ?

Thanks,
Navid

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