RE: Basic Dielema....Acces-list or Prefix-List

From: James Matrisciano (jmatrisciano@kenttech.com)
Date: Fri Dec 02 2005 - 12:07:33 GMT-3

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Does anyone have a good link for a really good break down of
prefix-lists, I know I could use a refresher, as I am sure some others
could too.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Vincent Mashburn
Sent: Friday, December 02, 2005 9:27 AM
To: Bryant, Paul M; rosy bird; ccielab@groupstudy.com
Cc: swm@emanon.com
Subject: RE: Basic Dielema....Acces-list or Prefix-List

Prefix-lists are in fact more efficient. The IOS looks through
prefix-lists in a more efficient manner than ACL's. Also, Prefix-lists
allow you to edit or add to (delete from) any line without having to
take out the entire list (you can do it on the fly). My personal opinion
is to use prefix-lists in lieu of ACL's whenever possible.
Thanks
Vince Mashburn
Voice / Network Engineer
901-263-5072

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Bryant, Paul M
Sent: Friday, December 02, 2005 2:14 AM
To: 'rosy bird'; ccielab@groupstudy.com
Cc: swm@emanon.com
Subject: RE: Basic Dielema....Acces-list or Prefix-List

Hi Rosy

I have read that ACL should be avoid for route filtering as Prefix-list
are more efficent in the way that they are able to filter. For other
filter purposes obviously Prefix list are no good, i.e. port protocol
etc..

I am not sure how the efficency is achieved I guess it is the way in
which the memory is used can be simpler with a Prefix-list than an acl.
Probably
meaning it can be done in hardware. Perhaps one of the other members of
this group might know why they are more efficent in detail.

Thanks

Paul

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
rosy bird
Sent: 02 December 2005 07:52
To: ccielab@groupstudy.com
Cc: swm@emanon.com
Subject: Basic Dielema....Acces-list or Prefix-List

Just wanted to know which is the best practice..use of ACL or Prefix
list.Insituation where,using a prefix-list would not give any specific
advantage as such(unless specified of course)...is it ok to use Acls ??

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• Next in thread: hulbertj@comcast.net: "RE: Basic Dielema....Acces-list or Prefix-List"
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