[[nsp] ACLs]
Rick Burts
rburts at netcraftsmen.net
Mon Mar 3 11:03:37 EST 2003
The one place I frequently see reordering is in standard access lists
where the IOS will move a host specific reference higher in the list
and other entries are added at the end as you would expect.
Rick
Brian Wallingford wrote:
>
> On Fri, 28 Feb 2003, Florian Weimer wrote:
>
> :Chris Davis <chris.davis at computerjobs.com> writes:
> :
> :> Isn't ACL optimization a feature of CiscoWorks? Unless I'm mistaken, your
> :> router should accept an ACL as pasted.
> :
> :On the bigger routers, the internal representation of ACLs is quite
> :different from the list you present to the router. Some translation
> :process is involved, and at least some optimization is usually part of
> :it.
>
> I can't imagine this optimization would include reordering. There's lots
> of fubar potential in doing such. ACLs can have drastically different
> results based on ordering.
>
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--
Rick Burts CCIE 4615 CCSI Email: rburts at netcraftsmen.net
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